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

6 Companies - Rankings updated: September 03, 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
Public Administration
$25,000 - $50,000
Sort by: Sponsored
Application Modernization Services × Public Administration × $25,000 - $50,000 × Clear Filters

  • Level Level

    Level up your web presence

    Level Level is a high-end WordPress agency from Rotterdam. We engineer complex, large-scale platforms for enterprise and public sector clients. No templates, no shortcuts. We deliver bespoke, secure solutions with an unwavering focus on accessibility (WCAG 2.2), performance, and clean code...

    Top Services:

    • WordPress Website Design
    • Web Development
    • Software Development
    • eCommerce Development
    • UI/UX Design
    • Show more
    Location
    Rotterdam, Netherlands
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    18 Projects Listed

    Level Level Services

    • WordPress Website Design
    • Web Development
    • Software Development
    • eCommerce Development
    • UI/UX Design
    • IT Compliance Solution
    • Web Design
    • Digital Strategy
    • SEO
    • Digital Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • FD Mediagroep
    • ICTU
    • IFFR (International Film Festival Rotterdam)
    • Discriminatie.nl
    • ABN AMRO
    • Business Insider
    • Cordaid International
    • Brussels Airport
    • Fietsersbond
    • Gemeente Almere
    Data sourced from the agency's DesignRush profile

    Level Level Reviews & Testimonials

    • Jarik Oosting
      Jarik Oosting Review from Google
      5.0 ★

      Jarik Oosting's Review Sourced from Google

      Very good WordPress agency. They do what they say and do not sell unnecessary things. Planning is realistic and budgets are also well worked with. Definitely recommended.

    • Nic. Oud Marketing
      Nic. Oud Marketing Review from Google
      5.0 ★

      Nic. Oud Marketing's Review Sourced from Google

      LevelLevel provided us with the right guidance during the construction of our new responsive website. Very satisfied with the delivery and excellent ranking results in a short time.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    5.0 5.0 (10)

  • Black Airplane

    Atlanta custom software, AI, product design, web and mobile development - 100% USA-based.

    Black Airplane turns consequential business problems into polished custom software. Our 30+ full-time, 100% USA-based strategists, product designers, and engineers deliver AI solutions, web platforms, and mobile apps used by more than 50 million people each month...

    Top Services:

    • Software Development
    • AI Development
    • UI/UX Design
    • Web Development
    • Mobile App Development
    • Show more
    Location
    Woodstock, Georgia
    Number of Employees
    Under 49
    Average Hourly Rate
    $250/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    3 Projects Listed

    Black Airplane Services

    • Software Development
    • AI Development
    • UI/UX Design
    • Web Development
    • Mobile App Development
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Coca-Cola
    • Chick-fil-A
    • The Home Depot
    • IHG
    • The Weather Channel
    • McDonald's
    • SeatGeek
    • Gas South
    • StoneLoads
    • reTHINK Group
    Data sourced from the agency's DesignRush profile

    Black Airplane Reviews & Testimonials

    • Shayne Forsyth
      Shayne Forsyth Review from Google
      5.0 ★

      Shayne Forsyth's Review Sourced from Google

      Black Airplane exceeded our expectations in delivering a top-tier website for TechnoMile. From the very beginning, their team demonstrated exceptional creativity and technical expertise. They approached the project with professionalism and clear communication, keeping us informed at every step. The end result is a visually stunning, high-performing site that reflects our identity and effectively supports our business goals. If you’re looking for a partner who can combine design excellence with virtually flawless execution, Black Airplane is the one to choose.

    • Ginger Jones
      Ginger Jones Review from Google
      5.0 ★

      Ginger Jones's Review Sourced from Google

      Black Airplane has been exceptional to work with! Their team delivered a seamless Stripe integration with impressive speed, ensuring we met our tight deadline. A special shoutout to April, whose responsiveness and dedication have been nothing short of outstanding. She’s truly amazing!

    • Richard Klosa
      Richard Klosa Review from Google
      5.0 ★

      Richard Klosa's Review Sourced from Google

      Top notch team working on a custom software development projects. I worked with Black Airplane (Brandon and David ) through an existing relationship they had with a company we purchased. Communication has been excellent. Both are very responsive and the resulting work has been excellent. Highly recommend.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.9 4.9 (27)

  • Amygdal

    Transforming Your Ideas into Innovative Software Solutions.

    Amygdal is a dynamic software agency specializing in creating innovative mobile and web applications for businesses across the EU, USA, and Gulf regions...

