Best US Cross-Platform App Development Companies

65 Companies - Rankings updated: September 05, 2026

All agencies are evaluated on DesignRush for demonstrated expertise and authentic client reviews to support your decision. Certain placements are paid.

Cross-Platform
Fintech
$25,000 - $50,000
Sort by: Sponsored
United States × Cross-Platform Mobile App Development × Fintech × $25,000 - $50,000 × Clear Filters

  • Corpsoft

    Premium US and Europe located team delivering tech solutions

    Corpsoft.io is a seasoned team of Solution Architects, Web and Mobile Developers with over 10 years of experience. We have multiple Laravel (PHP and Custom PHP), JavaScript (React.js, Vue.js), and Flutter, Android and iOS development teams...

    Top Services:

    • Software Development
    • AI Development
    • Mobile App Development
    • Web Development
    • eCommerce Development
    • Show more
    Location
    Wilmington, Delaware
    Number of Employees
    100 - 249
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    9 Projects Listed
    Visit Website View Profile

  • Hooman Studio

    Design for Humans

    Hooman is a digital studio that blends bold ideas with beautiful, human-first design. We specialize in websites, apps, and brand experiences that feel simple, smart, and just right. Whether you're building from scratch or leveling up, we turn complex ideas into intuitive products people actually enjoy using...

    Top Services:

    • Mobile App Development
    • Branding
    • Web Design
    • Web Development
    • AI Development
    • Show more
    Location
    New York City, New York
    Number of Employees
    Under 49
    Average Hourly Rate
    $140/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    1 Project Listed
    Visit Website View Profile
    5.0 5.0 (36)

  • ContentActive, LLC

    Your Vision, Our Experts with Portal & Mobile Framework, Powerful Results!

    Why build from scratch! Our Portal, Mobile and AI framework provides 30-40% increased time to market. Built with Enterprise Security/Compliance for Azure/AWS clouds. ContentActive (Houston) provides Strategy, UI/UX, Web/Mobile/AI/Automation/IoT & DevOps. Your Vision, Our Experts, Powerful Results!...

    Top Services:

    • Software Development
    • Mobile App Development
    • AI Development
    • DevOps Consulting
    • Web Development
    • Show more
    Location
    Houston, Texas
    Number of Employees
    Under 49
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    4 Projects Listed
    Visit Website View Profile
    4.2 4.2 (5)

  • AccelOne

    Accelone Advancing What's Possible

    Embark on your digital transformation journey with AccelOne's Software Development delivery model, strategically designed for optimal outcomes. Initiate your digital transformation seamlessly through our comprehensive nearshore and US-based services...

    Top Services:

    • Software Development
    • Mobile App Development
    • Blockchain
    • UI/UX Design
    • eCommerce Development
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    100 - 249
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    5 Projects Listed
    Visit Website View Profile
    4.2 4.2 (5)

  • Ultrashield Technology

    Top Mobile App Development Company Powered by AI & Blockchain

    Ultrashield Technology is a top mobile app development company in INDIA, specializing in iOS, Android & cross-platform apps. With expertise in AI/ML, LLMs, and Blockchain, we deliver secure, scalable, and future-ready digital solutions trusted by startups and enterprises...

    Top Services:

    • Mobile App Development
    • AI Development
    • Software Development
    • Blockchain
    • Web Development
    • Show more
    Location
    New York City, New York
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    9 Projects Listed
    Visit Website View Profile
    4.3 4.3 (1)
    4.5 4.5 (13)

  • Synchronized Studio

    Full-service creative studio crafting unparalleled digital experiences.

    We are a full-service creative studio crafting unique digital experiences. We provide our partners with exceptional digital solutions that bring strategic value and make their businesses thrive...

    Top Services:

    • Web Design
    • Web Development
    • eCommerce Development
    • Digital Services
    • Design Services
    • Show more
    Location
    New York City, New York
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $25,000 - $50,000
    Visit Website View Profile

  • Incora

    Software Development by Diligent Minds

    We're a full-cycle development team helping businesses grow with tailored tech solutions. From early discovery all the way to product launch (and beyond), we're here to make sure your ideas turn into something real and useful...

    Top Services:

    • Software Development
    • Mobile App Development
    • Staff Augmentation
    • DevOps Consulting
    • AI Development
    • Show more
    Location
    Lewes, Delaware
    Number of Employees
    100 - 249
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $25,000 - $50,000
    Visit Website View Profile
    5.0 5.0 (17)

  • Softrizon LLC

    We Help You Build Your Software Projects Your Way.

    Expert software developers delivering top-tier web and mobile apps for startups and SMBs. With diverse industry experience spanning e-commerce, fintech, online dating, media, and travel, we bring a wealth of expertise to every project...

    Top Services:

    • Staff Augmentation
    • Mobile App Development
    • Software Development
    • Software Testing
    • Web Development
    • Show more
    Location
    St. Petersburg, Florida
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Visit Website View Profile

  • EnGenious

    Accelerating Software Innovation With AI-Native Engineering

    Engenious is an AI-native quality engineering partner helping startups and enterprise teams build and deploy software with confidence. We specialize in advanced QA automation, AI model validation, and mobile quality engineering, enabling organizations to accelerate release cycles while reducing risk. From...

    Top Services:

    • Mobile App Development
    • Web Development
    • AI Development
    Location
    Las Vegas, Nevada
    Number of Employees
    Under 49
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $25,000 - $50,000
    Visit Website View Profile

  • mejix

    Tailored digital products and brand UX design

    For two decades, our innovative digital products development agency has taken on a wide range of challenging IT services. We are masters at crafting custom software solutions and stunning web designs - anything from simple logo design to complex large-scale development projects! Let us help make your digital...

    Top Services:

    • Web Design
    • eCommerce Development
    • Web Development
    • Software Development
    • Mobile App Development
    • Show more
    Location
    New York City, New York
    Number of Employees
    100 - 249
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $25,000 - $50,000
    Visit Website View Profile
    5.0 5.0 (3)

  • Taction Software

    Global IT & Software Solution Company

    We have extensive global resources, deep industry, business process, and technological expertise, as well as a track record of producing uplifting success tales for businesses all over the world...

    Top Services:

    • Mobile App Development
    • Software Development
    • Software Testing
    • Wearables
    • CRM Consulting
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    100 - 249
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $25,000 - $50,000
    Visit Website View Profile
    5.0 5.0 (21)

  • Inventiple

    AI-Powered Engineering Gen AI & Agentic AI

    Inventiple builds production AI products, MCP servers, and startup MVPs for funded founders and enterprise teams. Delivered in 6-8 weeks by senior engineers averaging 10+ years experience. Fixed price, no juniors. Live products: Incu, Smart Stack Advisor, Hierk...

    Top Services:

    • Web Development
    • AI Development
    • Mobile App Development
    • Software Development
    • DevOps Consulting
    • Show more
    Location
    Houston, Texas
    Number of Employees
    Under 49
    Average Hourly Rate
    $120/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    3 Projects Listed
    Visit Website View Profile

  • 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 Website View Profile
    4.3 4.3 (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 Website View Profile
    4.0 4.0 (314)

  • Antino Labs

    Values by Convergence

    We are an AI Consulting and Digital Transformation company that follows a collaborative and data-driven approach to deliver high-quality technology solutions for global enterprises...

    Top Services:

    • Web Design
    • Mobile App Development
    • Software Development
    • Product Design
    • Graphic Design
    • Show more
    Location
    Lewes, Delaware
    Number of Employees
    500 - 999
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Visit Website View Profile
    4.6 4.6 (68)

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