Awesome web and mobile products for your business

Unlike most other firms, we take business needs first, making cutting-edge tech work for the goals of your company.

We are great at web and native mobile engineering. Good, efficient architecture is king. Your product should be scalable, maintainable and future-proof, and we'll make it happen.

One of our core values is design. As fans of all things simple, we create clean, in-your-face user interfaces even for the most sophisticated workflows.

We strongly believe in the lean methodology, which means we'll encourage you to spend as little money as possible for the first version of your product. Instead of making assumptions and allocating huge budgets upfront, we should quickly create an MVP for you, take it to the market, collect feedback and reiterate fast!

 
$5,000+
 
$25 - $49 / hr
 
10 - 49
 Founded
2015
Show all +
Minsk, Belarus
headquarters
other locations
  • Tehama
    San Francisco, CA 94105
    United States

Portfolio

Key clients: 
Since our founding in 2015, we've developed software for 40+ medium-sized businesses around the globe and Silicon Valley startups. Key clients: US National Association of Tax Professionals, Notion Digital, Famlicious Inc., DealStryker, Inc., OppSites.
BibleMania: Christian Trivia Image

BibleMania: Christian Trivia

Bible Mania is the fun, free Bible-themed trivia game that lets you test your knowledge of the Bible. BibleMania case study:https://yellow.systems/blog/trivia-game-development-how-we-created-a-tri...

7 pm Thursday: A Video-Centric Dating App Image

7 pm Thursday: A Video-Centric Dating App

A video-centric dating app where you are anonymous until you receive a call.

Famlicious: A Family Chat App Image

Famlicious: A Family Chat App

Famlicious is a family chat app with photo and timeline sharing that connects users with their families and provides a unique way of building family trees.


Famlicious case study:

https://yellow.systems/blog/how-we-created-famlicious-a-family-chat-app-...

HotelDataCloud: A Cloud Hotel Management System Image

HotelDataCloud: A Cloud Hotel Management System

A central database for hotels who want to be in control of their property descriptions.About HotelDataCloud: https://yellow.systems/blog/how-to-create-a-custom-hotel-management-soft...

Fireaway: A Single-Use Chat Image

Fireaway: A Single-Use Chat

Fireaway is the simplest chat.Create a single-use chat, invite others with a link. Close the browser tab, and the chat is gone.Website: https://fireaway.chat/

Travgenius: A Travel Fare Aggregator Website Image

Travgenius: A Travel Fare Aggregator Website

By integrating the most up-to-date databases and the most powerful APIs of the travel industry, Travgenius provides a way to book a hotel from over 450,000 properties worldwide, and for a price that is lower than what competitors offer.About Travgenius: https://yellow.systems/portfolio/travgenius

Telemojo: A Cloud-Based Contact Center Solution  Image

Telemojo: A Cloud-Based Contact Center Solution

Telemojo is an enterprise cloud-based text message contact center solution that makes issue resolution fast and customer service pleasant and effective.

Telemojo case study: https://yellow.systems/blog/how-we-developed-telemojo-a-cloud-based-cont...

StickerBox: Selfie AI Image

StickerBox: Selfie AI

StickerBox enables users to take pictures and create their own stickers.

Stickerbox case study:

https://yellow.systems/blog/stickerbox-episode-1-why-we-failed-when-we-t...

Separate.us: A Supportive DIY Divorce Solution Image

Separate.us: A Supportive DIY Divorce Solution

Divorce is hard. Separate.us makes it easier and helps to navigate divorce from start to finish.

Website: https://separate.us/

Racefully: A GPS Activity Tracker  Image

Racefully: A GPS Activity Tracker

Run with friends wherever they are. Just log onto the Racefully app, invite your friends, and run together virtually in real time, whether you’re on the other side of the city or the other side of the world.Website: http://raceful.lyCrunchbase:

Reviews

Sort by

CMS Development for Tax Professionals Association

"Their speed was much faster than we'd previously experienced."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$10,000 to $49,999
 
Apr. - Sept. 2019
Project summary: 

Yellow implemented a custom solution for a large nonprofit organization's new blog. They used Contentful CMS as a reusable content source and built the frontend display for blog content.

The Reviewer
 
51-200 Employees
 
Washington, DC
Jerry Sparkman
IT Director, National Association of Tax Professionals
 
Verified
The Review
Feedback summary: 

Browser compatibility and readability have increased markedly since the engagement began. Yellow's development process helped them beat deadlines and respond quickly to any technical concerns that arose. Their ability to bring creative ideas of their own to the table made them a valuable partner.

