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

11 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 Services × NFT × $10,000 - $25,000 ×Clear Filters
  • Your AI-powered Engineering Partner

    instinctools is a professional mobile app development agency with 25+ years of experience delivering AI-driven custom software and digital products. With 400+ experts across global hubs, we accelerate your app’s time-to-market while ensuring quality and security through multiple ISO certifications...

    Top Services:

    • Software Development
    • Web Development
    • Mobile App Development
    • Big Data Analytics
    • eCommerce Development
    • Show more
    Location
    Potomac, Maryland
    Number of Employees
    250 - 499
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    69 Projects Listed

    Instinctools Services

    • Software Development
    • Web Development
    • Mobile App Development
    • Big Data Analytics
    • eCommerce Development
    • Product Design
    • AI Development
    • IT Services
    • ERP Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Swiss Red Cross
    • SAP
    • FUJITSU
    • BURDA DIGITAL
    • DAIMLER
    • VoxGen
    • Acrolinx
    • trimet
    • darwinapps
    • AT Consulting
    Data sourced from the agency's DesignRush profile

    Instinctools Reviews & Testimonials

    • Undisclosed
      Undisclosed Manager ITM/PSE - Procurement Systems Daimler AG at Daimler
      5.0

      Software Development Review from Undisclosed

      Daimler's new Global Buying System, GLOBUS, now features proficient web-based assistance and user support. The client opted for Instinctools' forward-thinking solution that catered to its requirements, especially in multilingual content, adaptability, and scalability. (Verified via email)

    • Edward Rimon
      Edward Rimon Product and Customer Experience Director at Retail company
      5.0

      Software Development Review from Edward Rimon

      The client hadn't realized how much of its data went unused, with nearly 90% of decisions made on barely half the data. But with Instinctools' business intelligence expertise and proactive approach, the client now makes decisions with greater confidence, drawing from a more comprehensive data set and quickly addressing new challenges. All tasks, and more, were efficiently handled by a tech-skilled and proactive team. (Verified via email)

    • Dr. Jonas Block
      Dr. Jonas Block Product Owner at Ipwe
      5.0

      Software Development Review from Dr. Jonas Block

      Instinctools' has the professionalism and flexibility that young companies need. Ipwe trusts the agency's tested workflow that integrates well with internal processes. The ability to quickly add experienced and valuable professionals without prolonged interviews is a major plus. Moreover, this team is full of interesting and kind people. (Verified via email)

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Strategic Technology Partner

    Moving past IT Outsourcing, let us become your Strategic Technology Partner who will have you covered and kindle your digital innovations...

    Top Services:

    • Web Development
    • Blockchain
    • Software Development
    • AI Development
    • IoT
    • Show more
    Location
    Hanoi, Vietnam
    Number of Employees
    250 - 499
    Average Hourly Rate
    $18/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    16 Projects Listed

    Synodus Services

    • Web Development
    • Blockchain
    • Software Development
    • AI Development
    • IoT
    • Mobile App Development
    • IT Services
    • Big Data Analytics
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • DeFi For You
    • Gamestate.one
    • Smartchannel AU
    • Boody AU
    • Cyber8
    • Softline
    • Techcombank
    • Unilever
    • KPMG
    • Viettel
    Data sourced from the agency's DesignRush profile

    Synodus Reviews & Testimonials

    • Joeri Leeuwerik
      Joeri Leeuwerik Sales Photographer at Brandist NYC
      5.0

      Web Development Review from Joeri Leeuwerik

      Synodus developed a digital identity verification solution for us, and we are very pleased with the results. The project was completed on time, and their team stayed within budget constraints. They were highly responsive and maintained clear communication throughout the process. The solution is efficient and secure, meeting all our requirements.

    • Madeline Perez
      Madeline Perez Organization Manager at Land Home Financial Services
      5.0

      Big Data Analytics Review from Madeline Perez

      Our experience with Synodus on the analytics dashboard project was fantastic. They demonstrated a deep understanding of our requirements and delivered a solution that provides actionable insights from our data. The project was completed on schedule and within budget. Their communication and support were top-notch, making the whole process smooth and effective.

    • Hershey Rosen
      Hershey Rosen Tech entrepreneur at Tech Entrepreneur
      5.0

      Mobile App Development Review from Hershey Rosen

      We work with Synodus in making a mobile banking app for us that has significantly improved our customer engagement. Their team was professional, adhered to the timeline, and stayed within budget. They provided excellent support and were always available to address our concerns. The app is intuitive and has received positive feedback from our users.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • World-Class Software Engineering Partner

    Dream X is a full-cycle software development company dedicated to building high-performance products. Founded in 2022 by Alexandr Korshykov, we partner with businesses worldwide to deliver end-to-end technical solutions...

