Taking your project from idea till launch
Interexy is a trusted app and web development company that helps you reach a competitive edge in the challenging market.
We understand the importance of trusting your app development partner, so we always keep transparency throughout the whole process and guarantee your peace of mind until the last stage. If you have an idea - we cover the rest with no hassle!
Interexy LLC is headquartered in Miami andwith a developer center in Europe. Among our clients are such prominent companies as SAP, Pampers & Square, and others. We provide app development for over 15 industries, including blockchain, NFT, healthcare, fintech, marketplace, food delivery, social software solutions, retail, e-learning, and more.
Our clients valuehigh adaptability, responsiveness, and proactivity that we offer at each and every step. Therefore, your product will be done based on your unique wishes without sacrificing quality and compliance with the industry's guidelines.
Why choose Interexy for your project? We work with any idea. We quickly accept and resolve any changes at every given moment. We have teams with unique skill sets. You bring a challenge - we provide your next-gen solution.
Our Focus includes:
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App development from scratch (iOS, Android, Web);
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Custom Blockchain and NFT development;
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Outstanding UI/ UX design.
We not only can make your app the next market giant but also ensure the whole time you spend with our team will be stress-free, engaging, and straightforward. We take care of your ideas and suggest the best ways we can realize them.
Tell us about your project via free quick call!

headquarters
other locations
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29A WilczaWarszawa 00-544Poland
Focus
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Portfolio
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MyRedGo
MYREDGO specializes in repairing smartphones & tablets with the aim of solving your urgent problems in record time! Repairs are done directly in our 100% electric vehicles which are equipped like real operating theatres for your devices!

MedKitDoc: Business Class in Digital Healthcare
MedKitDoc is German-based startups committed to disrupting the digital health industry with a revolutionary product – an app allowing physicians & patients to connect online.

Linguix: Free Writing Assistant
Linguix is Free Writing Assistant. It’s a SaaS product with Russian-originated founders dedicated to the improvement of the writing capabilities of its users all over the world.

One Rover – Request a Ride
One Rover is an on-demand ridesharing service with a plan to improve the whole ridesharing industry as it is right now. The service offers better drivers & users’ benefits, delivery functionalities, great customer support & loyalty system.

Crumb
Crumb is a Hamburg-based fintech health startup mobile application based on the idea of rewarding users for health & fitness activities. The service plays a huge role in marketing for local businesses as well, since businesses are providing discounts for activities of users within the app – which builds a very healthy referral system and helps the product and local businesses to grow rapidly.
Reviews
the project
Mobile App Development for App Development Company
"I was thoroughly impressed with the creativity of the developers."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
I am the owner of Anderson Applications LLC.
For what projects/services did your company hire Interexy LLC, and what were your goals?
I hired them to develop a startup VPN mobile application for me and my goals were to design a cutting edge, modern and unique application for my users.
How did you select this vendor and what were the deciding factors?
I selected this vendor based on their previous project sizes, experience in the required fields as well as their quality of work.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
The project was appropriately divided into several fields, with a detailed design plan and design mock-up provided. Weekly calls were established with user feedback and the latest technologies for project management.
How many resources from the vendor's team worked with you, and what were their positions?
A project manager was assigned along with business analyst, front end developer, backend developer and designer.
Can you share any measurable outcomes of the project or general feedback about the deliverables?
Currently, my application is still in the development phase, however I was blown away by the current quality it far exceeds my expectations going into the app so much so that I've decided to add many more features.
Describe their project management style, including communication tools and timeliness.
Deadlines and reconsideration were always met swiftly and promptly, I received responses back on all questions the same day. If a concern arose it was explained in great detail.
What did you find most impressive or unique about this company?
I was thoroughly impressed with the creativity of the developers as this is very hard to find they know what it takes to make a successful app and to not incorporate any low-quality elements. Also they troubleshoot better than any company Ive seen other companies just give up.
Are there any areas for improvement or something they could have done differently?
No problems I could not address with them.
the project
Mobile App Support for Electronic Devices Company
"The flexibility of the team and the ease of communication are impressive."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
I run Business Operations at ZiO Health. We develop portable diagnostic point-of-care devices.