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there. 

I’m the IT director for the National Association of Tax Professionals. We exist to be the most reliable resource for gaining and developing professional tax expertise for about 23,000 members.

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with Yellow?

We needed to find a solution for some of our digital needs. In particular, this project was to create a blog. We struggled with knowing whether to go with a pre-existing system or to have a system built from scratch.

SOLUTION

What was the scope of their involvement?

Yellow helped us come up with a blended solution. They selected Contentful to be used behind the scenes as our CMS. It’s a flexible, headless CMS. Then they built the frontend display for the content of our blog. It serves as a reusable content source that can be distributed to other channels. In the future, we'll be able to add a mobile app or other microsites and be able to distribute that content from the central source. 

What is the team composition?

We mainly spoke with the project manager, but I know there was a team of several others working on our project. 

How did you come to work with Yellow? 

They came to us through a direct reference. One of our partners at a tax software startup introduced us to Yellow last year. Together we scoped out a couple of projects. This was the first one to try and get to know each other. 

How much have you invested with them?

We spent between $10,000–$15,000.

What is the status of this engagement? 

The project took place from April–September 2019.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

We're launching the finished product tomorrow. So far through our testing, we're able to see it's highly browser compatible. It's mobile compatible and it even works with Internet Explorer 11, which is a big deal. That’s a great win on the technical side. 

Yellow was able to incorporate Microdata, Schema.org, and Google AMP functionality. That helps with readability and makes it more distributable across the Internet. We also worked closely with our marketing team internally to achieve brand consistency. 

How did Yellow perform from a project management standpoint? 

Their team was very good and very fast. In fact, they were mostly waiting on us to get items to them. They took smart advantage of the time difference. If we sent over a question or an issue, we frequently would hear back the same day or the next day. We didn’t spend much time having to go back and forth on bugs or iterations. Yellow typically understood exactly what the issue was and came back with a fix right away. We were really pleased with their speed. 

What did you find most impressive about them? 

Their speed was much faster than we'd previously experienced. We're used to scoping everything out upfront and approving cost estimates before getting mockups and screenshots. Yellow starts by talking through conceptual design ideas and what we’re looking to accomplish for our business. We saw deliverables from them right away. What’s more is that, historically, other projects haven't been able to meet internal satisfaction here but this one did. 

Are there any areas they could improve? 

They could communicate the rapid development process better to new customers. There were times where we didn’t know how to flag problems. We weren’t sure if we should aggregate all bugs in one report or send them as they came up. Now that we know each other better, we’re more comfortable with their process. 

Do you have any advice for potential customers?

Be prepared to move quickly. Have the resources and capacity on your side allocated and ready to go.

5.0
Overall Score
  • 5.0 Scheduling
    ON TIME / DEADLINES
    They were faster than us.
  • 5.0 Cost
    Value / within estimates
    Price was more than reasonable for what we got.
  • 5.0 Quality
    Service & deliverables
    Deliverables are at least as good or better than what we’d hoped for.
  • 5.0 NPS
    Willing to refer
    I’d absolutely recommend them.

Web Dev for Vehicle Purchasing Platform

"So far, feedback about the product has been excellent."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
Less than $10,000
 
June - Aug. 2019
Project summary: 

Yellow used a MERN stack demo and existing UI/UX designs to develop an MVP for a vehicle purchasing platform. The product displays information about dealerships using the WebSocket protocol.

The Reviewer
 
1-10 Employees
 
Houston, Texas
Bradley J. Humble
Co-Founder & CTO, DealStryker, Inc.
 
Verified
The Review
Feedback summary: 

External stakeholders are pleased with the quality of the platform. Responsive and flexible, Yellow maintained open lines of communication and resolved issues quickly. Customers can expect an accessible and dedicated partner.

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

We connect car buyers with dealerships. We are in the early stages of an startup and needed a proof of concept. I am the CTO.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire Yellow?

We hired Yellow to help take our demo to a MVP. Prior we already had the UI/UX prepared. They worked off our designs and surpass our expectations.

What were your goals for this project?

To develop a proof of concept. We had a MERN stack demo that was built out with functionality.

SOLUTION

How did you select this vendor?

