Our expert analysts identified the leading mobile app developers in California that create high-performance apps that engage and retain their user base. Filter listings by city, team size, cost of services and reviews to personalize your search. Choose the best partner for your brand and take advantage of these agencies' expertise and experience.

Best California Mobile App Developers

5 Companies - Rankings updated: September 05, 2026

All agencies on DesignRush undergo evaluation based on professional expertise and verified client reviews. Please note that certain placements are paid partnerships.

Expertise
Transportation & Logistics
$50,000 & Up
Sort by: Sponsored
United States × California × Transportation & Logistics × $50,000 & Up × Clear Filters

  • Infinum

    Solving complex problems with design and technology since 2005.

    Choosing Infinum ensures you partner with a mobile app development agency that transforms ideas into powerful digital solutions. Results-driven methods define our projects in user experience, scalable architecture, and seamless integration. Together, we accelerate growth and elevate your business operations...

    Top Services:

    • Web Development
    • Web Design
    • Mobile App Development
    • UI/UX Design
    • Software Development
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    250 - 499
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    24 Projects Listed

    Infinum Services

    • Web Development
    • Web Design
    • Mobile App Development
    • UI/UX Design
    • Software Development
    • Cloud Consulting
    • DevOps Consulting
    • Cybersecurity
    • Staff Augmentation
    • IoT
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Porsche
    • Nike
    • CITI
    • Royal Caribbean
    • Philips
    • Bayer
    • T-Mobile
    • P&G
    • Universal
    • Virgin Mobile
    Data sourced from the agency's DesignRush profile

    Infinum Reviews & Testimonials

    • Matic Debelak
      Matic Debelak Management Board Member at Modra zavarovalnica, d.d.
      5.0 ★

      Mobile App Development Review from Matic Debelak

      Workstream 1: research and product strategy Workstream 2: ETP release Technology : Vendor use Flutter framework, which allows one programming language and one codebase to create two different apps (for iOS and Android). Clearly defined roles and responsibilities, communication is clearly and respectfully, very effective project methodology, trying to understand every time how their activities fits into mission of Modra zavarovalnica, respect each member of team, etc.

    • Claus-Peter Mueller
      Claus-Peter Mueller Managing Director at NLB Lease&GO doo
      5.0 ★

      Software Development Review from Claus-Peter Mueller

      We have engaged Infinum to develop an app that would digitalise our leasing process. From creating the initial offer through the necessary financing application and client identification to the final signature – all the steps required to successfully lease a vehicle or other object can be performed in-app, freeing the users of friction and having to deal with tedious paperwork. The app itself in the background has 30+ integrations, while keeping a seamless and quick to follow process on the front for our users. That application is in production and Infinum is responsible for maintaining it and further improving. After the initial development, we have additionally expanded our scope from vehicles to other equipment. They have also developed a Leasing widget, product which enables quick financing model while purchasing a vehicle online on car seller marketplace pages. At this moment, we are still in partnership with Infinum, and their engagement is mainly focused on localising the app to other countries and supporting us in our further business expansion. The work performed was done in Ruby on Rails and React technology, with support of other services.

    • Anonymous VP of Marketing at SaaS Company
      5.0 ★

      Web Design Review from Anonymous

      Thanks to Infinum's website refresh, the client has seen an almost 100% improvement in their website's conversion rates. The team excels at project management, using the client's own proprietary tool and also Figma very well. Their proficiency in design, delivery, and client relations stands out.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.8 4.8 (9)
    4.8 4.8 (73)

  • JetRuby

    AI-Enabled Сustom Software Development

    We're JetRuby — AI-native, award-winning, and ISO-certified agency that's been shipping software since 2010. Our 250+ engineers turn bold ideas into production-ready products, starting from budgets of $50,000 and scaling all the way to enterprise roll-outs...

    Top Services:

    • Web Development
    • Software Development
    • Mobile App Development
    • Web Design
    • AI Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    33 Projects Listed

    JetRuby Services

    • Web Development
    • Software Development
    • Mobile App Development
    • Web Design
    • AI Development
    • IoT
    • IT Services
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Financial Times
    • Universum Global
    • Linksquares
    • Sortly
    • NameCoach
    • Anova
    • Osram
    • BackBase
    • Glowforge
    • CampusOptics
    Data sourced from the agency's DesignRush profile

    JetRuby Reviews & Testimonials

    • Artur OzieraÅ„ski
      Artur Ozierański Chief Executive Officer at Holdapp
      5.0 ★

      Mobile App Development Review from Artur Ozierański

      JetRuby provided staff augmentation services for us. developed a mobile app for a design platform. The team was responsible for implementing the backend server and admin panel, and frontend code. The team was made up of experienced developers that have great communication skills, which made resolving any issues or questions a breeze. JetRuby developers kept up-to-date with the latest technologies and trends in development and suggested updates and improvements to the application as needed.