For what projects/services did your company hire Interexy LLC, and what were your goals?
We had our mobile App developed from another agency, we were satisfied with the result however we weren't happy with their maintenance support. We then hired Interexy for on-going maintenance support for our mobile App. The goal was to receive prompt support and quick bug fixing.
How did you select Interexy LLC and what were the deciding factors?
We had been in touch with Interexy before, so when we started looking for new support we started from the existing contacts. We had a couple of calls and received a personalized quote for our needs. We also wanted a stable dedicated team, and they were offering this.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
We had a kick-off meeting to explain current problems, we then gave the team access to all the repositories and then had another call. We then decided together with the communication process for the bug fixing and put it in place.
How many people from the vendor's team worked with you, and what were their positions?
One PM dedicated to our project, one front-end developer, two backend developers, one UI/UX designer.
Can you share any measurable outcomes of the project or general feedback about the deliverables?
The team optimized different functionalities of the app, so that now the user can have a better experience and access information easily
Describe their project management style, including communication tools and timelines.
We used Slack as main communication channel and Jira for bugs communication. We have weekly meetings with the entire team to update on the current stage of development.
What did you find most impressive or unique about this company?
The flexibility of the team and the ease of communication are impressive.
Are there any areas for improvement or something they could have done differently?
Overall we are satisfied with the team, sometimes it takes a little bit longer to fix a bug than the estimate, but they're quite receptive and trying to improve this aspect.
the project
Mobile App Development for Media Production Firm
"We are totally satisfied, no improvements from my perspective!"
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
I am a partner at a Media Production company with several brands, our newest is Room Snap, the real estate photography app.
For what projects/services did your company hire Interexy LLC?
We wanted to put our photo capturing and editing process into the hands of realtors, allowing them to capture stunning photos right on their phones.
What were your goals for this project?
We wanted to create an app that was easy to understand, easy to use, and delivered great results.
How did you select Interexy LLC?
After speaking with several developers, we found that Interexy was not only a knowledgable and talented team, but they had mastered their process and presented it to us in an easy to understand manner.
Describe the project in detail.
We were starting from scratch, and we knew nothing about developing an app. Interexy helped us breakthrough and jump over hurdle after hurdle to create a product that we are incredibly proud of.
What was the team composition?
We were assigned a manager who had weekly check ins, a developer, a designer, and several coders were managed during the project and everything went really smoothly.
Can you share any outcomes from the project that demonstrate progress or success?
We are still holding off on the launch of our app, however just based on our private marketing materials we've been approached by investors. Our app looks sharp, it functions wonderfully, Interexy really brought it to life.
How effective was the workflow between your team and theirs?
Workflow was managed flawlessly. There were some things that required a little time on our part, mostly due to administrative privileges on multiple accounts, but nothing was ever a hassle, and our manager navigated us through everything perfectly.
What did you find most impressive about this company?
I'm most impressed with their constant contact, their willingness to accommodate, their beautiful design work, and their delivery as promised.
Are there any areas for improvement?
We are totally satisfied, no improvements from my perspective!
the project
Staff Augmentation & App Dev for Education Software Company
"Even though there were no hiccups, the account manager was always there to support us."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
Labster is a company dedicated to developing fully interactive advanced lab simulations for school and college/university students. We combine these with gamification elements such as an immersive 3D universe, storytelling and a scoring system which stimulates students’ natural curiosity and highlights the connection between science and the real world.
I am the mobile app Project Lead, and have been working with Interexy developers to create a wonderful product for our audience.
For what projects/services did your company hire Interexy LLC?
We required the services of an expert company to supply us with their best talent for backend development and quality assurance requirements. The backend development required NodeJS and CMS expertise. The quality assurance required great attention to detail, manual functional and user interface testing.
What were your goals for this project?
To launch the product on time with the best resources working on a high-quality product.
How did you select Interexy LLC?
We selected them via a third party platform and hired them after a few interviews and portfolio review.
Describe the project in detail.
