Top App Developers in New York City

Mobile App Development for Payment Platform

The engagement model of Fueled is great. Fueled project manager worked closely with our product and project managers to create a detailed plan for execution. We followed agile methodology and delivered functionality inclemently via sprints. We had daily and weekly check-ins to keep the project on-track. We also had slack channel that really helped with collaboration.

Beacon App Development for Verizon Wireless

The partnership with Fueled was a real collaborative effort. They were patient in terms of working with us and understanding we had some strong ideas about the vision in terms of what we wanted. They were a really strong partner in terms of helping us go back and forth on the drawing board, and boiling down what we were trying to do and then making sure it was the simplest, easiest way a customer could go about doing it.

Mobile App Dev & Application Testing for Software Company

The pace and quality of the work exceeded our expectations. The Konstant Infosolutions team members have integrated well with our team. We were very impressed with how quickly they picked up on the business use cases.

Mobile App Dev & Design for Software Company

The ability to continue working on a specific feature or aspect until it has been done to its completion and of high quality. Vibhuti is the project lead for my application, and she does an excellent job of communicating my needs to the development team. Vibhuti is communicative, professional, and polite, as she continues to make my project to the highest-quality degree possible.

Client & Admin Portals for Revenue Intelligence Platform

They constantly go above and beyond the scope of the project specs and strive to deliver the highest quality work for their clients, which was a rare experience for us in this kind of setting. It was more than a few occasions that we found ourselves pleasantly surprised by the features they put in that we did not explicitly specify in the scope doc.

Web Dev for Startup

The work is to a high standard and very professional. The team was very good, and we were happy working with them.

Web & Mobile App Dev for E-Learning Company

Meanwhile India were in critical of the Covid-19 issue during of the development but Konstant kept 100% the quality of work. Konstant is not only an agency or a company. really, it is a best partner for IT solution projects.

Scalable Solution Dev for Travel Technology Company

Euvic does an exceptional job meeting their commitments. They work collaboratively with us to help us achieve our goals. Throughout the course of our engagement with Euvic, the team has consistently met or exceed our expectations and deliverable needs. The team at Euvic has become an integral part of our team. Their resources act like they are our employees and consistently help us improve our software development. The management team at Euvic is committed to keeping their customers happy and do this by being transparent with you.

Infrastructure & Network Device Mgmt for Roofing Company

I’m very happy with the communication and collaboration between our teams. They operate as though they were our own employees, and it’s difficult to recognize that they’re from a different company. We’ve implemented some changes in our model from an IT perspective. I was in direct communication with their team from the beginning.

Custom Software Dev Services for City Hall

Compared to the commercial sector, it’s not that easy to run a project with a local government, but we did it. There was a very strong collaboration between us and Euvic. The project was done on time and within budget, and we completed the initial scope. We contact them on a case-by-case basis now, if there’s an issue to be resolved.

Web Dev for Large Cosmetics Company

They're very knowledgeable about the most relevant industry standards.

Web Development for Funding Company

Super communicative and timely. They took a complex concept, learned about it very quickly, and implemented the vision perfectly.

Web App Dev & Tech Support for Home Services Company

Thoughtbot was always extremely professional. They routinely delivered work on time and with a high degree of quality. When complications did arise, they were quick to communicate the issue to key stakeholders so that timelines or scope could be adjusted appropriately.

Mobile App Development for Food Waste Software Company

We were able to hit our internal timeline targets with the help of the thoughtbot team, which were imperative in order to deliver the product to our customers on time. The thoughtbot team was exceptional in their ability to deliver on time and communicate with us during the process. We had biweekly retros to improve our working relationship which was extremely helpful.

Custom Software Dev for Congressional Software Company

Thoughtbot was extremely organized and communicated on a reliable cadence with progress, issues, and timelines within the multiple projects with our company. All projects were delivered on time or early. Thoughtbot has always and continues to be extremely responsive to all of our needs and requests.

AI Solution Prototype Development for Software Company

How did thoughtbot perform from a project management standpoint?

 thoughtbot delivered on time, went above and beyond, and was extremely cost-effective. They collapsed time for me by making my product in a sprint setting so I could see the next steps. I was able to pivot and simplify thanks to this sprint. We communicated via Slack.

UI/UX Design Services for Healthcare Company

From meeting introduction through the delivery of a prototype, the Perpetual team ensured all items were shared on time, and the team is extremely adaptable to changing company timelines. It has been great to work with an understanding and professional team. The team has been adaptable to our changing timeline and organizational changes. No improvements can be suggested at this time.

