Top 100 Mobile App Developers in California
The Best of October 2026Looking 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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931$5,000+2 - 9 employeesSan Diego, CASmartmicros, an app development company, is located in San Diego, California. The team specializes in Mobile App Development and Social Media Marketing.Read More
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932$1,000+10 - 49 employeesFremont, CAFounded in 2015, OneGreenDiary is a small ERP consulting and SI company. Their team focuses on ERP consulting and SI and Web Development.Read More
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933$1,000+50 - 249 employeesSanta Clara, CAWeb design company Hire Frontend Developer India is headquartered in Santa Clara, California and Ahmedabad, India. Their services include Web Design and Web Development.Read More
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934$1,000+50 - 249 employeesCorona, CAAppedology is an application development firm. Established in 2016, the company specializes in Mobile App Development and Web Development.Read More
Clients
The University Network -
935UndisclosedFreelancer employeesSacramento, CAMobile app development company Electric Web is in Sacramento, California. They focus on mobile app development, custom software development, digital strategy, search engine optimization, and more and were launched in 2010.Read More
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936$1,000+10 - 49 employeesSan Francisco, CANaeemic is a small Karachi, Pakistan-based IT strategy consulting company. Their services include IT strategy consulting and Cybersecurity.Read More
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937$10,000+2 - 9 employeesSan Francisco, CAGet It Built is an application development company established in 2017. Their team focuses on Mobile App Development and Web Development.Read More
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938$10,000+10 - 49 employeesLos Angeles, CALexis Solutions is a software development firm launched in 2017. The firm offers Custom Software Development, Web Development, AI Consulting, Mobile App Development, and more and has a small team. The firm is in Sofia, Bulgaria; Los Angeles, California and Berlin, Germany.Read More
Clients
Onnoplus.com Kreston Bulmar Reviewhero.io Inoreader.comIndustries
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939Undisclosed1,000 - 9,999 employeesBrea, CANisum, a large software development company, is in Brea, California and Fremont, California. The team focuses on Custom Software Development and IT strategy consulting.Read More
Clients
GapIndustries
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940$5,000+2 - 9 employeesRiverside, CASevilla Local Media, a mobile application development company, was established in 2010. The team focuses on Mobile App Development and Social Media Marketing.Read More
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941$50,000+250 - 999 employeesBeverly Hills, CARootstrap is a Beverly Hills, California-based custom software development firm. The midsize agency was established in 2011. Their team specializes in Custom Software Development, Artificial Intelligence, Web Development, BI & big data consulting & SI, and more.Read More
Clients
MasterClass Google Tony Robbins EmeritusIndustries
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942Undisclosed50 - 249 employeesSan Jose, CA360 IT Professionals is a midsize San Jose, California-based CRM consulting and SI company. Their services include CRM consulting and SI and Mobile App Development.Read More
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943$100,000+50 - 249 employeesMarina del Rey, CARead 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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944Undisclosed2 - 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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945Undisclosed50 - 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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946Undisclosed50 - 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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947Undisclosed50 - 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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948Undisclosed2 - 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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949Undisclosed10 - 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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950$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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951$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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952$10,000+50 - 249 employeesLos Angeles, CAPhenomenon Studio, an user experience design agency, was established in 2019. Located in Dover, Delaware; Chicago, Illinois; New York, New York and Los Angeles, California, their midsize team offers UX/UI Design, Web Development, Custom Software Development, Branding, and more.Read More
Clients
Wisdom iolo/RealDefense One Text ArtisanIndustries
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953Undisclosed10 - 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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954$50,000+2 - 9 employeesSan Francisco, CAKid2Design is an Indianapolis, Indiana-based AI company. They provide Artificial Intelligence and Custom Software Development and were established in 2025.Read More
Industries
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955$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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956$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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957$10,000+50 - 249 employeesSan Francisco, CADouble Coconut is an application development firm. The midsize San Francisco, California-based company was established in 2012. Their services include Mobile App Development, Web Development, Custom Software Development, UX/UI Design, and more.Read More
Clients
EA Sports | Madden NFL Microsoft Casual Games Ellen Degeneres OTG GamesIndustries
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958$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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959$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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960Undisclosed2 - 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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