Searching for a top-rated application modernization services company to future-proof your business? Our directory provides industry-leading experts specializing in transforming legacy systems. With insights from verified client experiences and success stories, we make it easy for you to compare options based on location, budget, and hourly rates to find your next agency partner. 

Best App Modernization Services Agencies

3 Companies-Rankings updated: September 04, 2026

All mobile app development firms on DesignRush have been assessed for their expertise, portfolio, and verified client reviews. Some listings may be paid.

Application Modernization
Fashion
$50,000 & Up
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  • Sports Betting Soft

    Sports Betting Software Development Company | Sports Betting Solution

    Sports Betting Soft is a leading iGaming technology provider delivering tailored sports betting and casino software solutions for both startups and established operators. We specialize in building innovative, reliable, and high-performance platforms designed to meet unique client needs and exceed in...

    Top Services:

    • Mobile App Development
    • Graphic Design
    • eCommerce Development
    • Web Development
    • Blockchain
    • Show more
    Location
    Borehamwood, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    10 Projects Listed

    Sports Betting Soft Services

    • Mobile App Development
    • Graphic Design
    • eCommerce Development
    • Web Development
    • Blockchain
    • Software Development
    • Staff Augmentation
    • IT Services
    • Software Testing
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • BET IT BEST
    • EAGLE BET
    • BetMonkey
    • Land-Mark-Co
    • MyHss
    • VMV
    • WSB
    • DBB
    • JARLON GROUP
    • FLYBET
    Data sourced from the agency's DesignRush profile

    Sports Betting Soft Reviews & Testimonials

    • Kundan B
      Kundan B COO at Bet Monkey
      4.8★

      Web Development Review from Kundan B

      Had an Awesome Experience with the team at SBS. After Fiverr and Freelancer.com bad experience I got my product ready with Sports Betting Soft. and Special thanks to the team for the friendly support after launch.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit WebsiteView Profile
    4.2 4.2 (1)

  • Rebbix

    Your product engineering ally.

    Rebbix proves that results-oriented outsourcing without bullshit and sugar coating is possible.We provide highly effective engineering teams as a service. Since 2012, weve been helping online marketplaces scale to different markets, transform from classifieds to transactional, launch, pivot, and find...

    Top Services:

    • Software Development
    • Mobile App Development
    • Staff Augmentation
    • UI/UX Design
    • IoT
    • Show more
    Location
    Lviv, Ukraine
    Number of Employees
    50 - 99
    Average Hourly Rate
    $65/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    4 Projects Listed

    Rebbix Services

    • Software Development
    • Mobile App Development
    • Staff Augmentation
    • UI/UX Design
    • IoT
    • Software Testing
    • DevOps Consulting
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • OLX Group
    • Fixly
    • Day.io
    • Dreamlines
    • modnaKasta
    • Belvilla
    • Mozilla
    • MDC Indústria de Containers Inteligêntes
    • Investing
    Data sourced from the agency's DesignRush profile

    Rebbix Reviews & Testimonials

    • Ivan Yarych
      Ivan Yarych Review from Google
      5.0★

      Ivan Yarych's Review Sourced from Google

      A very comfortable company to work for - thanks to the people who work here and the well-thought-out workspace.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit WebsiteView Profile
    4.9 4.9 (50)

  • Tech Formation

    From Concept to Cloud We Build What Drives Growth

    Tech Formation is a premium software development company helping U.S. startups and enterprises build innovative SaaS, AI, and custom software solutions. With a focus on scalability, security, and user experience, we turn complex ideas into powerful digital products that drive business growth. From concept to...

    Top Services:

    • Software Development
    • Web Design
    • eCommerce Development
    • Web Development
    • Mobile App Development
    • Show more
    Location
    Ludhiana, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    1 Project Listed

    Tech Formation Services

    • Software Development
    • Web Design
    • eCommerce Development
    • Web Development
    • Mobile App Development
    • UI/UX Design
    • WordPress Website Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Stephen Murphy
    • Vincent Maneno
    • Hope Devanport
    • Kathryn Farr
    • Tony Antoniou
    • Debi Behunin
    Data sourced from the agency's DesignRush profile

    Tech Formation Reviews & Testimonials

    • Sandeep
      Sandeep Review from Google
      5.0★

      Sandeep's Review Sourced from Google

      Had a great experience working with Tech Formation. The team is professional, skilled, and very responsive throughout the development process. They delivered exactly what was promised and on time. Highly recommend them if you're looking for reliable software development services.

    • Harpreet Kaur
      Harpreet Kaur Review from Google
      5.0★

      Harpreet Kaur's Review Sourced from Google

      Tech Formation has been an amazing experience! The company fosters a collaborative and innovative work culture, provides excellent opportunities for professional growth📈, and truly values its employees. Management is supportive, and the work-life balance is great. I feel lucky to be part of such a dynamic and forward-thinking team!🌟

    • Amar Kumar
      Amar Kumar Review from Google
      5.0★

      Amar Kumar's Review Sourced from Google

      Tech Formation is an inventive IT firm that prioritises efficiency and quality while providing state-of-the-art solutions. Their skilled staff guarantees top-notch service catered to the requirements of the client.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit WebsiteView Profile
    4.7 4.7 (46)

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Why People Trust DesignRush

Rated 4.8 on Google and 4.7 on Trustpilot, DesignRush Agency Directory is a reliable resource for finding application modernization services companies. We owe this to our executive selection team, which follows a strict screening process when featuring agencies on the platform, assessing key performance indicators, like portfolio, client reviews, and industry reputation.

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Learn more about DesignRush Agency Ranking Methodology.

Sources

DesignRush sustains a directory of over 30,000 agencies categorized by service category, location, expertise, and reviews. We build our database in two ways:

  • Our dedicated team of agency experts actively searches the web for top-performing companies. We then pull information from their websites, online presence, and client testimonials to verify their status and qualifications prior to listing.
  • The agencies listed get notified of their profiles on the website and they can choose to claim it or not, which suggests their availability for more collaborations.

Agencies can also reach out to DesignRush and must go through the verification process prior to being listed.

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