Web & Mobile App Dev for Grocery Delivery E-Commerce Co

Everybody we’ve worked with has improved their understanding of our product, so they've consistently suggested improvements that we haven’t considered. In particular, our QA analyst started as a junior, but now she does an outstanding job running the show, developing test plans, and working autonomously.

Mobile App & Web Dev & UX/UI Design for Fintech Company

Simform has demonstrated excellent project management throughout our engagement. We were assigned a dedicated project manager who has been proactive, organized, and highly responsive to our evolving needs. Deliverables have been consistently on time, with clear visibility into timelines and progress. The team is highly responsive — often replying within minutes — and they’ve been quick to implement feedback or pivot when priorities shift. Their structured yet flexible approach has been critical in helping us stay on track while building and iterating on a complex fintech platform.

Mobile App & Web Dev & UX/UI Design for Fintech Company

What stood out most about Simform is their unrelenting drive to adapt and overcome any challenge we threw at them. Whether it was shifting priorities, tight deadlines, or new technical requirements, the team consistently found solutions without hesitation. Their work ethic is outstanding — they’re always professional, punctual, and polite. Every interaction, whether over Slack, email, or video calls, reflects a high standard of communication and dedication.

Mobile App & Web Dev & UX/UI Design for Fintech Company

At this stage, we don’t have any significant areas for improvement to note. The Simform team has been consistently responsive, adaptable, and thorough across all phases of the project.

Custom Software Dev for Annuities Servicing Co

Adaptable to anything we need. Aligns expectations with reality!

Create Digital Tools for Communication Platform for Parents

Their team is incredibly flexible in the ways in which they work with their clients. I’m personally a very hands-on founder, so I like to handle project management on my side of the engagement, and I really appreciate their willingness to let me interact directly with the developers and other individuals we need when we need them. They have been extremely adaptable to our workflow throughout the project so far.

Design & Product Improvement for Healthcare Marketplace

They were very engaging and proactively listening for feedbacks and improve ways of working. They are very honest and constructive and provided invaluable feedback to us as well.

Mobile App Dev for Nursing Corporation

Valery constantly brings things to my attention, as he's very forthcoming whenever there's a concern. Moreover, he's very professional. Initially, he didn't want to step on my toes, as I was the CEO. However, I told him that I didn't know what I was doing and to please be my eyes and ears on this project to tell me if I was missing something.

Web Dev for Decentralized Creative Agency

One of the most remarkable achievements following the launch of our new website has been a substantial 35% increase in leads. This surge is a direct testament to the effectiveness of the website's design and its ability to attract and engage potential clients. The new website has played a critical role in not just attracting business and talent but also in reinforcing our reputation as a leading creative agency.

Mobile App Development for Sports Fan Platform

We built an app that has a very smooth navigation, clean interface, and well-functioning technology. Blue Label did an excellent job. The testing cycle was very easy as well. We were able to go back and forth with questions and suggestions for our project manager on a daily basis.

AI Dev for Manufacturing Company

Connected and indexed 40+ years of ERP and operational data, making it searchable in seconds instead of requiring multi-system navigation. Unified historical records spanning ~390,000 orders, ~9,400 clients, and ~3,700 products, giving teams immediate context during quoting and support. Cut expert lookup time by about 75% for core workflows like order tracking and status checks, freeing senior staff for complex cases and coaching.

Development for Student Life Platform

The initial prototype we produced was key in securing our first investment, which prompted us to go back to them for full-scale development. They've been excellent in strategizing our business changes. From a UX/UI perspective, the product they’ve created is top-notch, and working with them has been amazing.

AI Strategy & Design for Storytelling & Innovation Company

The entire team we worked with was very impressive, and we appreciated what they brought to the table. They were very accommodating for what we needed in each circumstance and always ensured that we had what we needed to move quickly and complete tasks. We were also impressed with the level of support that BlueLabel provided and their ability to push the product and the vision through consistently.

Prototype Design for Procurement Platform

Their team has been professional throughout the process, displaying creativity and expertise. Tanya was exceptional in taking my idea and turning it into a working prototype. Danny created a beautiful landscape and visual presentation of the product. Kelly, our project manager, did an excellent job keeping everybody on task.

Android Development for Social Media Startup

They really know Android and the Ukraine and Russian markets. This project was highly successful because we profited a lot and still remain close friends with the Cleveroad team. It would have been better if they anticipated changes in the Android system more.

Android App Dev for Independent Media Company

I got the sense that they were very dedicated to the success of the project, and their actions bore that out. I feel like I have a team of knowledgeable folks in my corner.

