Top 100 Mobile App Developers in California
The Best of December 2025Looking for a top mobile app development company in California?
Building a mobile app is expensive. In fact, it can cost $10,000 to $150,000, unless you want an out-of-the-box solution with a DIY app builder. So, choosing the right app developer is important because it can save you time and money and result in an app that makes your business stand out.
As you begin the process of hiring an app development company, remember to define the type of app you want before starting conversations with developers. How complex your app idea is will determine your budget and the skill level you need in an app developer. Then, once conversations begin, ask for portfolio items, reviews, and references. Be sure to bring up timeline, too, so you align on expectations.
Overall, with about 90% of time on mobile spent in apps, investing in a mobile app for your business may help attract customers and get your brand in front of more people.
To assist you in your search for a partner, we’ve compiled this list of the top mobile app developers in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best California Mobile App Development Companies
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901$10,000+10 - 49 employeesLos Angeles, CALexis Solutions is an AI Consulting company. The Sofia, Bulgaria-based firm was established in 2017. The small team focuses on AI Consulting, Custom Software Development, Web Development, Mobile App Development, and more.Read More
Clients
Onnoplus.com Kreston Bulmar Reviewhero.io Inoreader.comIndustries
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902$100,000+50 - 249 employeesAustin, TXRead More
Established in 2012, Unique Software Development is a data analytics company. The firm offers BI & big data consulting & SI, Web Development, Custom Software Development, Mobile App Development, and more and has a midsize team. The firm is headquartered in Dallas, Texas; Washington, District of Columbia; New York, New York and Austin, Texas.
Clients
MODE TransportationIndustries
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903Undisclosed10 - 49 employeesSan Diego, CAAffinity Design Hub, a marketing strategy company, was founded in 2015. Their small team is based in San Diego, California. Their services include marketing strategy, search engine optimization, graphic design, logo, and more.Read More
Industries
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904$10,000+50 - 249 employeesSan Mateo, CAG360Technologies is a custom software development firm. Established in 2010, the team provides Custom Software Development, Generative AI, Application Testing, Application Management & Support, and more. Their midsize company is located in San Mateo, California and Montevideo, Uruguay.Read More
Industries
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905Undisclosed2 - 9 employeesSan Francisco, CALocated in San Francisco, California, Stimulant is a small mobile app development company. Their services include Mobile App Development and Web Design.Read More
Industries
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906$5,000+50 - 249 employeesLos Angeles, CARead More
Tech Reforms is a branding company. They provide branding, web design, ux/ui design, logo, and more and were founded in 2017. The company is headquartered in Los Angeles, California.
Industries
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907Undisclosed50 - 249 employeesSan Francisco, CACorona Labs is a San Francisco, California-based application development firm. They provide Mobile App Development and Custom Software Development and were founded in 2008.Read More
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908Undisclosed50 - 249 employeesCupertino, CATrilyon, Inc. Is an user experience agency. The Cupertino, California-based team focuses on UX/UI Design and Artificial Intelligence.Read More
Industries
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909Undisclosed50 - 249 employeesCupertino, CAAppPerfect Corp is a custom software development firm. Headquartered in Cupertino, California, their team focuses on Custom Software Development and Robotics Process Automation.Read More
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910Undisclosed2 - 9 employeesLos Angeles, CAMobile App Development Los Angeles is a mobile application development company. They are based in Los Angeles, California and have small team. Their team specializes in Mobile App Development.Read More
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911Undisclosed10 - 49 employeesLos Angeles, CAArProsoft Pvt Ltd is a Los Angeles, California-based mobile application development company. They provide Mobile App Development.Read More
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912$1,000+10 - 49 employeesSan Ramon, CARoundtechsquare is a social media marketing agency. The team specializes in Social Media Marketing and Search Engine Optimization and is based in San Ramon, California and Vadodara, India.Read More
Industries
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913$10,000+50 - 249 employeesLos Angeles, CAPhenomenon Studio is an UX design company. Their midsize team is in Dover, Delaware; Chicago, Illinois; New York, New York and Los Angeles, California. Their services include UX/UI Design, Web Development, Branding, Web Design, and more. The agency was established in 2019.Read More
Clients
Airportr Nomupay One Text ShagaIndustries
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914$10,000+10 - 49 employeesImperial, CAMonobits is a web development firm headquartered in Mexicali, Mexico and Imperial, California. The team offers Web Development and Mobile App Development.Read More
Industries
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915$1,000+10 - 49 employeesRedwood City, CARead More
Monster Code Corporation is a software development and web design company that was founded in 2013. They are headquartered in Redwood City, Calif., and have an additional office in Budapest. While Monster Code Corporation serves small and midmarket businesses, most clients are enterprise firms. Services include web design, web development, mobile app development, and e-commerce development.
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916$1,000+2 - 9 employeesMontebello, CAHeadquartered in Montebello, California, RG Pacific is an e-commerce development firm. They specialize in E-Commerce Development and Mobile App Development and were launched in 2008.Read More
Industries
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917$5,000+2 - 9 employeesLos Angeles, CAHYPER, an Advertising company, provide Advertising and Mobile App Development. They were launched in 2016.Read More
Industries
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918$5,000+2 - 9 employeesLos Angeles, CAAvital Web is a SEO agency located in Los Angeles, California. They specialize in Search Engine Optimization and Pay Per Click.Read More
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919Undisclosed2 - 9 employeesSan Diego, CACode Brilliant is a web design agency. The team offers Web Design and UX/UI Design and is based in San Diego, California.Read More
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920$5,000+2 - 9 employeesLos Angeles, CAReason Media Group is a small user experience agency launched in 2004. Their services include UX/UI Design and Branding.Read More
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921Undisclosed2 - 9 employeesSan Francisco, CANeumatic Digital is a small AR/VR development company. They provide AR/VR development and Branding and were launched in 2006.Read More
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922Undisclosed2 - 9 employeesSan Francisco, CAWeightshift is a small user experience company based in San Francisco, California. Their services include UX/UI Design and Graphic Design.Read More
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923Undisclosed2 - 9 employeesBurbank, CAVaylian, a small AR/VR development company, is located in Burbank, California. Their services include AR/VR development and Mobile App Development.Read More
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924Undisclosed2 - 9 employeesCarlsbad, CAFounded in 2006, Golf Pulp Media is a small Advertising company. Their team offers Advertising and Graphic Design.Read More
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925Undisclosed2 - 9 employeesIrvine, CADigital Marketing Pros is a branding company. Their small team is in Irvine, California and specializes in Branding and Logo. The firm was launched in 2014.Read More
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926Undisclosed2 - 9 employeesAnaheim, CAHighrise Elite Marketing, an application development company, specializes in Mobile App Development and Search Engine Optimization. The company is headquartered in Anaheim, California.Read More
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927Undisclosed2 - 9 employeesAnaheim, CACoaction Consulting, a Product Design company, was established in 2008. The team focuses on Product Design and Mobile App Development.Read More
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928Undisclosed2 - 9 employeesSan Ramon, CAD-Kode Technology, a web design company, offers Web Design and Web Development. The agency is based in San Ramon, California.Read More
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929Undisclosed2 - 9 employeesSan Clemente, CAComtek Website Design is a mobile application development company. Their team is in San Clemente, California and offers Mobile App Development and Web Design.Read More
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930Undisclosed2 - 9 employeesLos Angeles, CAUX design company HammockWeb is based in Los Angeles, California. They provide UX/UI Design and E-Commerce Development.Read More
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