Was reaching out to a bunch of developing companies that were attending Collision 2019. I met Dasha and Dmitry there and they liked our concept, were in our budget as well as weren't focused on selling but rather asking about the platform we were wanting to build. I met with a lot of dev companies and they tend to be very pushy, while Yellow understood we were shopping around and was patient in that process.

Describe the project and the services they provided in detail.

The platform itself had to filter through dealerships to connect using a bunch of parameters as well as using web sockets to display them. They gave us a schedule of what would be built out, daily updates as well as fixed any issues quickly I or my team had.

What was the team composition?

We had the pleasure of working with Dasha, the head project manager, Dmitry, the lead developer as well as Alex the other developer. During the build process I spent most of my time communicating with Dasha about scheduling and with Dmitry about specifics regarding the tech development.

RESULTS & FEEDBACK

Can you share any information that demonstrates the impact that this project has had on your business?

My team has showed the MVP off to close family and friends but we are in the process of getting market feedback soon. So far, feedback about the product has been excellent.

How was project management arranged and how effective was it?

Yellow uses Agile, but prepared a schedule as well as daily updates regarding the project.

What did you find most impressive about this company?

They were very accessible regardless of the time difference as well as communication was good. We had a couple bumps here and there regarding designs that were not originally discussed in our UX/UI designs but they were quick to find solutions as well as any needed changes we requested.

Are there any areas for improvement?

I would recommend updating the dev schedules weekly. The original schedule we were provided was an estimate, which is fine, but was only updated for the invoices. Dmitry supplied his own per week near the end of the project which I liked but did not have the whole schedule for the project estimated, only the sprints. I would recommend a mixer of both or some routinely updated schedule to help my team understand the timelines better.

5.0
Overall Score Positive rating regarding their work, people and process.
  • 5.0 Scheduling
    ON TIME / DEADLINES
    Straight Forward and Finished a bit early.
  • 5.0 Cost
    Value / within estimates
    Reasonable and upfront about pricing.
  • 5.0 Quality
    Service & deliverables
    Amazzing Work.
  • 5.0 NPS
    Willing to refer
    Enjoyed working together and hope to do so again in the future.

Web Development for Design Studio

"They are able to solve problems quickly and they communicate extremely well."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$10,000 to $49,999
 
Feb. 2019 - Ongoing
Project summary: 

Yellow developed a website for a graphic design and creative agency. Their team is responsible for speed optimization, site updates, and bug fixes. 

The Reviewer
 
1-10 Employees
 
Boulder, Colorado
Founder/Creative Director, Design Studio
 
Verified
The Review
Feedback summary: 

Although the work is ongoing, the speed of the site has improved greatly. Yellow possesses the expertise and communication skills necessary to facilitate a smooth working relationship.

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

I am the founder of a design and creative agency. We provide design and user experience as well as campaign creative to a wide variety of clients.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire Yellow?

Yellow acts as our web development team, handling updates and new web functionality for our clients.

What were your goals for this project?

We were looking for a reliable and highly skilled partner that we could trust with the development side of the business.

SOLUTION

How did you select this vendor?

I looked at several vendors both local and abroad and found the Yellow was the most responsive and highly skilled. They were able to work in a number of different technologies and they are able to respond during our working hours even with the time difference.

Describe the project and the services they provided in detail.

Yellow has been able to tackle all of the projects I have given them. This has included speed optimization (increasing Google site speed by 10x), site updates and bug fixes, as well as new page development.

What was the team composition?

I work with a project manager and 2-3 developers depending on the project.

RESULTS & FEEDBACK

Can you share any information that demonstrates the impact that this project has had on your business?

The updates that Yellow has made have made the site more stable and efficient and in the case of the Google speed optimization, have increased site speed 10x, which will have a massive impact on user experience as well as SEO performance. They have greatly exceeded all expectations.

How was project management arranged and how effective was it?

Project management has been very efficient. Language has never been an issue and communication has been smooth, using Skype and email for project requests and continuous communication.

What did you find most impressive about this company?

I continue to be impressed with their technical skills and responsiveness. They are able to solve problems quickly and they communicate extremely well. I can also tell that they really care about our partnership.

Are there any areas for improvement?

I can't think of anything they need to improve.

