Top 100 App Developers

3Advance rebuilt a website for a legal nonprofit to update security, improve email capabilities, and streamline UX. The website is a free service for journalists who have First Amendment or Freedom of Information questions.

“Feedback from users has been very positive. It was our first professional site; our old site was very static, and on this one, everything is updated without having to refresh a single URL.” – Legal Defense Director, Advocacy Nonprofit

Umbrella IT developed the second iteration of a popular social media networking app. While the new version hasn't launched, it's already received positive feedback. The client is confident about its success. 

"They [Umbrella IT] work at the highest level possible. If you know what you want, it will be built exactly per your specifications." – CEO, Social Networking App

The BHW Group was hired by a social network platform to build its website and mobile apps from the ground up. The founder of the company is very pleased with The BHW Group’s ongoing work.

“If I was to start the process over again, I'd use the same team and not waste any time calling other people.” – Founder, Social Media Company

Lean Apps worked on mobile app and prototype development for an entrepreneurship program. They provided end-to-end development for mobile apps, as well as designers, developers, and project managers.

“Their team is excellent. We’re in close communication on almost a weekly basis.” – CEO, Entrepreneurship Program

Codewave built a cloud-integrated product ecosystem for a B2B startup. The team developed a cloud system integrating several standalone time-tracking apps [iOS/Android]. A corresponding web interface was also built enabling master admin capabilities. Overall, the client was pleased with the team's work. 

"I think Codewave’s approach resulted in a more successful product. They also came up with ideas, and they would propose options that I hadn't thought of, and I liked that." — Founder, B2B Startup
 

Big Nerd Ranch developed a series of dynamic iPad apps that produced massive sales results in the first year. The client was impressed by their ideation process, customer service, and quality deliverables.

“I just felt comfortable with the team Big Nerd Ranch had. That’s the reason they got the initial business. They received the repeat business due to the quality of work and our pleasure with working with them.” – Director of Marketing, Pest Control Company

Clearbridge developed a full-featured iOS and Android app that enabled telecom customers to pay their bills and manage their statements. The client raved about the team’s proactive attitude, immaculate project management process, and flawless – though complex – deliverables.

“They’ve impressed multiple departments and teams within our organization. They’ve set a new standard for us.” – Product Manager, Telecommunications Company

Surf was contracted to perform updates and maintenance for a mobile app. Surf made improvements to the visual design and the user experience by ensuring pixel quality. Surf made suggestions for API and performs long-term maintenance. 

"Once we selected them, half of our app was completed within a week. It was absolutely perfect and I had no comments to make about their work." - CTO, Telecomm Startup 

LITSLINK partnered with an emerging AR/VR company to build the client's AR/VR software MVP while supplying website development. LITSLINK also created a website for the product and fixed any bugs. 

"It’s been great working with LITSLINK and they’re always responsive to our needs." - Founder, AR/VR Company

A filmmaker startup recruited Majestyk to develop a minimum viable project (MVP) for its platform, which allows students and professors in the film industry to connect, communicate, and submit projects. After the startup had a negative experience with another app development company, Majestyk saved the day, developing a web platform from the ground up.

“Majestyk developed our web platform, starting again from scratch. We plan to develop a mobile app in the future. … They’ve all been helpful in terms of communication.” – Co-Founder and CEO, Film Startup

The founder of a money transfer service had an idea for quick and seamless international money transfers and brought Prismetric on board to build both the iOS and Android apps.

“They are great to work with and always ready to make necessary changes without extra cost. The results were perfect, and I am satisfied with the project.” – Founder, Money Transfer Service

A lifestyle product company partnered with DECODE to build and design an app that helped users track vitamins and minerals using a a hardware pen. They provided the client with software engineering capabilities and the company received over 1,000 downloads in the first week. 

“Of course, they delivered the project, but what’s also important is the relationship with us and the way they work. Their communication was highly responsive, they were proactive and had that youthful zeal. I don’t know how they did it, but the whole time we were working together, we felt like we were their only client!” – CEO, Lifestyle Product Startup

OpenXcell developed a social media app targeted specifically at mothers for a consumer tech startup. They worked with the client, who had an in-house creative team, to implement their designs. They did all the backend development work and created apps for iOS and Android. The app was a success, surpassing the client’s expectations and gaining more than 1000 users within the first week.     

“If you think about the software development life cycle, I think OpenXcell excels in development. I can only speak from a partner’s perspective, but if you’re willing to put in the hard work with them, they will deliver.” – CEO, Consumer Tech Startup

Mercury Development built an app that car salespeople can use when talking to car manufacturers. The app shows the ideal combination of materials for a car to ensure the frame is lightweight but still sturdy.

“Whether I was talking to some of the leadership people, or the project managers, everyone was always enthusiastic. I never had a problem getting a hold of someone, and I never had any questions about them being realistic around timelines.” – Senior Manager of Digital Marketing, Chemical and Manufacturing Company

Sparx IT Solutions developed and designed a custom real estate web platform. Key features included a searchable property feature by various parameters. Overall, the client was pleased with the team's work and the quality of their service.

"Sparx IT Solutions delivered on their commitments. I commend the way their project coordinators dealt with the project requirements. We appreciate their professional attitude and high-quality outputs." — Project Manager, Real Estate Firm

An event planning firm needed CodigoDelSur to build them a clean and effective website. The agency helped with a lot of advancements including, design upgrades, and bug fixes. As a result, the website saw an increase in traffic and engagement.