    Top Services:

    • Mobile App Development
    • Software Development
    • AI Development
    • DevOps Consulting
    • Cybersecurity
    • Show more
    Location
    Sarajevo, Bosnia and Herzegovina
    Number of Employees
    Under 49
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    1 Project Listed

    Amygdal Services

    • Mobile App Development
    • Software Development
    • AI Development
    • DevOps Consulting
    • Cybersecurity
    • CRM Consulting
    • ERP Consulting
    • Web Design
    • Business Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • A Place for Mom
    • History Channel
    • Volkswagen Group
    • Dorfleben
    • Visit Bratislava
    • Bratislava.sk
    Data sourced from the agency's DesignRush profile

    Amygdal Reviews & Testimonials

    • Kevin Coroneos
      Kevin Coroneos CEO at Investment Company Institute
      5.0 ★

      Mobile App Development Review from Kevin Coroneos

      AMYGDAL has been helping us with mobile app design and development for iOS and Android. They've helped us create everything from the ground up and have been with us every step of the way, from the ignition to now. AMYGDAL has helped us find ways to save time and money when it pertains to certain functionalities and offerings. They're very tight on timing and keep themselves to a high standard. They're very polite and understanding. Its been very eye-opening and refreshing to work with them. AMYGDAL is incredibly thoughtful and dedicated to whatever project they work on. They're not rigid at all; they're very comfortable to talk to and work with. For the time we've known AMYGDAL, they've never shown any place where they need to improve.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.3 4.3 (1)

  • Kickbyte Digital Solutions

    We are your Certified Umbraco Gold PartnerKickbyte is one of Canadas leading Umbraco agencies, with three of the four Umbraco Masters in the country on our team. We specialize in enterprise-grade Umbraco builds, custom integrations, and complex migration projects. Our teams deep technical expertise ensures...

    Top Services:

    • Web Design
    • UI/UX Design
    • Web Development
    • Email Marketing
    • Digital Services
    • Show more
    Location
    Edmonton, Canada
    Number of Employees
    Under 49
    Minimal Budget
    $25,000 - $50,000

    Kickbyte Digital Solutions Services

    • Web Design
    • UI/UX Design
    • Web Development
    • Email Marketing
    • Digital Services
    • Graphic Design
    • Branding
    • Big Data Analytics
    • Digital Strategy
    • Design Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Canadian Western Bank
    • Government of Saskatchewan
    • University of Regina
    • Alberta Association for Migration Studies
    • Alberta Distance Learning Centre (ADLC)
    Data sourced from the agency's DesignRush profile

    Kickbyte Digital Solutions Reviews & Testimonials

    • Rene Pierno
      Rene Pierno Review from Google
      5.0 ★

      Rene Pierno's Review Sourced from Google

      Kickbyte is awesome at this whole marketing thing! … especially in terms of digital growth for businesses … Thank you Bhavya for your kindness help and guidance … Kickbyte has a team that really wants to meet business needs and to get the job done…

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    5.0 5.0 (5)

  • 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

    ContentActive, LLC Services

    • Software Development
    • Mobile App Development
    • AI Development
    • DevOps Consulting
    • Web Development
    • IoT
    • Big Data Analytics
    • ERP Consulting
    • UI/UX Design
    • Digital Strategy
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • AEI Energy
    • Abitibi-Consolidated
    • American Medical Writers Association
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile
    4.2 4.2 (5)

  • soxes AG

    Services For Your Business Success

    With 20+ years of experience in complex custom software development projects, we are a reliable Swiss partner for software innovation. Our mission is supporting our customers with innovative solutions that set them apart from the average. We help companies strengthen their uniqueness and fully integrate their...

    Top Services:

    • Mobile App Development
    • Digital Strategy
    • UI/UX Design
    • eCommerce Development
    • Web Design
    • Show more
    Location
    Bubikon, Switzerland
    Number of Employees
    100 - 249
    Average Hourly Rate
    $120/hr
    Minimal Budget
    $25,000 - $50,000

    soxes AG Services

    • Mobile App Development
    • Digital Strategy
    • UI/UX Design
    • eCommerce Development
    • Web Design
    • Software Development
    • AI Development
    • IoT
    • Cloud Consulting
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • getAbstract
    • Stadler
    • Zurich
    • Electrolux
    • Sulzer
    • Glencore
    • Rieter
    • Emmi
    • Canon
    • UBS
    Data sourced from the agency's DesignRush profile

    soxes AG Reviews & Testimonials

    • Lucia Stöckli
      Lucia Stöckli Review from Google
      5.0 ★

      Lucia Stöckli's Review Sourced from Google

      We received very friendly advice. The advice given could potentially save us a lot of money and time. We particularly appreciated that Soxes wasn't primarily focused on sales. However, we've only had one consultation so far, so I can't yet comment on the app development.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.6 4.6 (10)

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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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