5.0
Overall Score Yellow is a great agency and I highly recommend them.
  • 5.0 Scheduling
    ON TIME / DEADLINES
    Scheduling is always clear and easy to do.
  • 5.0 Cost
    Value / within estimates
    Their rates are great considering the high quality.
  • 5.0 Quality
    Service & deliverables
    Their work is always top notch.
  • 5.0 NPS
    Willing to refer
    I would highly recommend Yellow.

Multiple Dev & Design Projects for Security Company

"The most precious resource we have is time, and they help us achieve better results faster."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$50,000 to $199,999
 
2016 - Ongoing
Project summary: 

Yellow augments an internal development team, performing web development and design projects. Their services have included frontend programming. 

The Reviewer
 
51-200 Employees
 
New Hampshire
VP Operations, Cybersecurity Company
 
Verified
The Review
Feedback summary: 

Ever since Yellow enhanced the UX of a website, the number of daily users has increased. They are an organized group with a proactive method of planning projects. Their professionalism and accessibility have been strengths throughout the partnership. Customers can expect a flexible team.

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there.

I’m the VP of operations at a security company in the identity and access management space that provides solutions for securely storing and transmitting data.

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with Yellow?

We bring on Yellow when we’re short on resources, or if we have an urgent project we need to complete quickly. 

SOLUTION

What was the scope of their involvement?

They've been helping us with our internal projects for over three years. These services have included web development and design. For example, we hired Yellow to redesign our website with a focus on the UX, and that work has included frontend programming. They also created a portal for us in the past.

The workflow has consisted of giving Yellow our tasks and then receiving a developed solution in return, which we test and put into production. They can also implement the code themselves if needed.

What is the team composition?

Our main contact point with Yellow is a project manager. I coordinate the projects, and Yellow works with our development team.

How did you come to work with Yellow?

I met their CEO at a tech event in Boston. He described their services, and we discussed about a unique project they were working on. 

Later, we contacted them when we were experiencing a resource shortage while changing the overall look and flow of our website. Out of all the quotes and project timelines we received, their services were the best combination of price and quality. It appeared they could meet our requirements.

How much have you invested with them?

We’ve invested between $50,000 and $200,000 with the team during the time we worked together.

What is the status of this engagement?

We started our first project together in 2016 and the partnership is ongoing.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

The most precious resource we have is time, and help us achieve better results faster. When they helped us redesign our website with a focus on the UX, our customers' database started growing much faster. Customer retention rate also increased.

How did Yellow perform from a project management standpoint?

Our communication with the team has been extremely efficient and reliable. We give them straightforward tasks, and they come back with solutions that require only a few reviews. If they have questions, they always ask. Yellow is flexible to our needs and has a proactive planning method. We always have realistic estimates of the number of resources required before a project begins.

Sometimes we’re jealous that we can’t organize ourselves as well as they do. They have never failed to deliver results on time and on budget.

What did you find most impressive about them?

They are a personable, professional team that’s invested in satisfying client needs. Team members are extremely accessible and responsive. Their work is always a success, and that’s why we keep coming back to them.

Are there any areas they could improve?

I’m happy with the team’s work, and I can’t think of anything I would want them to improve.

Do you have any advice for potential customers?

No, I don’t have any advice.

5.0
Overall Score It’s been one of my most pleasant working experiences.
  • 5.0 Scheduling
    ON TIME / DEADLINES
  • 5.0 Cost
    Value / within estimates
    They aren’t cheap, but they are competitively priced and provide great value for the money.
  • 5.0 Quality
    Service & deliverables
  • 5.0 NPS
    Willing to refer
    I’ve already recommended them a couple of times.

Web Optimization for Real Estate Marketplace

"We presented a complicated tech stack, and they’ve been doing a great job."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$50,000 to $199,999
 
Dec. 2018 - Ongoing
Project summary: 

Yellow optimizes a legacy web-based platform by building new features, enhancing performance, and fixing bugs.

The Reviewer
 
1-10 Employees
 
San Francisco Bay Area, California
Ian Ross
CEO, OppSites
 
Verified
The Review
Feedback summary: 

The new features have been well received by users. Attentive and flexible, the team excelled at responding to stakeholders in a timely matter. Their technical expertise allows them to propose valuable solutions.
 

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there.

I’m the CEO and founder of OppSites. We’re an online app with a project marketplace for investment opportunities in business and real estate. The application also has a member network with thousands of users where they can discover real estate opportunities and connect with each other. 

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with Yellow?

We wanted to enhance a legacy web application. Our contracted engineer recommended that we get additional support to accomplish our goals on schedule. Since he was departing the company soon, he wanted to ensure there would be a development team in place.

