Top 100 Mobile App Developers in California
The Best of July 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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301Undisclosed10 - 49 employeesSan Francisco, CASocial media marketing firm Clymin is in Hyderabad, India. The small firm was launched in 2023. Their services include social media marketing, BI & big data consulting & SI, custom software development, web development, and more.Read More
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302$25,000+10 - 49 employeesWest Hollywood, CARead More
Varfaj builds mobile apps and E-Commerce experiences for bluechip startups and world-class companies such as Mark Cuban Companies, JLo Beauty, and Olaplex. Our team specializes in taking ideas from UX conceptualization through UI design to development and post-launch support. Since inception in 2018, Varfaj has reshaped the agency world by developing over 100 projects, becoming a Shopify Plus Partner, and being named a Top 1000 Global Company in 2022.
Our services:
- Product Ideation: Scoping Sessions, Product Development Process, MVP Definition
- Product Design: UX/UI Design, Prototyping
- Product Development: iOS and Android Development, Web, and Backend Development
- Product Improvement: Code Audit, UX Audit, Ongoing Maintenance
Our tech stack:
- Front & Back End: React, Vue.js, Next.JS, Node, Python, Rails, Django
- Mobile: React Native, Flutter
- Systems: AWS, Heroku, Firebase, Netlify, Contentful, Stream, Sendgrid
Why us?
- Highly Process Oriented. We implement our battle-tested processes and empower you with comprehensive statements of processes.
- Technical Excellency. Our agile engineering team draws on experience from Coinbase, Sophialabs, Metamask, and more. This ensures that your project is developed by best in class engineers.
- Full Transparency. We pride ourselves on providing clear, transparent communication. Our project managers leverage shared Slack, Asana, Gantt, and Dropbox instances so that you know exactly where your project is at any time.
- Partner & Advisor. We are a true partner you can rely on. You can expect us to bring the same level of strategy and energy that you bring to your business.
Clients
JLo BeautyIndustries
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303$1,000+10 - 49 employeesMontebello, CASmall SEO company SEO Reforms, is headquartered in Faisalabad, Pakistan and Montebello, California. Established in 2020, the team provides Search Engine Optimization, Social Media Marketing, Web Development, Content Marketing, and more.Read More
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304$1,000+50 - 249 employeesEmeryville, CAWeb development firm The Website Designs was founded in 2009. The company focuses on Web Development, Mobile App Development, Web Design, Custom Software Development, and more and has a midsize team. The company is in Emeryville, California.Read More
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305$10,000+10 - 49 employeesIrvine, CADevise Interactive is a software development firm established in 2014. Their team offers Custom Software Development and UX/UI Design.Read More
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306$10,000+2 - 9 employeesLos Angeles, CAHyperkinetic Studios is an Other Application Development company. The team offers Other Application Development and IT strategy consulting and is based in Los Angeles, California.Read More
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307$1,000+10 - 49 employeesSan Jose, CAHeadquartered in San Jose, California, AppStealth is a small mobile application development company. Their services include Mobile App Development and Custom Software Development.Read More
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308$1,000+250 - 999 employeesBakersfield, CAPacific Logo Designs is a web design company headquartered in Bakersfield, California. The midsize company was launched in 1994. Their team provides web design, logo, search engine optimization, and mobile app development.Read More
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309$1,000+50 - 249 employeesSan Mateo, CAFounded in 2018, PieCyfer is a Generative AI company. The team specializes in Generative AI and IT staff augmentation.Read More
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310$1,000+10 - 49 employeesSacramento, CABased in Sacramento, California, Geekybugs is an user experience design company. They specialize in UX/UI Design and ERP consulting and SI and were founded in 2018.Read More
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311$10,000+10 - 49 employeesLos Angeles, CAE-commerce development firm Dimension Software is based in Los Angeles, California. Established in 1998, the team focuses on E-Commerce Development and Mobile App Development.Read More
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312$10,000+50 - 249 employeesWalnut Creek, CAMEV, a software development company, is in Walnut Creek, California. The team offers Custom Software Development and Mobile App Development.Read More
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313$5,000+10 - 49 employeesSan Jose, CAAppCode Technologies is a website development firm in Faridabad, India and San Jose, California. Founded in 2016, the team focuses on Web Development and Mobile App Development.Read More