Mobile App Development for Pizzeria

Their deep knowledge and broad experience helped turn my idea into reality. After speaking with their sales manager, I decided to hire this particular company. He carefully listened to me, elaborated on the details, and made some good suggestions.

Mobile App Dev for Education Startup

Their team are very knowledgeable and always give honest feedback when we request to implement additional features.

Low/No Code Development for Fitness Company

Daniel developed systems and automations for us that wonderfully improved the customer experience, reduced the burden of repetitive actions for me, and turned manual processes into systems that work smoothly. The amount of glitches she solved for me in the business and the order she brought behind the scenes - is simply exceptional. Her availability, caring, professionalism, efficiency, and meeting of deadlines are rare and highly appreciated. She knows how to take an idea, a need, or a glitch - and tailor a smart, fast, and user-friendly solution around them, while taking all the hassle and headaches off you.

CRM Dev & Web Redesign for Recruitment Firm

They have great technical knowledge and the entire experience was very smooth. Initially I had to only share my requirements. After that, they took care of everything.

Web Dev, Design, Hosting & Maintenance for Nonprofit Org

We have very good communication with Five Jars, so we’ve been able to stay connected on the project; their team has spent a lot of time listening to our needs. Additionally, they’re great from a budgetary perspective, and they set clear expectations. For example, they tell us if something is within or outside the scope before we start any project.

Web Development for Nonprofit Organization

The Five Jars team is thoughtful, resourceful, and open to feedback and input. They work to ensure they understand the use cases and deliver a product that meets their clients' needs. What I value most is their insightful feedback and suggestions.

Branding, Digital Strategy & Mobile App Dev for Cannabis Co

Osmos demonstrated exceptional project management throughout their engagement with X-Shack. They consistently delivered assets on time and often ahead of schedule, showing a strong commitment to deadlines and clear communication. Their team was highly responsive, proactive, and attentive to our evolving needs—quickly adapting to feedback and providing thoughtful solutions without delay. Osmos maintained a professional yet collaborative dynamic, making the entire process feel smooth and efficient.

AI Development for Technology Solutions Company

The project showed clear, early traction across user engagement, system performance, and real-world impact. Rapid User Adoption within the first 10 days of launch, with ~2,500 users actively engaging with the system, indicated strong initial demand and low barriers to entry. The platform handled thousands of concurrent user interactions during the initial rollout without major failures, indicating strong technical architecture and readiness for scale. The system successfully transitioned from a small pilot to a large-scale deployment within a short timeframe, maintaining performance and usability.

Website Redesign for No-Code CX Automation Platform

They have a great website design knowledge. We appreciate that they were patient and thoughtful while we came up with some revisions. Overall, it was a very collaborative and positive experience working with this team.

Web Development for Funeral Funding Company

Even though there were several people working on our website, everyone was always up to speed and knowledgeable about progress and deliverables. They created an environment that was productive when feedback or concerns were needed. They were prompt and communicated very well.

UI/UX Design & Dev for Construction Tech Startup

I was impressed by their persistence and knowledge. Our new project manager gives excellent advice and presents many well-informed solutions. When I give them a task to work on, they think critically about how each solution will affect the cost and quality.

Platform & Android App Dev for Restaurant Marketing Company

If the developers I’m working with don’t have all the answers, they have huge resources of other knowledge inside their company.

Software Development & Maintenance for Education Consultancy

What did you find most impressive or unique about this company? Very well equipped with cross-industry knowledge. Very proficient and fast.

UI Design & Implementation for FinTech Company

JetRockets did very well, and all of the deliverables were executed on time. We communicated via Microsoft Teams as well as phone and email.

Website Redesign for Jewelry Association

They did a great job of meeting deadlines and delivering what was necessary in a timely fashion. Having Natalie as the main contact helped to facilitate the initiative more effectively. Our only hiccup was the articulation of information, but Natalie stepped in and addressed any challenges we expressed.

Order Management System for European CNC Network Startup

We’re satisfied with them. They’re interactive, they reply quickly, and they adapted to our changing requirements. As a startup, we have many requirements that become outdated before we even finished discussing them, and JetRockets provided good management for that environment.

Custom Software Development for Healthcare Co

JetRockets provided outstanding project management throughout the entire engagement. From the start, they laid out a clear timeline with defined milestones and consistently delivered key components on time, often ahead of schedule. They set up regular calls to keep us updated on progress and maintained excellent communication. Additionally, they created a dedicated Slack channel for real-time discussions, which made collaboration seamless. Their ability to adapt to our evolving needs was impressive. Whenever we requested changes or added new features, they promptly assessed the impact and provided realistic timelines for the updates.

