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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1291Undisclosed250 - 999 employeesLos Angeles, CANet Solutions is an AI firm. Their midsize team is based in Toronto, Canada; Chandigarh, India; London, England and New York, New York and provides Artificial Intelligence, E-Commerce Development, Enterprise App Modernization, Custom Software Development, and more. The firm was founded in 2000.Read More
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MicrosoftIndustries
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1292Undisclosed250 - 999 employeesPleasanton, CACriticalRiver Inc. Is a cloud consulting & SI company founded in 2014. The team focuses on cloud consulting & SI and IT managed services and is in Pleasanton, California and Hyderabad, India.Read More
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1293$5,000+10 - 49 employeesSan Francisco, CALocated in Milano, Italy and San Francisco, California, WebRatio is a custom software development company. They focus on Custom Software Development and Mobile App Development.Read More
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1294Undisclosed250 - 999 employeesPleasanton, CAFounded in 2005, Folio3 Software is a midsize Pleasanton, California-based custom software development firm. Their team offers Custom Software Development and Web Development.Read More
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1295$5,000+2 - 9 employeesRancho Cucamonga, CAFounded in 2010, RockonIT is a branding agency. Their team specializes in Branding and Social Media Marketing.Read More
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Coldwell BankerIndustries
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1296$5,000+2 - 9 employeesSan Diego, CATranscend Solutions, Inc. Is a branding company. Their small team is in San Diego, California. Their services include Branding and Search Engine Optimization.Read More
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1297$5,000+2 - 9 employeesSan Diego, CAITegrity Web Technologies is a San Diego, California-based SEO agency. Founded in 2002, the team provides Search Engine Optimization and Web Design.Read More
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1298$5,000+2 - 9 employeesSan Diego, CAJetscram is a small branding agency in San Diego, California. Their services include Branding and Web Design.Read More
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1299$5,000+2 - 9 employeesLos Angeles, CAEstablished in 2000, Vonderland Studios Inc is a branding company. Headquartered in Los Angeles, California, the team provides Branding and Marketing Strategy.Read More
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1300$5,000+2 - 9 employeesSan Jose, CAPixelwebsource is a small web design agency based in San Jose, California. The team specializes in Web Design and Custom Software Development.Read More
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1301$5,000+2 - 9 employeesElk Grove, CAEstablished in 2009, Summit Marketing, Inc is a small PPC company. Their services include Pay Per Click and Search Engine Optimization.Read More
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1302$5,000+2 - 9 employeesSacramento, CASmall web design company Lake WebWorks, is located in Sacramento, California. The team offers Web Design and Web Development.Read More
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1303Undisclosed2 - 9 employeesLakewood, CABranding agency Senarysoft was established in 2012. The company specializes in Branding and Web Design.Read More
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1304Undisclosed2 - 9 employeesPasadena, CAFounded in 2003, WYNK Marketing is an Email Marketing company. The small team specializes in Email Marketing and Graphic Design.Read More
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1305Undisclosed2 - 9 employeesVista, CARandy Speckman Design is a web design agency. The Vista, California-based firm specializes in Web Design and Email Marketing.Read More
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1306Undisclosed2 - 9 employeesTemecula, CAWolfe Interactive, Inc., a social media marketing company, focuses on Social Media Marketing and Content Marketing. The agency is based in Temecula, California.Read More
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1307Undisclosed2 - 9 employeesPasadena, CATrinus Corporation is an IT managed services company. They are in Pasadena, California and have small team. Their team offers IT managed services and Search Engine Optimization.Read More
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1308Undisclosed2 - 9 employeesClovis, CAMoreseos is a small Clovis, California-based user experience design company. Their services include UX/UI Design and Graphic Design.Read More
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1309Undisclosed2 - 9 employeesSanta Monica, CAWebRotate 360 LLC is a SEO services firm. The team offers Search Engine Optimization and Pay Per Click, and the firm is in Santa Monica, California.Read More
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1310Undisclosed10 - 49 employeesSan Diego, CADigital Marketing Group LLC is a small Content Marketing company founded in 2013. Their team specializes in Content Marketing and Search Engine Optimization.Read More
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1311$5,000+50 - 249 employeesSan Francisco, CAMidsize e-commerce development company Riddle & Bloom, is located in Boston, Massachusetts and San Francisco, California. Their services include E-Commerce Development and Mobile App Development.Read More
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1312$10,000+50 - 249 employeesUnion City, CACloudpacer Inc, a custom software development company, specializes in Custom Software Development and Web Development. The company is in Union City, California and Lahore, Pakistan.Read More
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1313$25,000+250 - 999 employeesSan Francisco, CARobosoft Technologies Inc. Is a San Francisco, California-based app development company. They offer Mobile App Development, UX/UI Design, Web Development, Custom Software Development, and more and were launched in 1996.Read More
Clients
Warner Bros. Discovery HSBC McDonalds Mercury FinanceIndustries
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1314$50,000+250 - 999 employeesPalo Alto, CARead More
InApp was founded in 2000 and currently has 300+ employees. Headquartered in Trivandrum, India, their services include web development, custom software development, and mobile app development. They also have another location in Palo Alto, Calif.
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1315$10,000+10 - 49 employeesHuntington Beach, CAAlokin is a software development company founded in 2011. Their services include Custom Software Development and Web Development.Read More
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1316Undisclosed10 - 49 employeesLos Angeles, CATechTilt Technologies , an UX company, is in Chennai, India and Los Angeles, California. The team specializes in UX/UI Design and Mobile App Development.Read More
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1317$10,000+10 - 49 employeesLos Angeles, CACitrusbyte, a small website development firm, is based in Los Angeles, California and New York, New York. The team focuses on Web Development and Custom Software Development.Read More
Industries
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1318Undisclosed50 - 249 employeesSan Jose, CAMumba Technologies is an IT strategy consulting company. Launched in 2010, the team offers IT strategy consulting and BI & big data consulting & SI.Read More
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1319Undisclosed250 - 999 employeesIrvine, CARead More
Authority Partners is a software firm based in Irvine, Calif. with more than 250 employees. They are experts in UX/UI design, IT managed services, and custom software development for various clients.
Clients
ArtisIndustries
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1320Undisclosed10 - 49 employeesLos Angeles, CAAccunity Website Design is an UX design agency. Their team is in Addison, Texas and Los Angeles, California. The firm offers UX/UI Design and Custom Software Development.Read More
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