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.
Jump to Most Reviewed Companies
List of the Best California Mobile App Development Companies
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1081$10,000+2 - 9 employeesLos Angeles, CAFounded in 2023, AlchemyX is a small Product Design company. Their services include Product Design and UX/UI Design.Read More
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1082$10,000+2 - 9 employeesLos Angeles, CAForthgoing is a small web design agency established in 2025. Their team provides Web Design and UX/UI Design.Read More
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1083Undisclosed250 - 999 employeesMenlo Park, CAKumaran Systems is a Menlo Park, California-based Enterprise App Modernization company. Founded in 1991, the team focuses on Enterprise App Modernization and BI & big data consulting & SI.Read More
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1084Undisclosed250 - 999 employeesSan Francisco, CAMidsize user experience company Cobweb Games, is headquartered in San Francisco, California. Their services include UX/UI Design and Graphic Design.Read More
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1085$50,000+250 - 999 employeesLos Angeles, CAJelvix is a midsize software development company founded in 2011. Their services include Custom Software Development, Mobile App Development, Artificial Intelligence, and cloud consulting & SI. The agency is headquartered in Tallinn, Estonia; Kharkiv, Ukraine; Stuttgart, Germany and London, England.Read More
Clients
Tiber Capital GroupIndustries
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1086$10,000+1,000 - 9,999 employeesLos Angeles, CAPOSSIBLE is a large UX design agency based in Los Angeles, California and Atlanta, Georgia. Their services include UX/UI Design and Content Marketing.Read More
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MicrosoftIndustries
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1087$5,000+2 - 9 employeesFremont, CANavaris Digital, a cloud consulting & SI company, was launched in 2016. The team offers cloud consulting & SI and IT managed services and is headquartered in Bengaluru, India and Fremont, California.Read More
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1088$5,000+Freelancer employeesAnaheim, CAHamza Digital, an user experience design agency, is located in Anaheim, California. The team provides UX/UI Design and E-Commerce Development.Read More
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1089$1,000+Freelancer employeesGardena, CA10xDev is a SEO services firm. Established in 2025, the agency focuses on Search Engine Optimization and Web Design.Read More
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1090$10,000+50 - 249 employeesSanta Monica, CAIT staff augmentation company Premiersoft was founded in 2011. The midsize Blumenau, Brazil-based team provides IT staff augmentation, Custom Software Development, and Mobile App Development.Read More
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1091UndisclosedFreelancer employeesSan Diego, CAPaul Lewallen Studios is a web development firm. The company is based in San Diego, California. Their services include Web Development and Mobile App Development.Read More
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1092$1,000+Freelancer employeesSacramento, CACity of Trees Tech is a Sacramento, California-based software development company. Launched in 2019, the team specializes in Custom Software Development and Web Design.Read More
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1093$1,000+50 - 249 employeesSan Francisco, CAFounded in 2019, Hygge Software is an AI company. Their midsize team is in Warszawa, Poland; Tallinn, Estonia; San Francisco, California and London, England. Their team focuses on Artificial Intelligence, Custom Software Development, Web Development, Mobile App Development, and more.Read More
Clients
HeatedIndustries
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1094$1,000+10 - 49 employeesSan Ramon, CAEstablished in 2017, Naqvix is an app development company. The firm offers Mobile App Development and Web Development, and is small.Read More
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1095$100,000+50 - 249 employeesSan Mateo, CAEstablished in 2017, Softbinator Technologies is a Product Design company. The company offers Product Design and IT staff augmentation, and is midsize.Read More
Clients
Life360 Sposor United Google Luxon PayIndustries
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1096$25,000+10 - 49 employeesSanta Monica, CABased in Santa Monica, California and Sahibzada Ajit Singh Nagar, India, Addval Solutions is a small website development company. Their services include Web Development and Mobile App Development.Read More
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1097Undisclosed2 - 9 employeesOakland, CAMobile application development firm Screenshotbot focuses on Mobile App Development and Application Testing. They were founded in 2020.Read More
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1098$5,000+10 - 49 employeesSanta Clara, CAHubrum Technologies Inc is an IT managed services company launched in 2017. The team provides IT managed services and IT staff augmentation.Read More
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1099Undisclosed250 - 999 employeesSanta Monica, CABuild Offshore Team, a software development firm, was established in 2012. The team provides Custom Software Development and Web Development.Read More
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1100$10,000+10 - 49 employeesSan Francisco, CAHarlo Agency is a small branding agency. Established in 2004, the team provides Branding and Marketing Strategy.Read More
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1101$5,000+10 - 49 employeesLos Angeles, CABased in Los Angeles, California, Brand Knew is a small website development firm. Their services include Web Development and Mobile App Development.Read More
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1102$5,000+10 - 49 employeesSan Francisco, CASEO company Ideal Visibility is based in San Francisco, California. They focus on Search Engine Optimization and Pay Per Click.Read More
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1103$5,000+10 - 49 employeesAgoura Hills, CAActive Ennovations is a custom software development company based in Agoura Hills, California. They focus on Custom Software Development and Web Development and were founded in 2004.Read More
Industries
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1104$5,000+10 - 49 employeesOakland, CAKollective Mobile, a web design agency, was established in 2010. Based in Oakland, California, the team provides Web Design and UX/UI Design.Read More
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1105$5,000+10 - 49 employeesIrvine, CATrinet Internet Solutions is a small web design agency located in Irvine, California and Frisco, Texas. The team offers Web Design and Web Development.Read More
Clients
Orange County Transportation Authority -
1106$5,000+10 - 49 employeesSan Francisco, CAMadrone Studios is a social media marketing firm. They specialize in Social Media Marketing and Web Design and are in San Francisco, California.Read More
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1107$5,000+10 - 49 employeesSan Jose, CASocial media marketing agency Jway Group was launched in 1994. The team provides Social Media Marketing and Content Marketing.Read More
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1108$5,000+10 - 49 employeesSan Francisco, CADesignworks - Inspire Action is a branding agency headquartered in San Francisco, California. Their services include Branding and Marketing Strategy.Read More
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1109$5,000+10 - 49 employeesClovis, CADigital Attic is a web design agency. Launched in 1992, the firm provides Web Design and Branding.Read More
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1110Undisclosed10 - 49 employeesSan Diego, CANOYO Web Development, a SEO company, is in San Diego, California. They focus on Search Engine Optimization and Web Design and were established in 2007.Read More
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