Ruby on Rails Web Dev for Online Educational Service

It's always great. We are in constant communication and use Agile technology. We have short cycles of 1-2 weeks. During that time, we have communication if something goes wrong. That’s actually the best part of the work.

Microsoft Dynamics 365 Set Up for Recruitment Consultancy

What impressed us most was their strong knowledge of Microsoft Dynamics 365 and how quickly they grasped the specific needs of the financial services industry. They didn’t just implement features; they offered suggestions to optimize our processes. Their ability to balance technical execution with business insight made them more than just a vendor they were a real strategic partner.

Web & AI Development for Global Marketplace

Torii Studio’s project management has been one of the standout aspects of our collaboration. They’ve consistently delivered high-quality work on time, even under tight deadlines and shifting requirements. Their team is incredibly reliable, you don’t need to follow up twice. When they commit to something, they follow through.

Web & AI Development for Global Marketplace

What’s impressed me most is how responsive and adaptable they are. They don’t just react to our needs, they anticipate them. Whether it’s jumping in to fix a critical production issue or adjusting priorities when new challenges arise, they move quickly and with clarity.

Web & AI Development for Global Marketplace

Their level of professionalism and ownership has made them feel more like a true partner than an external agency. Communication has also been excellent. They keep us updated with progress, flag risks early, and always come prepared with solutions rather than just problems.

Web Development for Financial Company

They gently guided us through each development step, taking the time to adjust to our changing requirements and keep us aligned on project goals. As we worked through several technical difficulties and modifications, Helpful Insight Private Limited's strong dedication to cooperation and adaptability became clear. Their team's high degree of openness and readiness to make concessions not only inspired trust but also improved our working relationship.

iOS & Android App Dev for HealthTech Company

Their proactive communication stands out as one of their strongest traits. They provided regular reports that we could seamlessly share with clients, reinforcing client confidence in our capabilities. Additionally, their adaptability was evident in their ability to pivot when challenges arose, ensuring that projects stayed on track without compromising quality. One developer on their team, in particular, displayed remarkable insight and technical depth, exceeding our expectations and adding significant value to the project.

Mobile App UX Dev for Streaming Platform

Our key success metrics were the speed of delivery and conformance with our timeline — Phenomenon Studio met both of these factors. Their adherence to our quality standards was always 95%. The entire process was great. They were great at soliciting design requirements, understanding them, and developing the product.

App & Web Dev & Design for Mental Health Platform Company

The quality of the designs is fantastic. Also, the ability to work with us despite us being early-stage and needing to iterate quickly. The communication is excellent which is important to me when needing someone to clarify certain aspects.

UI/UX Design for Design Studio Company

The client loved the work that Phenomenon did and were amazed at the quality of output. The speed and quality at which they were able to take a concept and some rough, half-baked wireframes and turn them into an amazing and functional consumer-level product. I am blown away by the quality of work done by Phenomenon Studio.

UX/UI Design for IT Co

Phenomenon delivered a cohesive one page framework with aligned styles & components. We then moved to asset / animation creation, and iterated on assets together until a level of quality was reached that we were satisfied with. We then moved into polish and revisions, iterating towards an overall level of quality we were happy with.

Branding & Website Dev for Media Company

And the quality of work we received was always top-notch, thanks to their thorough quality checks before anything was finalized. It felt like they really had everything under control, which made the whole project run smoothly.

Mobile App & Web Dev for Personal Finance Application

The project management is excellent. HiGroup has never missed a deadline or a meeting. Communication is also so easy — they’re always available and responsive despite the time difference.

CRM Development for Fitness Company

higroup delivers on time, and their project management is great. They're very responsive, organized, friendly, and time-adaptable for our meetings. We communicate through in-person meetings, emails, and messaging apps. higroup's project manager, Maša, with whom we've had the most communication, is very smart, has a great overview of the entire project, and handles every step of the project very professionally.

Custom Software & App Dev for IT Consultancy Company 

They were very polished. The team was smart, and they knew their craft.

Mobile App Design & Development for Consulting Agency

Their team is very friendly. Collaborating with them was a great experience for us. We got to learn a lot of new things from them. They are communicative and courteous. At every stage, they guided us gently and shared valuable insights that made it easy for us to comprehend the project and other intricacies they were working on.

Web Portal Development for Private Bloggers' Community

Their team strength and capacity to deliver amazing web portal makes them stand out. They were always authentic and transparent. Their team shared regular progress and were very friendly.

React Native-Based App Dev for Publishing Company

The team members were cooperative and skilled. We are really happy with their determination and ability to draw inspiration from the finest apps in our industry.