Best US Cross-Platform App Development Companies

109 Companies-Rankings updated: September 03, 2026

DesignRush vets all agencies based on professional qualifications and verified customer feedback to help you choose confidently. Some featured agencies maintain paid sponsorships.

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  • StephensCode LLC

    Custom-Built Fully Yours Veteran Owned

    Most dev shops bill hourly and hope projects drag on. We do the opposite. StephensCode is a Marine Corps veteran-owned web development company in Conroe, TX. We build custom websites, API integrations, and business automation all with flat-rate pricing. You know the exact cost before we start...

    Top Services:

    • Web Development
    • eCommerce Development
    • Branding
    • Digital Strategy
    • Web Design
    • Show more
    Location
    Conroe, Texas
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Visit WebsiteView Profile
    5.0 5.0 (1)

  • Bay Area Coders

    Strategy, design, engineering, and AI

    Bay Area Coders is a San Francisco-based product and engineering studio working with venture-backed startups and growth-stage companies since 2016. We combine strategy, design, engineering, and AI to help teams ship real products and modernize existing ones...

    Top Services:

    • Software Development
    • Web Development
    • Mobile App Development
    • AI Development
    • Design Services
    • Show more
    Location
    Roseville, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile

  • Source Code Lab

    Best Game Development Company in USA.

    Source Code Lab is the Best Custom Game Development Company in Usa/India.Our game developers build remarkable games compatible with the most popular platforms to attract the attention of a wider audience...

    Top Services:

    • Graphic Design
    • IT Services
    • VR/AR
    • Mobile App Development
    • Wearables
    • Show more
    Location
    San Francisco, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
    Visit WebsiteView Profile
    5.0 5.0 (8)

  • Nextbridge LTD

    Experience Is Everything

    Nextbridge LTD offers a robust portfolio of services, including IT strategy consulting, digital transformation, cloud migration, cybersecurity, data analytics, and custom software development. By harnessing advanced technologies like AI, machine learning, and blockchain, Nextbridge equips clients to optimize...

    Top Services:

    • AI Development
    • Mobile App Development
    • Staff Augmentation
    • Web Development
    • PPC
    • Show more
    Location
    Irving, Texas
    Number of Employees
    500 - 999
    Average Hourly Rate
    $40/hr
    Portfolios Count
    2 Projects Listed
    Visit WebsiteView Profile
    4.5 4.5 (361)

  • Enspirit

    AI-Native Product Design and Engineering.

    Enspirit is an AI-native product design and engineering studio helping enterprises and funded startups build digital products that scale. We combine product design, full-stack engineering, AI development, and advisory services in a single team, enabling faster execution from strategy to launch...

    Top Services:

    • UI/UX Design
    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • AI Development
    • Show more
    Location
    Austin, Texas
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    5 Projects Listed
    Visit WebsiteView Profile
    4.3 4.3 (6)

  • FireBee Techno Services Pvt Ltd.

    Your Vision Is Our Mission

    Fire Bee Techno Services is an ISO-certified AI And Blockchain development company with a proven track record of 500+ successful projects. We are dedicated to turning innovative ideas into impactful solutions...

    Top Services:

    • Mobile App Development
    • Digital Marketing
    • Web Development
    • Graphic Design
    • Blockchain
    • Show more
    Location
    Fort Lauderdale, Florida
    Number of Employees
    250 - 499
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed
    Visit WebsiteView Profile

  • Tecoreng

    Software Development Company | Web, Mobile & Custom Solutions for Global Businesses

    Tecoreng is a results-driven software development company helping startups and enterprises build scalable web, mobile, and custom software solutions. We specialize in delivering high-performance applications for global clients, including the USA and UK...

    Top Services:

    • Software Development
    • Mobile App Development
    • Graphic Design
    • UI/UX Design
    • Digital Marketing
    • Show more
    Location
    Bronxville, New York
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed
    Visit WebsiteView Profile
    4.8 4.8 (29)

  • Budventure Technologies Pvt Ltd

    Build Bold. Grow Smart. Power Your Brand with Web, Mobile & AR/VR Solutions

    Custom solutions, personal touchwe deliver digital success with precision, passion, and performance-driven growth across industries!...

    Top Services:

    • Web Development
    • Mobile App Development
    • Digital Marketing
    • eCommerce Development
    • WordPress Website Design
    • Show more
    Location
    Edison, New Jersey
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed
    Visit WebsiteView Profile
    4.9 4.9 (116)

  • Agnito Technologies Pvt. Ltd.

    Empowering startups, enterprises, and iGaming ventures

    Agnito Technologies Pvt. Ltd. is a full-service IT and digital marketing company delivering innovative solutions in web & mobile app development, game development, and online growth strategies. From SEO and social media to cutting-edge software, we help businesses scale and succeed in the digital world...

    Top Services:

    • Web Design
    • eCommerce Development
    • Web Development
    • Digital Marketing
    • Mobile App Development
    • Show more
    Location
    Wilmington, Delaware
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $10,000 - $25,000
    Visit WebsiteView Profile

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