“I’ve had no problems with anything, which is rare. Their [CodigoDelSur’s] Agile project management has been second to none, and the customer service has been fantastic.” – Digital Marketing, Event Planning Firm

An IT company hired RichestSoft to enhance its online presence. RichestSoft developed an e-commerce platform for the client – a website, iOS and Android apps – and designed both the front- and back-end.

“Once I present a task to them, they don’t hesitate to do it. The quality of the work is good.” – Director, IT Company

Tintash provided development services using emerging technologies on a range of projects for an enterprise home goods retailer. Their deliverables included AR and 3D Products, iOS mobile applications, applications in the interior design and product visualization vertical built using Unity, and Python-based systems that automated 3D asset management pipelines. The client was very impressed with Tintash's diligence and quality of work.

"Tintash has worked hard to deliver products on time. I’d argue that the quality of their work puts them above what we could find in Silicon Valley." – Head of Innovations, Home Good Retail Enterprise

December Labs built a mobile application for a communication technology firm in the US. The client maintains a web-based digital platform for government communication and needed mobile experts to integrate their functions into a mobile app. The December Labs team delivered the project on time with the requisite functionality. Furthermore, they did so with minimal interruptions thanks to proactive project management practices.

"They pay attention to detail, try to understand the problem, and come up with solutions instead of just meeting requirements. December Labs thinks through what you tell them to do and suggests alternatives when they are better for the project." — VP of Engineering, Communication Technology Firm

Diffco provided backend development services for a digital development firm. They worked primarily in PHP to develop the app, and also performed security checks on the product. The client was happy with the finished product and it has withstood rigorous third-party security checks.

“There was confidence that we don't need to be triple check their work. We never had to redo anything. Diffco US is very reliable. – CEO, Digital Development Firm

Halcyon developed an iOS and Android app to ease addiction treatment through community support. The team’s robust code, quality design, and transparent workflow impressed the client, as did the end-product.

“We are very satisfied with their work. We have incredible reviews on the App Store and a rating of 4.6 stars.” – Co-Founder, Addiction Treatment App

Chelsea Apps built an SDK for a customer feedback corporation. The SDK was to be inserted in customers' own mobile applications for better testing. It needed to be easy-to-understand for development teams to work with easily. Chelsea Apps made an SDK that was compatible for both Android and iOS.

"We're in the early days, but we've had 3 clients sign up to use the SDK and 2 of those clients are releasing updates to there own apps in the next month, so we're excited to see the user feedback, but the developer feedback so far has been great." - CTO, Customer Feedback Co.

Over a five-year span, SimbirSoft developed numerous web and mobile apps for brands in the client’s portfolio. The end-product enjoyed positive reviews and helped the client meet revenue goals, while the team’s service-oriented attitude and flexibility were also appreciated.

“It is always pleasant to deal with the SimbirSoft team. A devoted manager who is always in touch with us also creates this sense of comfort. Their speed of delivery and the quality of their work is excellent.” – Project Manager, Russian Publishing Company

Cleevio developed a mobile app for a financial technology company's QR code payment system. The app, which was developed for iOS and Android, allows users to make payments, track investments, and use other functionalities and allows merchants to post information about transactions and coupons. The resulting apps were sleek and appealing to younger generations.

“Cleevio’s programmers were focused on the work, and everything was successful when we tested the app with young people. This was our first time involving millennials with our product, and the feedback was very good.” – CEO, Financial Technology Company
 

Square Root Solutions developed a set of mobile apps for an education company. The apps let educators record, compile, and share progressive records of children's learning and development. Educators praised the apps for their ease of use and functionalities and parents showed significant interest in the product.

“Timely communication is one of the key strengths of this company. The Project Manager made a brilliant job of liaising between all members of the development team and us. This level of consistency made a huge difference and feedback was always welcomed and acted upon.” – Lead Consultant, Education Company

Promatics worked with a facility services provider to create an app that would let them coordinate better with their customers. They delivered iOS and Android apps, backend development for a website, and design.

“I'm amazed they were able to produce such quality results at such a low price. I expected to pay twice as much as they charged. They offered an unending commitment to my product, and the value for money is simply off the charts.” – Owner, Facilities Service Provider

NineHertz developed a Bluetooth app for both iOS and Android, plus provided logo design services. The client enjoyed the partnership’s transparency, open communication, cost-effectiveness, and functional deliverables.

“Everything was so good, I didn't have a single issue with them. If I found a bug or something that needed to be corrected, they were responsive and everything was good.” – Project Manager, Geolocation IT Firm

July Rapid took on a massive project for a video streaming service. They worked with the client to build multiple products, including a website and iOS and Android apps.

“[July Rapid] went a step ahead and made sure that everything that we wanted and needed to be done was incorporated very early on.” – Co-Founder, Video Streaming Service

TriState Technology LLP worked on Android and iOS development for a digital agency. They provided a supplemental team to develop and deploy the mobile applications. The client was satisfied with the quality of work they provided. 

“We haven’t launched the app yet, so we don’t have any metrics to report, but I’ve always been satisfied with the quality of their work.” – CEO, Digital Agency 
 

Singsys partnered with an online grocery purchasing app to supply mobile development services for the app. They supplied design, development, and UX/UI design and the project was successful. They saw a significant number of organic downloads. 

“I was awe-stuck by the extreme professional ethics conditioning of the team which has been quite commendable throughout the project-delivery timeline. Upon the post-completion of the project, sincere coordination and follow-up has been even praise-worthy.“ – Owner, Online Grocery Purchasing App