Labster mobile app required to have an Android interface for fully interactive advanced lab simulations along with multiple other activities like quizzes, leaderboard, etc. The backend was handled by Interexy experts, and they created high-quality APIs with NodeJS as per our product requirements after careful consideration.
What was the team composition?
1 Backend Developer with NodeJs and CMS expertise 1 QA with manual testing skills
Can you share any outcomes from the project that demonstrate progress or success?
A very high-quality product functioning overall implies hard work done in QA. The product is being developed in a very dynamic and scalable way so that we can easily pivot from our MVP. The backend developer has worked very hard on it.
How effective was the workflow between your team and theirs?
Very smooth communication and workflow management. Daily scrums, Sprint planning, use of proper tools ensured that no one was left out of the loop and that the entire team, even remotely distributed, stayed super focused.
What did you find most impressive about this company?
A dedicated project manager/account manager was allocated to us free of cost, even when we never asked. We were always kept updated about the progress very transparently. Even though there were no hiccups, the account manager was always there to support us.
Are there any areas for improvement?
The onboarding can be made smoother, where we can have more communication about the requirements, expectations, etc. Everything else has been perfect and the quality of work is superb.
the project
App Development for Hospitality Startup
"They deliver quality results and take the time to understand how users would use the product."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
I was working on a lean startup idea for a mobile app, and decided to have it developed after I completed the requirements and wireframes
For what projects/services did your company hire AMS LLC?
Mobile app development
What were your goals for this project?
Bring a minimum viable product to market
How did you select this vendor?
In interviewed several firms and narrowed it down to 2. I went with AMS LLC because they took the time to explain my options.
Describe the project in detail.
We worked through a few iterations and one big pivot in response to changing market conditions. Project was managed over morning meetings, with working code demonstrated often.
What was the team composition?
Myself and two developers
Can you share any outcomes from the project that demonstrate progress or success?
I was very happy with the results and the quick response to all of my UAT feedback
How effective was the workflow between your team and theirs?
Very good.
What did you find most impressive about this company?
They deliver quality results and take the time to understand how users would use the product.
Are there any areas for improvement?
I think we’d be even more efficient in a future project, mainly because I learned a lot as product owner.
the project
App Development for Travel Tech Startup
"The quality of the product and the speed with which the application was coded were impressive."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
I am the CEO of a travel-tech startup in London. At the moment we only have a couple of employees.
For what projects/services did your company hire AMS LLC?
We wanted to build a Beta of a travel application with which we could approach investors and raise capital to build out a full, more detailed version.
What were your goals for this project?
We wanted a fully functional application that displayed its unique features.
How did you select this vendor?
We sent out a job description on a freelance website and, following a short hiring process, made the decision to bring their team onboard.
Describe the project in detail.
Once the project began, we had a series of calls to discuss the overall structure of the application. This was followed by months of detailed changes to get the product into a suitable shape.
What was the team composition?
Originally we spoke with a senior member of the team in the introductory stage. We were then assigned a project manager for the duration of the work, with whom we've had constant direct contact.
Can you share any outcomes from the project that demonstrate progress or success?
The Beta was built in the space of around 5-6 months. It's very impressive, easy to use, and achieves its primary purpose.
How effective was the workflow between your team and theirs?
The project manager has been very easy to contact and has answered all our questions in detail.
What did you find most impressive about this company?
The quality of the product and the speed with which the application was coded were impressive. So was the rapid communication between their team and ours.
Are there any areas for improvement?
None.
the project
App Dev & Design for Restaurant Brand
"They are very talented developers and designers."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
I am the Global Expansion Director. The company owns and operates its own restaurants brands.
For what projects/services did your company hire Interexy LLC, and what were your goals?
To develop a new app idea that will be used by our guests.
How did you select this vendor and what were the deciding factors?
Vendors selection process was handled by another department.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
App design and app development.
How many resources from the vendor's team worked with you, and what were their positions?
Their ewas a huge team but I meanly interacted with he sales team, project management and app main developers an designer.
Can you share any measurable outcomes of the project or general feedback about the deliverables?