SOLUTION

What was the scope of their involvement?

Yellow has been renewing an existing web application by improving existing features and adding new functionalities. They also fix bugs and optimize platform performance. Currently, the team is building an administrative feature for our management team so we can analyze platform activity.

They’ve helped design frontend features, but most of their work has been optimizing our app through backend development. Technologies used include Ruby on Rails, React, and a PostScript database. 

What is the team composition?

Their team consists of a manager, one coder, and a developer.

How did you come to work with Yellow?

Our engineer knew Mitya (Founder, Yellow) and recommended the team to us. 

How much have you invested with them?

We’ve invested between $50,000 and $100,000 with the team.

What is the status of this engagement?

We started working together in December 2018 and the project is ongoing.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

New features they built are being utilized and positively received by users. For example, they built an online forum and email notification tools, and these features have been successful. 

How did Yellow perform from a project management standpoint?

We had a lot of legacy technology that wasn’t optimized—it wasn’t an easy project. Yellow has done an exceptional job at figuring out the jobs we’ve presented them with. They’re great at collaborating with us to understand project goals.

What did you find most impressive about them?

The management at Yellow has been very attentive. They respond immediately, and communications are structured according to our schedule and time zone. If we have an urgent issue, someone always addresses the issue in a timely matter.

Are there any areas they could improve?

Nothing comes to mind that they could do better. We presented a complicated tech stack, and they’ve been doing a great job. 

Do you have any advice for potential customers?

Future clients should leverage Yellow’s technological expertise by letting them propose a solution instead of prescribing what the team should build. Empowering Yellow with a detailed understanding of business development goals will allow them to ideate the optimal solution.

5.0
Overall Score They've been very attentive.
  • 5.0 Scheduling
    ON TIME / DEADLINES
  • 5.0 Cost
    Value / within estimates
  • 5.0 Quality
    Service & deliverables
  • 5.0 NPS
    Willing to refer

iOS & Android App Dev for Faith-based App Developer

"The team’s communication skills and collaborative approach stood out."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$200,000 to $999,999
 
Aug. - Dec. 2018
Project summary: 

Yellow built a mobile application for iOS and Android. The team continues to release post-launch feature enhancements.

The Reviewer
 
1-10 Employees
 
New York
Executive, Faith-based App Developer
 
Verified
The Review
Feedback summary: 

Proactive and communicative, Yellow was a strong development partner with adept project management skills.

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there.          

I founded a company that makes Christian-inspired applications.

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with Yellow?

We hired Yellow to build a mobile application efficiently and in a cost-effective manner. They needed to understand our goals and specifications.

SOLUTION

What was the scope of their involvement?

Yellow developed and launched a mobile app for iOS and Android. They provided front- and backend development services, but not design. The app is now launched and we continue to do new releases every 2–3 weeks as we focus on enhancements.

What is the team composition?

We worked with a backend developer, a project manager, and separate iOS and Android development resources.

How did you come to work with Yellow?

We met Yellow at a trade show. The team was knowledgeable and understood our requirements. Yellow also talked us through everything we needed, which was helpful.

How much have you invested with them?

We spent between $100,000–$250,000.

What is the status of this engagement?

We worked with them from August–December 2018.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

It’s too early to have hard data, but the app is promising.

How did Yellow perform from a project management standpoint?

The team had a proactive approach to development and enhancements. We communicated via Jira, Slack, phone calls, and Skype.

What did you find most impressive about them?

The team’s communication skills and collaborative approach stood out. They were highly diligent, always looping in their senior leadership on pressing issues.

Are there any areas they could improve?

I’ve gotten positive feedback from my internal team. Consequently, I would only have minor constructive feedback for them.

Do you have any advice for potential customers?

Clients should understand what the requirements need to be and what Yellow will execute those.

5.0
Overall Score
  • 5.0 Scheduling
    ON TIME / DEADLINES
  • 5.0 Cost
    Value / within estimates
  • 5.0 Quality
    Service & deliverables
  • 5.0 NPS
    Willing to refer

Web App Dev for Hotel Reservation Management Company

“They’ve had a positive impact on our company and project, providing valuable input and feedback.”

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$200,000 to $999,999
 
2016 - 2017
Project summary: 

Yellow provided full-service dev, working on the frontend, backend, and databases. They launched the MVP and are now working on updates and feature enhancements to the web app.