    • Patrice Archer
      Patrice Archer Founder & CEO at Appy Ventures
      5.0 ★

      Web Design Review from Patrice Archer

      They developed a SaaS web platform with smart scheduling and automation tools for us at and built the platform's front- and backend and integrated a custom analytics dashboard and calendar integrations. But to be honest what impressed us most was how deeply they engaged with our vision. They didn't just write code they challenged assumptions, proposed better workflows, and contributed as if they were part of our internal product team. Their ability to think strategically and focus on user experience made them feel more like tech partners than a typical outsourced vendor.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.5 4.5 (2)

  • Pastilla

    For People. For Progress.

    Pastilla is a full-service agency based in Los Angeles. We partner with public agencies, nonprofits, and global brands to turn complex missions into clear brand and digital experiences that build trust and move communities to action...

    Top Services:

    • Branding
    • Design Services
    • Graphic Design
    • Web Design
    • Web Development
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $185/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    18 Projects Listed

    Pastilla Services

    • Branding
    • Design Services
    • Graphic Design
    • Web Design
    • Web Development
    • Mobile App Development
    • Digital Marketing
    • Social Media Marketing
    • Content Marketing
    • Video Production
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • City of LA Recreation & Parks
    • Black Girls Code
    • Sacramento Public Library
    • Consumer Technology Association
    • Clean Power Alliance
    • Microsoft
    • Metrolink
    • Hollywood Foreign Press Associations (HFPA)
    • Disney
    • Lossan
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile
    5.0 5.0 (3)

  • Blue Trail Software

    More Than Code We Build Trust Through Craft & Commitment

    Engineered with integrity. Backed by mentorship. Delivered with care. BTS transforms ideas into scalable, secure, and impactful digital products that deliver long-term value...

    Top Services:

    • Software Development
    • AI Development
    • Big Data Analytics
    • Mobile App Development
    • UI/UX Design
    • Show more
    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $55/hr
    Minimal Budget
    $50,000 & Up

    Blue Trail Software Services

    • Software Development
    • AI Development
    • Big Data Analytics
    • Mobile App Development
    • UI/UX Design
    • Cybersecurity
    • DevOps Consulting
    • Cloud Consulting
    • IT Services
    • IoT
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Samsung
    • Cartier
    • Axeptio
    • AxisCare
    • Compredict
    • Odia
    • Precision
    • Bearing AI
    • Collaborative Classroom
    • Certain
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • Mindera Software Craft

    AI That Transforms Businesses

    Mindera Software Craft specializes in crafting robust IoT solutions through high-performance, scalable software systems. From product development and performance testing to technology consultancy, we provide end-to-end services tailored to your needs...

    Top Services:

    • Software Development
    • Software Testing
    • IoT
    • DevOps Consulting
    • UI/UX Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up

    Mindera Software Craft Services

    • Software Development
    • Software Testing
    • IoT
    • DevOps Consulting
    • UI/UX Design
    • Mobile App Development
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Mitek - A Global Leader in Identity Verification
    • TVG - Online Horse Wagering
    • Net-A-Porter - Luxury Goods Marketplace
    • TUI Group - The World’s Leading Tourism Group
    • Not On The High Street Global Marketplace
    • Statful Telemetry SaaS
    • PlayerIndex - Sports Betting
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

Mobile App Development Companies in California by City

Related Services in California

Mobile App Development Specializations in California

Popular Services

Latest Trends Related to App Development

iPhone vs Android Statistics
App Development

iPhone vs. Android: 60+ Key Market Statistics Every Business Should Know

20,359
Mobile App Development AI Tools
App Development

I Tested the Top 5 Mobile App Development AI Tools: Here’s What Stood Out

38,801
No-Code App Builders
App Development

Top 5 No-Code App Builders Reviewed — Which One Came Out on Top?

26,967

Receive Free Proposals

For your project

1

Specify your budget, timeline and project requirements

2

Our experts curate a list of up to 5 most qualified candidate agencies

3

We connect you with them so you can choose the most suitable partner

Specify your requirements