The project team is amazing and we have no issues with them. However, we did face issues with Interexety management and client handling. This is an area they will need to watch out for because its a costly element to do mistakes in.
Describe their project management style, including communication tools and timeliness.
They are amazing and managed the project efficiently, making sure all deadlines are met and kept a good track of the whole project progress.
What did you find most impressive or unique about this company?
Design and development team's creativity and ability to think out of the box. Their project management approach reflects efficiency.
Are there any areas for improvement or something they could have done differently?
Highlighted earlier.
the project
Custom Software Dev for IT Services Company
"Everything was delivered on time, and all problems were quickly solved."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
Online privacy
For what projects/services did your company hire Interexy LLC, and what were your goals?
We hired Interexy LLC to develop our Windows based connection software. The goal was to keep the interface as simple as possible whilst allowing updates to be carried out from external sources.
How did you select this vendor and what were the deciding factors?
We had hired the company previously to help with app development.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
The work was carried out over 4 months with constant updates and communication.
How many people from the vendor's team worked with you, and what were their positions?
3
Can you share any measurable outcomes of the project or general feedback about the deliverables?
Everything was delivered on time, and all problems were quickly solved.
Describe their project management style, including communication tools and timeliness.
Excellent from start to finish.
What did you find most impressive or unique about this company?
Nothing was too much trouble.
Are there any areas for improvement or something they could have done differently?
No.
the project
Mobile & Web App Dev for Marketing & Advertising Company
"They are good developers with a great attitude and they are very dedicated."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
Ourcart, CEO
For what projects/services did your company hire Interexy LLC?
Mobile app and web development
What were your goals for this project?
Port and Android app to an iOS app, and build a web interface for a new product we launched
How did you select Interexy LLC?
Prior acquaintance
Describe the project in detail.
Port and Android app to an iOS app, and build a web interface for a new product we launched
What was the team composition?
iOS and web developers
Can you share any outcomes from the project that demonstrate progress or success?
iOS app was delivered with high quality on time. Web development is ongoing.
How effective was the workflow between your team and theirs?
Very effective
What did you find most impressive about this company?
They are good developers with a great attitude and they are very dedicated.
Are there any areas for improvement?
no
the project
App Dev for Small Startup App
"They clearly want to listen and address their customer's needs, all with a very positive attitude!"
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
I'm architecting an app for a small startup I'm launching. This is a solo project for me so a strong third-party team is important.
For what projects/services did your company hire AMS LLC?
I had built out a demo model of my app with very limited functionality. I needed a team to take my vision and expand it into a real world application.
What were your goals for this project?
Create an app with users and admin roles that will help small businesses utilize QuickBooks Online more efficiently and effectively.
How did you select this vendor?
I did some research and read reviews. In order to maximize value I was looking for a company offering fair pricing along with a great reputation. I also wanted a history of delivering on time. AMS checked all the boxes for me.
Describe the project in detail.
A mobile app that extends that functionality of a popular business accounting platform. It connects to the app using the platform's api, with all connections done automatically on the backend. The AMS team also built out an sdk for the app to have a user and admin system complete with a user permission page. The admin and users can be billed monthly through the Google Play and iOS app stores. .
What was the team composition?
Project manger along with a lead developer for Android and a lead developer for iOS.
Can you share any outcomes from the project that demonstrate progress or success?
The team has hit all deadlines with clean versions of the app at each milestone for testing.
How effective was the workflow between your team and theirs?
Very good, it is just me on my side which was all the more important to have a strong third party partner. They are very responsive to my needs and are very effective with their communication. I've never had to wait long for response and any questions or concerns are addressed almost immediately. .
What did you find most impressive about this company?
Their knowledge of app development, not just the app itself but the process. And also responsiveness to my needs, any changes or suggestions are met with an open minded approach. They clearly want to listen and address their customer's needs, all with a very positive attitude!
Are there any areas for improvement?
The team has met all my expectations.
Although the app is still in its development phase, the client praises its current version's quality. A reliable partner, Interexy LLC strictly adheres to the timelines and quickly implements feedback. They utilize the latest technologies to provide the best possible solution for the client's needs.