Top 100 Mobile App Developers in California
The Best of January 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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121$10,000+10 - 49 employeesCarlsbad, CARead More
Cofa Media is a development company based in Carlsbad, Calif. They were founded in 1998 and have about 12 employees that do web development, mobile app development, web design, and custom software development. Its clients are in healthcare, hospitality, IT, entertainment, and consumer products and services sectors.
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DexcomIndustries
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122$1,000+250 - 999 employeesSunnyvale, CAFounded in 2012, ThinkSys is a midsize custom software development firm. Their services include Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more. The agency is in Sunnyvale, California.Read More
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123$25,000+10 - 49 employeesSan Jose, CARead More
Based in San Jose, California, E8 Labs is a mobile app development company. The company provides mobile app development, custom software development, web development, e-commerce development, and more and is small.The company was founded in 2017.
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Enlightened MeditationIndustries
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124$10,000+10 - 49 employeesSanta Monica, CARead More
PhD Labs is a web and mobile app development company from Irvine, CA. The team of 10+ has been overcoming business challenges and driving results with digital solutions since 1998.
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Bank of AmericaIndustries
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125$100,000+10 - 49 employeesSan Diego, CARead More
Seamgen is a San Diego, Calif.-based development firm established in 2008. It has a team of about 50 that does mobile app development, web development, UI/UX design, and custom software development.
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MedImpact, -
126$10,000+2 - 9 employeesSacramento, CAAi-lab is a website development firm based in Sacramento, California and San Francisco, California. The small agency was founded in 2024. Their team provides Web Development, Mobile App Development, Generative AI, Artificial Intelligence, and more.Read More
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127$50,000+10 - 49 employeesIrvine, CARead More
Company A is a custom application development company based in Irvine, Calif., with offices in Plano, Texas, and Novi Sad, Serbia. The company, founded in 2015, has a team of more than ten that provides cloud consulting & SI, custom software development, web development, mobile app development, and enterprise app modernization services. Company A serves small and larger-sized companies in various industries, including IT, financial services, and health care & medical.
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128$5,000+50 - 249 employeesLos Angeles, CARead More
Futurealiti, an user experience design agency, was launched in 2016. The company focuses on ux/ui design, AR/VR development, content marketing, graphic design, and more and has a midsize team.
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129$25,000+10 - 49 employeesFresno, CARead More
Founded in 2008, Bixly is a mobile app and web development company based in Fresno, Calif. The team of 27 work with small and midmarket companies in the financial services, health care, and marketing industries.
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GoogleIndustries
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130$10,000+50 - 249 employeesTorrance, CAHangingPanda PVT LTD, an app development firm, is headquartered in Torrance, California and Noida, India. The midsize team specializes in Mobile App Development, Web Development, Artificial Intelligence, Custom Software Development, and more and was launched in 2021.Read More
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131$50,000+10 - 49 employeesIrvine, CASunvera Software is a small mobile application development firm. Located in Irvine, California, the firm was launched in 2013. Their services include Mobile App Development, Artificial Intelligence, and AI Consulting.Read More
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LanesLA.orgIndustries
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132$10,000+10 - 49 employeesSan Francisco, CANova Era Agency, a web design agency, is located in San Francisco, California. The small team offers Web Design, Web Development, UX/UI Design, Artificial Intelligence, and more. The company was founded in 2025.Read More
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133$10,000+50 - 249 employeesLos Angeles, CARead More
In Los Angeles, California; Houston, Texas and Santa Rosa, California, Coding Pixel is a small custom software development firm. They focus on custom software development, blockchain, mobile app development, web design, and more and were established in 2012.
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134$10,000+2 - 9 employeesSan Diego, CARead More
Launched in 2017, PlatformXR is an AR/VR development company. Their small team is in San Diego, California and Portland, Oregon. Their team focuses on AR/VR development, Mobile App Development, Artificial Intelligence, and Web Design.
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Kaiser PermanenteIndustries
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135Undisclosed10 - 49 employeesSan Francisco, CARead More
Established in 2000, Marker Seven is a full-service digital agency. They employ a team of 20 people across multiple offices in San Francisco, Richmond, Va. and Victoria, Canada. Their range of services includes web design, web development, UX/UI design, e-commerce development, mobile app development.
