Top 100 iPhone Applications Development Companies in the United States

Moonstone Interactive is a digital agency based in San Ramon, CA. Founded in 1996, Moonstone Interactive's team has grown to more than 10 employees. The digital agency provides a variety of different services such as e-commerce development, web design, and SEO, but specializes in web development capabilities.

Twin Sun is a digital firm that was founded in 2017 and is located in Nashville, Tenn. Twin Sun's team of about 10 employees specializes in web development, custom software development, and mobile app development. 

Design Center is a mobile app development company from Saint Paul, Minn. It was founded in 1969 and has about 40 employees.  Several clients are large national brands. They do mobile app development, UI/UX design, and web development.

Bellwood Labs is a development agency founded in 2019 in Atlanta. With a team of fewer than 10 employees, they provide custom software development, web development, mobile app development, and more to small, mid-sized, and enterprise-level businesses in IT, financial services, advertising, and more. 

Atom6 is a Jackson, Wyoming-based user experience design agency. The small team focuses on ux/ui design, web design, product design, graphic design, and more and was founded in 2016.

Shift3 Technologies is a software-development-as-a-service firm based out of Fresno, Calif. Founded in 2013, the team of 65+ specializes in custom software, web, and mobile app development as well as enterprise system modernization and integration to help its small to mid-market clients achieve their goals. 

Haneke Design is based in Tampa, FL. The software development and its 20+ developers are focused on delivering user-focused solutions for connected devices to their various range of clients. 

UPQODE is a website design and development agency based in Nashville, Tennessee. Founded in 2015, the team of 40+ specializes in web development, web design, and e-commerce development. They work with small businesses, focusing on information technology, e-commerce, and business services.

Agency Partner Interactive LLC is a web design and digital marketing agency located in Addison, Tx.  They were founded in 2010. With roughly 33 team members, they provide custom software development, web design, and web development services. Typically, their clients are small businesses or midmarket firms in advertising and marketing, e-commerce, or IT. 

Graveflex, a web development firm, was established in 2016. The agency offers web development, e-commerce development, ux/ui design, custom software development, and more and has a small team. The agency is based in Chicago, Illinois and Los Angeles, California.

Roonyx is a web, mobile app, and AI development company founded in 2008 that caters their services to small business and midmarket clients. They have a team of nearly 30 employees who provide services from Moscow and Boston. They focus on the business services, automotive, and e-commerce industries.

InnoviMobile is an app development agency located in New Jersey with additional offices in Toronto, Canada and New York, NY. The team of fewer than 50 employees has been developing apps for mid-market and enterprise businesses since 2007.

Kromeon is a software development firm based in Encinitas, Calif. and was founded in 2015. Their team of 4 employees specializes in custom software development, CRM consulting, and eCommerce development.

Dragon Army is an Atlanta-based mobile app marketing and development firm. Started in 2013, their award-winning 10+ team focuses on creating the world’s most delightful mobile experiences.

Compoze Labs is a product-focused software development shop based in Minneapolis. The company, founded in 2018, has more than ten employes and provides custom software development, mobile app development, IT managed services, and web development to enterprise and smaller-sized companies.

Established in 2017, Meta App Designs is an app development firm. Located in Concord, California, their small team offers mobile app development, blockchain, AR/VR development, IoT development, and more.

CraftedQ is a cloud consulting & SI company. Established in 2013, the team offers cloud consulting & SI, custom software development, web development, mobile app development, and more. Their midsize agency is in Los Angeles, California.

WestLink is a midsize Boulder, Colorado-based software development company. Launched in 2016, the team focuses on custom software development, e-commerce development, mobile app development, web development, and more.

Cultivate is a brand agency based in Chicago that was founded in 2005. Their team of 92 employees offers a range of services including branding, mobile app development, UX/UI design, digital strategy, web development, and video production.

Dom & Tom was founded in 2009 and has offices around the U.S. in New York, Chicago, and Los Angeles. They are an end-to-end digital product development agency that focuses on emerging technologies. Their team of 100+ created over 120 native mobile apps and worked on 400+ web projects. They specialize in research and planning, UX strategy and design, engineering, QA (quality assurance), and deployment.

Reflections is a New York based digital innovations lab. They were founded in 1999 and have a team of 16 employees. They specialize in web development, mobile app development, and UX/UI design. They mainly work with small business and mid-market clients in the advertising, consumer products, and business services industries. 

This Orlando, Fla. app development agency was founded in 2008. Echo Interaction Group has about 10 team members who specialize in various technological practices such as enterprise app modernization, wearables development, hardware integration, marketing, and UX/UI design. 

Digital Scientists is a 10+ mobile app and custom software developer based in Alpharetta, GA, with offices in Atlanta and Greenville, SC. Founded in 2007, their team brings a designer’s approach to apps, e-commerce, and IoT projects with a rapid 90-day turnaround.

Rootstack is a web and mobile app development agency with offices in Panama City, Panama; Austin, Texas; and Medellin, Colombia. Founded in 2010, they employ 43 staff specializing in outsourcing software development for global companies in a range of industries. Services include graphic design, CRM development, mobile app testing and analysis, and API development.

MojoTech is a full-service mobile, web, and custom software developer with headquarters in Providence, RI and offices in Boulder, New York, and Washington D.C. Since 2008, the 10+ team has offered clients of all sizes a comprehensive and results-driven approach to digital success.

SPARK Business Works is a custom software development firm. They provide custom software development, mobile app development, web design, and web development and were launched in 2017. Their midsize team is Kalamazoo, Michigan-based.

Founded in 2001, InfiCare has nearly two decades experience in mobile design and development. With a team of almost 200 employees spread across offices in New Delhi, India and Washington, DC, InfiCare offers mobile and web design and development, SEO services, quality assurance testing, and more.

Chocolate Milk & Donuts is a full-service creative agency founded in 2016. Based in Austin, Texas, the team of 9 specializes in AR/VR development, video production, and advertising.

Founded in 2020, Bee Techy is a web design company. Based in Los Angeles, California, their small team focuses on web design, ux/ui design, web development, e-commerce development, and more.

Based in Solana Beach, California, Asymm is a website development company. The small agency was founded in 2020. Their team provides web development, custom software development, web design, ux/ui design, and more.