The Reviewer
 
11-50 Employees
 
United Arab Emirates
Executive, Hotel Reservation Management Company
 
Verified
The Review
Feedback summary: 

Yellow was responsive and communicative, maintaining constant contact throughout the engagement. Unlike other firms, they’re proactive and dedicated to the project's success, working hard to find the best solutions possible.

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there.

I’m the co-founder of a B2B hotel reservation management company. We do description content distribution, meaning we make sure that the hotels’ descriptions of amenities and offerings are correctly displayed across all departments and third-party booking websites.

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with Yellow?

We needed a full-tech solution for our software, which included frontend, backend, and connections to our other systems.

SOLUTION

What was the scope of their involvement?

Yellow provided recommendations for how to set up our whole platform, acting as our outsourced CTO. They used Node.js for the frontend, Ruby on Rails for the backend, and Firebase and SQL for two of our databases. The platform is a senior page application (SPA) for desktop, and we currently don’t have any mobile versions of the web app yet. We launched the first version, and Yellow has been working on new iterations, updates, and enhancements.

What is the team composition? 

They provided three full-time developers and a project manager.

How did you come to work with Yellow?

I’d worked with them previously and had a good experience, so I hired them again.

How much have you invested with them?

We spent about $200,000.

What is the status of this engagement?

We partnered in 2016, and we launched the first minimum viable product (MVP) in 2017. Since then, we’ve been working on expanding the app’s functionality.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

They’ve taken the burden off our shoulders of having to develop these solutions by ourselves. They’ve had a positive impact on our company and project, providing valuable input and feedback.

How did Yellow perform from a project management standpoint?

They were responsive and available whenever we needed them. We mainly communicated with the project manager via Slack and Jira, but we could contact the developers directly if needed.

What did you find most impressive about them?

They’re responsive and have creative problem-solving skills. I’ve worked with other firms, and Yellow is much more proactive, taking the initiative to find the best solutions possible.

Are there any areas they could improve?

 No, we're happy with them. 

Do you have any advice for future clients of theirs?

Have clear communication and be as specific as possible with your requirements and feedback. Answer their questions and don’t leave any room for misinterpretations.

5.0
Overall Score
  • 5.0 Scheduling
    ON TIME / DEADLINES
  • 5.0 Cost
    Value / within estimates
  • 5.0 Quality
    Service & deliverables
  • 5.0 NPS
    Willing to refer
    I'd absolutely recommend them.

Interactive Video App for App Development Company

"Yellow’s methods can’t be replicated. They truly stand out."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$10,000 to $49,999
 
July 2018 - Ongoing
Project summary: 

In addition to developing a cloud-based Elastic web platform that utilizes multiple programming languages, Yellow made upgrades to an iOS application that was mishandled by a previous developer.

The Reviewer
 
1-10 Employees
 
San Francisco, California
CTO, Education App Development Company
 
Verified
The Review
Feedback summary: 

The application was successfully repaired and ushered into the App Store, and the platform was delivered ahead of schedule and under budget. Yellow exhibited a commendable customer service approach and a willingness to work at an appropriate startup pace.

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

I'm the CTO for an app company. Our team is comprised of academics with a heavy focus on research. We have deployed several applications with large universities in the United States, Canada, and the MENA region.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire Yellow?

Following a previous developer’s shortcomings in upgrading one of our applications and adhering to deadlines, we were in search of a partner that better understood our problems and was more suited to guide us through the development of our next applications.

What were your goals for this project?

The app in question was broken and was not going to scale well. We needed to correct its issues and get the app to market as soon as possible. Additionally, we needed to plan for the next steps to create an Elastic web platform that will take us through the next few years of growth.

SOLUTION

How did you select this vendor?

Their head of business development contacted me ahead of our attendance at a specific conference. After meeting at that conference, I was impressed with their ability to understand our problems. They also exhibited a strong desire to work with us. I was not familiar with Eastern Europe as a market for developers, but my concerns were addressed during that meeting.

Can you go into detail about the services they provided and the scope of the project?

They helped us with the .NET repairs and Objective-C fixes within the app. Once those were complete, we pushed the iOS app to the App Store.

