Best Cross-Platform App Development Companies in California

5 Companies-Rankings updated: October 29, 2026
Cross-Platform
Manufacturing
$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 × Manufacturing × $25,000 - $50,000 ×Clear Filters

  • EffectiveSoft

    FUELING DISRUPTION

    App Development is at the heart of what we do. EffectiveSoft stands out because we turn your ideas into reliable digital products, supporting you from concept to launch and beyond. Our collaborative approach yields unmatched expertise in software, AI, and cloud solutions for your growth...

    Top Services:

    • Software Development
    • Mobile App Development
    • Big Data Analytics
    • AI Development
    • ERP Consulting
    • Show more
    Location
    San Diego, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    29 Projects Listed
    View Profile
    DesignRush verified(9)4.8

  • Robosoft Technologies

    Digital Consulting That Drives Business Innovation

    Robosoft Technologies is an experience engineering company trusted by large global enterprises, ambitious startups, and mid-size companies worldwide. Our mission is to simplify every aspect of digital life, from utility services to entertainment and productivity at work...

    Top Services:

    • Mobile App Development
    • UI/UX Design
    • Web Development
    • Software Testing
    • Software Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    16 Projects Listed
    View Profile
    DesignRush verified(4)4.7

  • 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

  • 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

  • L+R

    End-to-end digital product design and engineering.

    End-to-end digital product design and engineering for enterprises and premium brands...

    Top Services:

    • Branding
    • Mobile App Development
    • Software Development
    • AI Development
    • Design Services
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    4 Projects Listed
    View Profile
    Google reviews(8)5.0

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