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AT&TIndustries
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136$5,000+2 - 9 employeesGlendale, CASytepoint, Inc. Is a Los Angeles, California-based app development company. Founded in 2008, the small team offers mobile app development, web development, ux/ui design, branding, and more.Read More
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137Undisclosed10 - 49 employeesSan Francisco, CARead More
Extractable is a San Francisco based boutique digital strategy and experience design firm. Founded in 1999, the company employs a team of 24. Extractable offers UX/UI design, digital strategy, web design, web development, content marketing, and mobile app development. Their client base primarily includes large enterprise and mid-size companies.
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Extractable's client base spans the financial servicesIndustries
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138$25,000+10 - 49 employeesSan Francisco, CARead More
Yeti LLC is a software development and design company founded in 2010. They have 20 employees, all of whom work out of an office in San Francisco. Yeti's practice is extensive for a firm of its size; they offer custom software development, UI/UX design, mobile apps, and IoT development.
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GoogleIndustries
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139$100,000+2 - 9 employeesCoronado, CARead More
Ecliptic Ideas is a Coronado, California-based software development company. Launched in 2019, the small team provides custom software development and mobile app development.
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140Undisclosed50 - 249 employeesSanta Monica, CARead More
Nextware Technologies is a development agency based in Santa Monica, Calif., with another office in Valencia, Spain. Since 2006, the agency and its team of fewer than 10 have provided expertise in web, custom software, and mobile app development, web design, UX/UI design, and IT managed services.
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LandorIndustries
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141$5,000+1,000 - 9,999 employeesSan Jose, CARead More
ExpertsFromIndia is a development company based in San Jose, Calif. They were founded in 2003 and have a team of around 800 employees. They primarily provide custom software development and SEO.
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eBayIndustries
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142$50,000+10 - 49 employeesSan Diego, CARead More
Achieve Internet is a software development company that's headquartered in San Diego; they have another office in Los Angeles. Founded in 2002, Achieve Internet does web development, enterprise content management, sales intelligence, enterprise app modernization, CRM consulting, and e-commerce development. Clients are mostly midmarket companies and in the healthcare and arts and entertainment sectors. They have about 41 employees.
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DexcomIndustries
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143$10,000+10 - 49 employeesDelano, CARead More
iOPTIME is a Salesforce consultancy and web & mobile solutions company based in Islamabad, Pakistan. The company, founded in 2012, has a team of more than ten that provides CRM consulting & SI, mobile app development, IoT development, web development, and AI services. iOPTIME serves small and mid-market companies in the IT; consumer products & services; health care & medical; education; and GPS, navigation, & GIS industries.
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TELUS CommuncationsIndustries
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144$10,000+2 - 9 employeesPasadena, CARead More
Interactivism is a digital product design and development company founded in 2013. Based in Pasadena, Calif., the team of 8 specializes in UX/UI design, custom software development, and AR/VR development.
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From early stage to fortune 500, we are proud of the company we keep.Industries
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145$25,000+250 - 999 employeesSan Jose, CAAppsters is a mobile application development firm based in San Jose, California. The midsize agency was launched in 2010. Their team specializes in Mobile App Development, Blockchain, and Artificial Intelligence.Read More
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146$10,000+10 - 49 employeesCupertino, CARead More
Poppins Labs is an UX design company. In Cupertino, California, their small team provides UX/UI Design, IT staff augmentation, Mobile App Development, Artificial Intelligence, and more. The agency was founded in 2024.
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147$5,000+2 - 9 employeesMission Viejo, CARead More
Calibec is a small custom software development firm. Founded in 2021, the team offers custom software development, web development, mobile app development, enterprise app modernization, and more. The agency is located in Mission Viejo, California.
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148$5,000+1,000 - 9,999 employeesSan Francisco, CARead More
Established in 2011, AppTecHub is a large mobile application development company. Their team offers mobile app development, web development, and custom software development. The agency is located in San Francisco, California.
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149$50,000+10 - 49 employeesRocklin, CARead More
Grey Sky Media is a web and technology development company based in Rocklin, California. Founded in 1999, their team of fewer than 10 employees provides services for small and mid-market businesses. They specialize in web development, custom software development, UX/UI design, and enterprise app modernization.
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150$10,000+2 - 9 employeesLos Angeles, CARead More
InfiniOne is a software development agency that has been offering mobile app development, custom software development, and web development services to their clients in the financial services, business services, and e-commerce industries since 2012. Their team of 10 employees are based out of their offices in Los Angeles, Beverly Hills, Calif., and Liberty, Pakistan.
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SkinnygirlIndustries
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