Best Cross-Platform App Development Companies in California

4 Companies-Rankings updated: October 24, 2026
Cross-Platform
Construction
$25,000 - $50,000
Sort by: Sponsored

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 × Construction × $25,000 - $50,000 ×Clear Filters

  • Diffco

    Your trusted AI software development partner

    Diffco offers solutions that transform ideas into dynamic digital experiences. Precision and creativity combine seamlessly in our mobile innovation and software crafting solutions, delivering intuitive interfaces and robust functionality that elevate user engagement and business growth...

    Top Services:

    • AI Development
    • Software Development
    • Staff Augmentation
    • Mobile App Development
    • Web Development
    • Show more
    Location
    San Jose, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $110/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    31 Projects Listed
    View Profile
    DesignRush verified(35)5.0
    Google reviews(26)5.0

  • Altoros Labs

    Trusted IT Partner for SMBs & Enterprises Since 2001 | Dedicated Teams | Industry-Specific Solutions

    Altoros is a 350+ person strong IT consulting and development group. For over 20 years, we've been assisting Global 2000 organizations in getting software products to market faster and reducing the cost of R&D experiments to enable stable business growth...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Design
    • Web Development
    • Staff Augmentation
    • Show more
    Location
    Pleasanton, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    12 Projects Listed
    View Profile
    DesignRush verified(4)4.4
    Google reviews(1)5.0

  • Pace Digitals

    Affordable & Creative Design Company

    Pace Digital is a cutting-edge digital marketing agency offering innovative solutions for businesses. With expertise in SEO, social media marketing, web design, and more, we help clients optimize their online presence and drive targeted traffic. Our team of experts utilizers data-driven strategies to deliver...

    Top Services:

    • Web Development
    • Mobile App Development
    • Web Design
    • eCommerce Development
    • Branding
    • Show more
    Location
    Oakland, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $70/hr
    Minimal Budget
    $25,000 - $50,000
    View Profile
    DesignRush verified(3)4.6
    Google reviews(1)1.0

  • VentureDive

    Engineering Intelligent & Scalable Solutions.

    VentureDive is an award-winning custom software development company dedicated to spearheading digital transformations for Fortune 500 companies across BFSI, CPG/retail, healthcare, transportation, logistics, and QSR industries through its expertise in the realms of Fintech, Data & AI, HealthTech, PropTech...

    Top Services:

    • AI Development
    • Software Testing
    • Software Development
    • Mobile App Development
    • Big Data Analytics
    • Show more
    Location
    Mountain View, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    View Profile

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Popular Services

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