    Top Services:

    • UI/UX Design
    • Web Design
    • Product Design
    • Mobile App Development
    • Web Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    15 Projects Listed

    DreamX Services

    • UI/UX Design
    • Web Design
    • Product Design
    • Mobile App Development
    • Web Development
    • eCommerce Development
    • Software Testing
    • Software Development
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Pladri
    • Greek Time Corp.
    • PropTexx
    Data sourced from the agency's DesignRush profile

    DreamX Reviews & Testimonials

    • Yuriy Husev
      Yuriy Husev Head of Marketing at DMT Business Development
      5.0

      UI/UX Design Review from Yuriy Husev

      We hired DreamX to redesign our company website to better reflect DMTs modern approach to B2B lead generation and appointment-setting services. The DreamX team quickly understood our brands personality and transformed it into a sleek, fast, and conversion-focused digital experience. Their UX/UI team created user flows that made our content easier to navigate and optimized for lead capture. Communication was professional and consistent we always knew exactly what stage the project was in. The final result exceeded expectations: the new website not only strengthened our online presence but also positively impacted inbound lead quality. We highly recommend DreamX to any business looking for a creative and reliable design partner.

    • Vlad Kozhulenko
      Vlad Kozhulenko COO at Viso
      5.0

      UI/UX Design Review from Vlad Kozhulenko

      We worked with DreamX on developing a corporate website, and the results exceeded our expectations. Their team demonstrated a perfect balance of creativity, technical expertise, and attention to detail. From the very first step, they carefully analyzed our needs, created a modern and functional design, and ensured a smooth user experience.What impressed us most was their ability to translate our brand identity into a digital format that feels both professional and engaging. DreamXs communication was clear and proactive throughout the project, which made the entire collaboration smooth and efficient.I highly recommend DreamX to any company looking for a reliable partner in web and UI/UX design. They not only deliver on time but also go the extra mile to make sure the final product truly stands out.

    • Iryna Liashko
      Iryna Liashko Digital Marketing Specialist at SoloWay Technologies
      5.0

      Web Design Review from Iryna Liashko

      We partnered with DreamX to redesign our corporate website and improve its overall user experience. Their team approached the project with a clear strategy, focusing on both visual appeal and usability.From the very beginning, communication was excellent, every step of the process was transparent, and we received timely updates along with interactive design prototypes. DreamX demonstrated strong expertise in UX/UI, helping us simplify complex flows and create a design that looks modern, clean, and fully responsive.The final result exceeded expectations: the site now feels intuitive, fast, and visually consistent across all devices. Were very satisfied with the collaboration and highly recommend DreamX for any UX/UI design projects.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Empowering Startups.

    RedCat is an information technology firm that provides web and mobile development services to customers all over the globe.Over the last five years, we have assisted foreign startups in securing a suitable position on the market and achieving growth via the use of the most cutting-edge technologies...

    Top Services:

    • Mobile App Development
    • Software Development
    • AI Development
    • IoT
    • Software Testing
    • Show more
    Location
    Kharkiv, Ukraine
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    9 Projects Listed

    RedCat Services

    • Mobile App Development
    • Software Development
    • AI Development
    • IoT
    • Software Testing
    • Blockchain
    • Staff Augmentation
    • IT Services
    • Web Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • PassBase
    • ThrowNoMore
    • DonorSearch
    • Ubicar
    • MySize
    • Hyfit
    • Xrist
    • Gorodissky
    • SmartDrive
    • GTW
    Data sourced from the agency's DesignRush profile

    RedCat Reviews & Testimonials

    • Danny Gwynne
      Danny Gwynne Director at Spark Media
      5.0

      Web Development Review from Danny Gwynne

      I loved working with Redcat! They developed a fantastic web application for our media production company. Their team was friendly, professional, and delivered high-quality work on time. They understood our needs and suggested great solutions. The design was modern and exceeded our expectations. Communication was smooth, and they were always available to answer questions. I highly recommend Redcat for web development projects!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Creating Stunning Web and Mobile Apps

    Cleveroad is a leading provider of web and mobile solutions that cater to diverse industries and budgets. With a global team of skilled IT professionals and expertise earned from developing 500+ custom apps, we offer end-to-end development services, UI/UX design, cloud-based solutions, and advanced...