The next task was to create an MVP of the web platform. They ensured that the AWS stack was appropriate and scalable. This stack included CloudFront, CloudFormation, Virtual Private Cloud, Elastic Compute Cloud, Simple Cloud Storage Service, Identity and Access Management, Lambda, DynamoDB, a custom API and various subnets. The project migrated from an SQL Server to Aurora MySQL, and they implemented Continuous Integration/Continuous Delivery with a testing farm.

What was the team composition?

We ended up using a variable team for the different tasks, and we relied on different project managers for each.

RESULTS & FEEDBACK

Can you share any information that demonstrates the impact that this project has had on your business?

We trusted them to use their team as needed, and they delivered products on time, under budget, and of a higher quality than we expected.

How was project management arranged and how effective was it?

I can’t overstate how pleased I am with their project management. It was more effective than any other project I’ve worked on in the past decade. I can generally be a demanding client, but they easily exceeded my standards.

What did you find most impressive about this company?

As a startup, we operate differently and with a smaller budget than a Fortune 500 company. Still, they were able to work at our pace. Yellow’s methods can’t be replicated. They truly stand out.

Are there any areas where they can improve?

No, I sleep better with them on my team. They were comfortable using our tools and our stack. They needed no micromanagement.

5.0
Overall Score If I could, I would attempt to retain them exclusively for my projects.
  • 5.0 Scheduling
    ON TIME / DEADLINES
    They're incredibly flexible.
  • 5.0 Cost
    Value / within estimates
    I don't have any concerns about their cost.
  • 5.0 Quality
    Service & deliverables
    I very rarely have questions regarding their work. They always get it right.
  • 5.0 NPS
    Willing to refer
    I will definitely recommend them.

iPhone App Dev for Social Fitness Platform

"If you are looking for a partner to collaborate with for the development process, I would consider hiring Yellow."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$50,000 to $199,999
 
2015 - Summer 2016
Project summary: 

Yellow helped create an iPhone app that allows users to track physical activity. The provided support for quality assurance as well.

The Reviewer
 
1-10 Employees
 
London, United Kingdom
Chris Pointon
CTO, Racefully
 
Verified
The Review
Feedback summary: 

Yellow has an intelligent team of developers that collaborated on the project to build a quality app. They follow instructions seamlessly, respond effectively to feedback, and invest themselves in the overall success of the product.

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there.

I am the founder and CTO of Racefully, a social activity-tracking platform.

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with Yellow?

We wanted to bring the app to market as quickly as possible, but with multiple activity trackers on the market, it needed to be fully-featured. We decided to engage an external company to give us the development capacity to meet our launch target and respond quickly to market feedback after launch.

SOLUTION

What was the scope of their involvement?

Yellow collaborated with our in-house developers and UX designer to develop an iPhone app. It was not a fully outsourced project, essentially we hired Yellow to help develop the app and implement the design. They incorporated our in-house team into theirs to build the front and backend of the app. Yellow's primary responsibilities also included quality assurance.

What is the team composition?

We worked with two developers and a QA person from Yellow. Two employees from my team managed the project and I worked with them when necessary.

How did you come to work with Yellow?

Our UX designer previously worked with the Yellow team and he introduced us. We met and talked to them about the design we had in progress.

How much have you invested with them?

We spent about $150,000 with them in a little over a year.

What is the status of this engagement?

We worked with their team at the end of 2015 and our app launched the following summer in 2016.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

In the year after we completed the project, Yellow was instrumental in responding to user feedback and fixing any bugs that came up since the launch.

How did Yellow perform from a project management standpoint?

I was the overall project manager for both teams. They worked well within the parameters of the instructions we gave them. Their team took feedback well and responded to the testing process in the best way possible.

What did you find most impressive about them?

Their team was very smart and knew the platforms are working with. They engaged with us as team members rather than an external company and we sensed that they were invested in the quality of the product. Additionally, their participation in code reviews was very positive and their team aimed at making sure that everybody's output was the best possible quality.

Are there any areas they could improve?

I found Yellow to be a very effective development partner. I would happily use them again if we needed developing services. We are pleased with the engagement and don't have any negative feedback for them.

Do you have any advice for future clients of theirs?

If you are looking for a partner to collaborate with for the development process, I would consider hiring Yellow. I can't speak to how they perform on projects that are completely outsourced.

5.0
Overall Score
  • 5.0 Scheduling
    ON TIME / DEADLINES
  • 5.0 Cost
    Value / within estimates
  • 5.0 Quality
    Service & deliverables
  • 5.0 NPS
    Willing to refer

Web App Development for Client Management Platform

“Yellow is by far the best at helping us make decisions to push our company forward.”

