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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1021$25,000+50 - 249 employeesMenlo Park, CARead More
Custom software development company Cambria Corporation was founded in 1984. The firm provides custom software development, mobile app development, web design, and web development and has a small team. The firm is headquartered in Menlo Park, California and Makati, Philippines.
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1022$1,000+2 - 9 employeesSan Francisco, CALaunched in 2015, CoreTeam.io is a software development company. Their services include Custom Software Development and Web Development.Read More
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1023Undisclosed10 - 49 employeesSan Jose, CARightapp4u is a Content Marketing company. Their small team of employees is in San Jose, California. Their team offers Content Marketing and Search Engine Optimization.Read More
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1024$1,000+Freelancer employeesLong Beach, CASmall SEO company ITECH AGENCY, is headquartered in Long Beach, California. Their services include Search Engine Optimization and Video Production.Read More
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1025$1,000+50 - 249 employeesSan Francisco, CAHygge Software is a midsize UX agency. Headquartered in Warszawa, Poland; Tallinn, Estonia; San Francisco, California and London, England, the firm was established in 2019. Their services include UX/UI Design, Custom Software Development, Web Development, Mobile App Development, and more.Read More
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HeatedIndustries
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1026$5,000+250 - 999 employeesSanta Monica, CABSS Commerce is an e-commerce development company established in 2012. Their midsize team is headquartered in Hanoi, Vietnam; Santa Monica, California; London, England and Singapore, Singapore. The company offers E-Commerce Development, Mobile App Development, IT strategy consulting, Web Design, and more.Read More
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1027Undisclosed50 - 249 employeesFremont, CASPIN Strategy is an Email Marketing company established in 2014. The company focuses on Email Marketing and Pay Per Click, and is midsize.Read More
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1028$10,000+50 - 249 employeesMountain View, CACloseloop Technologies is a custom software development company. Established in 2011, the midsize firm is in Mountain View, California; Sahibzada Ajit Singh Nagar, India and Jaipur, India. Their services include Custom Software Development, CRM consulting and SI, AI Consulting, ERP consulting and SI, and more.Read More
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Block and Tam AutoTech Consulting Group Motorola Solutions PIC CorporationIndustries
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1029Undisclosed50 - 249 employeesLake Forest, CASolitaire Infosys Inc, an user experience agency, is located in Lake Forest, California and Edmonton, Canada. The team provides UX/UI Design and E-Commerce Development.Read More
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1030$1,000+10 - 49 employeesIrvine, CAEstablished in 2014, Rebel Design Solution, a small SEO company, is in Irvine, California. Their team provides Search Engine Optimization and Web Design.Read More
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1031Undisclosed10 - 49 employeesPasadena, CAWeb design agency Upgrade Consulting focuses on Web Design and UX/UI Design. They were launched in 2023.Read More
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1032$1,000+10 - 49 employeesSan Mateo, CARead More
Digicorns Technologies, a UX agency, is based in San Mateo, California and Noida, India. The firm offers ux/ui design, social media marketing, search engine optimization, pay per click, and more and has a small team.The firm was established in 2019.
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1033$50,000+10 - 49 employeesGlendale, CAAgile Clouders, Inc. Is a software development firm. They are located in Glendale, California and Dombivli, India and have a small team. Their services include custom software development, web design, ux/ui design, product design, and more.Read More
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1034$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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1035$1,000+2 - 9 employeesMenifee, CATrapnstudio, a small AI Consulting company, is based in Menifee, California. The team offers AI Consulting and Custom Software Development.Read More
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1036$50,000+250 - 999 employeesSeattle, WALocated in Tallinn, Estonia; Kharkiv, Ukraine; Stuttgart, Germany and London, England, Jelvix is a software development company. The midsize agency was established in 2011. Their services include Custom Software Development, Mobile App Development, Artificial Intelligence, and cloud consulting & SI.Read More
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Tiber Capital GroupIndustries
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1037Undisclosed250 - 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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1038$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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1039$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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1040Undisclosed50 - 249 employeesFresno, CADesignix LLC is a Fresno, California-based social media marketing firm. The team offers Social Media Marketing and Search Engine Optimization.Read More
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1041$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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1042$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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1043$10,000+50 - 249 employeesKyiv, UkraineOVERCODE is a web development firm established in 2018. The agency specializes in Web Development, Mobile App Development, Web Design, UX/UI Design, and more and has a midsize team.Read More
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SignifAI (New Relic)Industries
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1044UndisclosedFreelancer 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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1045$10,000+50 - 249 employeesSan Jose, CARead More
WebMob Technologies is a full-service web, mobile, and custom software developer based in Ahmedabad, India with an office in San Jose, CA. Since 2010, this team of 10+ digital experts has provided end-to-end solutions for a wide range of verticals.
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USA Real estate brokerage firmsIndustries
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1046$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
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Life360 Sposor United Google Luxon PayIndustries
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1047$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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1048Undisclosed2 - 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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1049$5,000+250 - 999 employeesPalo Alto, CARead More
Founded in 2014, LITSLINK is a development company based in Kyiv, Ukraine with a satellite office in Kharkiv, Ukraine. With over 80 employees, LITSLINK provides web development, mobile app development and custom software development services. LITSLINK provides services to companies in the information technology, financial services and business services fields.
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Mush LimitedIndustries
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1050$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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