Best US Cross-Platform App Development Companies

4 Companies - Rankings updated: September 04, 2026

Every agency on DesignRush meets evaluation criteria around expertise and client feedback to empower informed choices. Some listings include paid partnerships.

United States × Cross-Platform Mobile App Development × Boutique × $10,000 - $25,000 × Clear Filters
  • Native | Hybrid | IOS & Android Mobile App Development

    NewAgeSys IT, Top Mobile App Development Company in NJ, provide mobile app development services to various vertical such as Healthcare, Fitness, Social & Networking, Sports, Education, Utility, On Demand Services etc. We take care of Mobile App UI/UX Design & Development, API & Back-end Programming...

    Top Services:

    • Mobile App Development
    • Web Development
    • Software Development
    • Web Design
    • ERP Consulting
    • Show more
    Location
    Princeton, New Jersey
    Number of Employees
    250 - 499
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    21 Projects Listed

    NewAgeSysIT Services

    • Mobile App Development
    • Web Development
    • Software Development
    • Web Design
    • ERP Consulting
    • AI Development
    • Cloud Consulting
    • eCommerce Development
    • DevOps Consulting
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • ISRA
    • WhipFlip
    • Foogly Foods
    • Zen For Teens
    • Moly
    • H8 M8 D8
    • Flash Ads
    • Local IL
    • Safety 24 Our
    • CosMediCenter
    Data sourced from the agency's DesignRush profile

    NewAgeSysIT Reviews & Testimonials

    • Luz Angela Zidziunas
      Luz Angela Zidziunas Founder at AwareMe
      5.0

      Mobile App Development Review from Luz Angela Zidziunas

      From the beginning they were excellent at helping me bring my ideas to life, paying attention to all the details I wanted to incorporate in the app and also giving me their ideas and suggestions.

    • David Chabukashvili
      David Chabukashvili Founder at L-Card App
      5.0

      Mobile App Development Review from David Chabukashvili

      They delivered everything on time and it was of great quality. They go above and beyond to meet your requirements and deliver the product you are looking for.

    • LARRY SEIBEL
      LARRY SEIBEL Founder at CAR-UP APP
      5.0

      Mobile App Development Review from LARRY SEIBEL

      They are very knowledgeable in the sense that they have built so many of these types of applications that they always deliver on time. Exceptional service!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Top Global Mobile Development Studio

    We are Horus Studio, a Global Mobile Development Studio passionate about creating cutting-edge apps using .NET MAUI, Flutter and Uno Platform...

    Top Services:

    • Mobile App Development
    • Software Development
    • IoT
    • UI/UX Design
    • Product Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    9 Projects Listed

    Horus Services

    • Mobile App Development
    • Software Development
    • IoT
    • UI/UX Design
    • Product Design
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Swedlock
    • Farmashop
    • Innomind
    • Uno Platform
    • PowerPlus
    • Sweatworks
    • VBC Finders
    • 365 ID
    • UxDivers
    • MyPass
    Data sourced from the agency's DesignRush profile
  • Creative by Nature, Digital by Design.

    Appnova is a full-service creative design agency with 20 years of experience in creative, eCommerce and digital projects. Based in London, New York & Rome, we create tailored solutions and deliver inspiring digital experiences to build brands...

    Top Services:

    • eCommerce Development
    • Web Design
    • Web Development
    • UI/UX Design
    • Digital Marketing
    • Show more
    Location
    New York City, New York
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    5 Projects Listed

    Appnova Services

    • eCommerce Development
    • Web Design
    • Web Development
    • UI/UX Design
    • Digital Marketing
    • Product Design
    • Content Marketing
    • Branding
    • Mobile App Development
    • Digital Strategy
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Knorr
    • Browns Bride
    • Joseph
    • IIUVO
    • Miller Harris
    • Monilo
    • McIntosh Laboratory
    • Amy Henley
    Data sourced from the agency's DesignRush profile

    Appnova Reviews & Testimonials

    • Julia F
      Julia F Review from Google
      1.0

      Julia F's Review Sourced from Google

      Charged us 12k for a 'custom' shopify when it was actually just a template adaptation. Illegally displaying our latest campaign images and intellectual property on their website for commercial purposes, despite this job being 5 years ago.

    • Deantr
      Deantr Review from Google
      5.0

      Deantr's Review Sourced from Google

      I recently got in touch with Appnova to develop a luxury eCommerce website for my startup. Their team really took the time to understand the nuances of my business, which I really appreciated. I'm excited to continue working with them on future projects. Highly recommend Appnova if you're looking for fashion eCommerce website development services.

    • Lucy
      Lucy Review from Google
      5.0

      Lucy's Review Sourced from Google

      Being in the fashion industry, it was paramount to find a digital partner who could match our vibrancy and creativity. We found it in Appnova. Our new eCommerce site looks incredible. It packs a powerful punch visibly while being highly functional and easy for our customers to navigate. They integrated a variety of payment options too, which is perfect for our diverse client base. We’re now working on a marketing strategy to further elevate our fashion brand online. I wish we could keep Appnova just for ourselves! The team is great to work with, and they constantly exceed our expectations.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Grow with Technology.

    We have a Team of 100+ Skilled App Developers who thrive on rolling up their sleeves and solving your IT problems and meeting your business needs like APP Development, Software Development, Cloud Consulting, Generative AI Development, Cyber Security Services, Custom ERP Software Development, and Web...

    Top Services:

    • AI Development
    • Mobile App Development
    • Software Development
    • Blockchain
    • Software Testing
    • Show more
    Location
    Irvine, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000

    NextOlive Services

    • AI Development
    • Mobile App Development
    • Software Development
    • Blockchain
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • TrulyMadly
    • theDevMasters
    • OpusClip
    • DP World
    • Bettor In Green
    Data sourced from the agency's DesignRush profile

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