Best Cross-Platform App Development Companies in California

102 Companies-Rankings updated: October 19, 2026
Cross-Platform
Fintech
Budget
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Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

United States × California × Cross-Platform Mobile App Development × Fintech ×Clear Filters

  • Persistent

    See Beyond, Rise Above.

    Persistent Systems, a renowned global leader in software product development and technology services. Delve into our innovative offerings to stay ahead in the ever-evolving landscape of technology...

    Top Services:

    • AI Development
    • Software Development
    • Web Development
    • Mobile App Development
    • Blockchain
    • Show more
    Location
    Santa Clara, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    Visit WebsiteView Profile
    Google reviews(730)4.6

  • CONTUS Tech

    Your Digital Growth Success Partner.

    CONTUS Tech stands as a prominent global authority in digital engineering services, heralded for its transformative impact on businesses worldwide. Our forte lies in crafting cutting-edge digital products, pioneering connected vehicle experiences, and spearheading next-generation streaming services that...

    Top Services:

    • DevOps Consulting
    • IT Services
    • Mobile App Development
    • IoT
    • Digital Services
    • Show more
    Location
    Santa Clara, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $25,000 - $50,000
    Visit WebsiteView Profile
    Google reviews(314)4.0

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