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$50,000 to $199,999
 
May 2016 - Ongoing
Project summary: 

Having finished development of a Rails app, Yellow now continues to implement new features. With several third-party integrations and a customer portal, the app boasts strict IRS-compliant security components.

The Reviewer
 
1-10 Employees
 
Irvine, California
William Hamilton
Co-Founder, SmartCenter
 
Verified
The Review
Feedback summary: 

Users continuously provide positive feedback on the app’s usability and performance, while a third-party review also provided insight into Yellow’s technical aptitude. Pronounced dedication bolsters their already-tailored project management. A genuine approach distinguishes them from competitors.

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there.

I’m the co-founder of SmartCenter, an intelligent practice management solution for small tax and accounting firms. I do everything I can to help our company grow.

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with Yellow?

We needed an adept team to step in and work alongside us as our technical partner to develop a product.

SOLUTION

What was the scope of their involvement?

They came in to replace a team we were working with previously on the product. This required them to work on a code base that they didn’t start, but they managed to jumped right in and take the product where it needed to go.

They’ve taken the mobile responsive Ruby on Rails application from a minimum viable product (MVP) stage to a fully functioning app. They’ve implemented some login and security features, as well as developed our client collaboration portal. It’s a unique document sharing portal that meets IRS requirements for our industry regarding personal data (e.g., social security numbers, year-end numbers). The portal is a leader in the industry because it integrates real-time chat features with secure document sharing.

They’ve also helped us integrate the app with Microsoft Outlook, 365 Exchange, Gmail, QuickBooks, and Zero.

What is the team composition?

My initial point of contact was one of their founders, but that moved over to the project manager once development started. There have also been two frontend and two backend developers.

How did you come to work with Yellow?

I’d heard about them through a personal connection in the Bay Area. We chose them because we felt really comfortable with their efficiency and ability to finish the work in the timeframe we needed. Their price model was also aligned with our objectives.

How much have you invested with them?

We spent approximately $150,000.

What is the status of this engagement?

We started working together in May 2016 and the relationship is ongoing as we continue to build out new features.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

Users often comment on the app’s simplicity and seamless functionality. Many apps in the B2B sphere are outdated and inaccessible. They may have complex functionality, but they don’t feel good to use. Yellow worked with us to build an app that is both functional and easy for the user. A potential venture capitalist partner did a code review and said that it was the cleanest they’d ever seen.

How did Yellow perform from a project management standpoint?

We use Slack and Pivotal. I’m very pleased with the project manager. We’ve worked with four development teams over the life of our business, but Yellow is by far the best at helping us make decisions to push our company forward. They don’t just take requirements and start coding, but instead go to a much deeper level of understanding what we’re trying to do. They work with us to develop our vision in a unique way. They translate our goals into their project management on a daily basis, which is something they’ve done really well.

What did you find most impressive about them?

There are a lot of development teams out there that can produce clean code, but the majority of them don’t really care. Yellow stands out because they’re invested in the results and clients. If the team doesn’t truly care about the product, then it will show in the end result. Every single person on Yellow’s team genuinely cares about what they’re doing. I really appreciate that about them and it’s the main reason we will continue our relationship for as long as possible.

Are there any areas they could improve?

I’ve had a great experience from day one. I couldn’t be happier with their team and we haven’t had any issues.

Do you have any advice for potential customers?

There are certain things you have to take care of on your own before you bring in a team, but you don’t necessarily have to do that with Yellow. Their onboarding process and approach allow both parties to really figure out how to handle the project to end up with the best results. If you follow their process and trust that they want to help, then that’s a really good start.

5.0
Overall Score We’ve worked with multiple teams worldwide and Yellow has been the best so far. We’ll use them as our go-to developers for as long as we can.
  • 5.0 Scheduling
    ON TIME / DEADLINES
    They always set reasonable expectations for timing and stay in communication with us throughout deadline periods. We haven’t missed any deadlines.
  • 5.0 Cost
    Value / within estimates
    We’ve received far more value for their development than we’ve spent over the last ten years.
  • 5.0 Quality
    Service & deliverables
    Our code was listed in the top 10% of categories we were reviewed in.
  • 5.0 NPS
    Willing to refer
    I’ve actually referred them to other multi-million dollar enterprises who were looking for outside developers.