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314$5,000+10 - 49 employeesSacramento, CAWebsite development company Rocket Systems was founded in 2018. The firm provides Web Development, Mobile App Development, E-Commerce Development, Custom Software Development, and more and has a small team. The firm is located in Sacramento, California and Yerevan, Armenia.Read More
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315$5,000+10 - 49 employeesLos Angeles, CANS5 | Software Development Company is a software development company launched in 1999. The firm offers Custom Software Development and Web Development.Read More
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316$5,000+10 - 49 employeesLos Angeles, CADream Warrior Group is a custom software development company. Their team is based in Los Angeles, California and provides Custom Software Development and Conversion Optimization.Read More
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Disney ChannelIndustries
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317$5,000+10 - 49 employeesSan Francisco, CALaunched in 2011, Nitid Bit is a website development firm. The team offers Web Development and Mobile App Development and is based in San Francisco, California.Read More
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318$10,000+2 - 9 employeesMountain View, CAHeadquartered in San Isidro, Argentina and Mountain View, California, Purple Bunny is a small branding company. Established in 2012, the team provides Branding, Web Design, Product Design, Web Development, and more.Read More
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319Undisclosed250 - 999 employeesIrvine, CALaunched in 2018, ThinkAiCorp, a midsize big data analytics company, is in Irvine, California. Their team specializes in BI & big data consulting & SI and Mobile App Development.Read More
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320$25,000+2 - 9 employeesThousand Oaks, CABuena Digital is a custom software development firm. The team provides Custom Software Development and Mobile App Development, and the agency is based in Thousand Oaks, California.Read More
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TaxAuditIndustries
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321$10,000+2 - 9 employeesSan Francisco, CAFounded in 2018, SideLabs is a small mobile application development company. Their team focuses on Mobile App Development and Other Application Development.Read More
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322$5,000+2 - 9 employeesSan Diego, CAApplication development firm devAtelier offers Mobile App Development and Web Development. They are located in San Diego, California.Read More
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323$1,000+50 - 249 employeesSacramento, CALaunched in 2018, Technupur is a midsize custom software development company. Their services include Custom Software Development and BI & big data consulting & SI.Read More
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324$10,000+50 - 249 employeesSunnyvale, CAUpTeam is a Sunnyvale, California-based IT staff augmentation company. They specialize in IT staff augmentation and Web Development and were established in 2012.Read More
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325$100,000+250 - 999 employeesLos Angeles, CADeutsch LA is a Los Angeles, California-based website development firm. The team offers Web Development and E-Commerce Development.Read More
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326$5,000+2 - 9 employeesLong Beach, CAOS Ignite, Inc. Is an app development company. The firm is in Long Beach, California and Costa Mesa, California. Their services include Mobile App Development and Custom Software Development.Read More
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327$25,000+10 - 49 employeesSan Jose, CARead More
Crea is a software development company. They offer custom software development, mobile app development, and api development and were launched in 2017. Their small team is San Jose, California-based.
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328$10,000+50 - 249 employeesFremont, CARadiansys Inc is a midsize artificial intelligence development company launched in 2007. Their team focuses on Artificial Intelligence, AI Consulting, AI Agents, Generative AI, and more. The company is in Gurugram, India and Fremont, California.Read More
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329Undisclosed50 - 249 employeesSan Jose, CAEike Consulting is a software development company. Their team is in San Jose, California and provides Custom Software Development and Mobile App Development.Read More
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330Undisclosed50 - 249 employeesSan Francisco, CARead More
ClearScale is a cloud-native systems integration, strategic consulting, and application development company founded in San Francisco with over 50 employees. They provide custom software development, mobile app development, and big data consulting services.
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