    Top Services:

    • Software Development
    • Staff Augmentation
    • IoT
    • IT Services
    • Mobile App Development
    • Show more
    Location
    Claymont, Delaware
    Number of Employees
    50 - 99
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    12 Projects Listed

    Cleveroad Services

    • Software Development
    • Staff Augmentation
    • IoT
    • IT Services
    • Mobile App Development
    • Web Development
    • ERP Consulting
    • Web Design
    • AI Development
    • Cloud Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • OpenMind
    • Cartogram
    • DPD
    • VirginAtlantic
    • Money Wiz
    • HSBC
    • Octopus Investments
    • BET3000
    Data sourced from the agency's DesignRush profile

    Cleveroad Reviews & Testimonials

    • Thomas Day
      Thomas Day Review from Google
      5.0

      Thomas Day's Review Sourced from Google

      We engaged with Cleveroad to develop a custom application that we use to support our customer events. From the beginning, the Cleveroad team worked as true partners to understand our needs and outcomes of the product. They worked in a predictable cadence and were a welcome extension of my team. I would highly recommend Cleveroad to anyone looking trusted software development partner.

    • Matt Needleman
      Matt Needleman Review from Google
      5.0

      Matt Needleman's Review Sourced from Google

      I have worked with Cleveroad for several years now. They helped me launch an App from scratch and I could not be happier with the results. They worked hard to understand and execute my vision and are incredibly responsive to customer needs. I highly recommend anyone needing App development to work with them.

    • Camila Romero
      Camila Romero Review from Google
      5.0

      Camila Romero's Review Sourced from Google

      Cleveroad's team is professional, responsive, and highly skilled. We've had a seamless experience collaborating with them. Their structured workflow and attention to detail make them a trusted development partner. Highly recommend!-Pagato team.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Games for Business

    At Jam Style, we apply our thorough experience in game development to increase customer and employee engagement with innovative solutions...

    Top Services:

    • Mobile App Development
    • Software Development
    • Digital Marketing
    • Creative Services
    • IT Services
    • Show more
    Location
    Belgrade, Serbia
    Number of Employees
    50 - 99
    Average Hourly Rate
    $33/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    12 Projects Listed

    Jam Style Services

    • Mobile App Development
    • Software Development
    • Digital Marketing
    • Creative Services
    • IT Services
    • Digital Strategy
    • Event Marketing
    • CRO
    • Content Marketing
    • Web Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • 77-bit
    • 1inch
    • Bookmate
    • Headhunter
    • Gazprombank
    • Xiaomi Russia
    • Boohooman UK
    • Sibur
    Data sourced from the agency's DesignRush profile
  • Custom Mobile Apps, Web Platforms & Blockchain - Paris Studio Since 2017

    Paris-based studio building custom mobile apps (iOS/Android), web platforms, SaaS and Web3 products. 50+ in-house developers, designers and PMs, no subcontracting. Apps used by 100K+ people; clients include TF1, Livmed's and Book Village. Projects from 10K EUR. Rated 4.8/5 on Google...

    Top Services:

    • UI/UX Design
    • AI Development
    • Blockchain
    • SEO
    • Content Marketing
    • Show more
    Location
    Paris, France
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000

    Digital Unicorn Services

    • UI/UX Design
    • AI Development
    • Blockchain
    • SEO
    • Content Marketing
    • Mobile App Development
    • Web Design
    • Software Development
    • Web Development
    • eCommerce Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Lifein
    • Livmed's
    • Artway NFT
    • Bookvillage
    • Linework
    • Lou by Wodu
    Data sourced from the agency's DesignRush profile

    Digital Unicorn Reviews & Testimonials

    • Mahadi Hasan
      Mahadi Hasan Marketing Specialist at Max Zone IT
      5.0

      Mobile App Development Review from Mahadi Hasan

      We hired Digital Unicorn for our mobile app development and web design project- and we worked with their team for around 6 months. Overall, Our experience was Super positive, and they delivered a high-quality service throughout the project. Lucas, Panos, and Chris were especially great to work with. They were professional, responsive, knowledgeable & always willing to understand our requirements and provide the right solutions. the design quality and development work were impressive and the team maintained good communication throughout the engagement. We are very happy with the final results and appreciate the dedication and expertise of the entire Digital Unicorn Teams. I would definitely recommend them to businesses looking for reliable Mobile Ppp development and web design services.

    • issa kilani
      issa kilani Review from Google
      5.0

      issa kilani's Review Sourced from Google

      We worked with Digital Unicorn on the development of our web platform. They listened carefully to our needs, created excellent mockups, and delivered in sprints as planned.Their process and methodology are truly enjoyable. The team is very knowledgeable about web and mobile development.Whether it's Lucas, Sébastien, or Martin, thank you again to them. We're continuing to work with them on maintenance.

    • Lucienne
      Lucienne Review from Google
      5.0

      Lucienne's Review Sourced from Google

      We worked with Digital Unicorn on the development of our mobile and web applications.Lucas and Chris provided excellent support, always available and responsive, even when we changed our minds along the way.The app is live on the app stores, and the web application is running perfectly. We're continuing with them for the future, which says it all.I highly recommend them if you're looking for an application development agency.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • DESIGN. DEVELOPMENT. MAINTENANCE.

    At Synthax.codes, we specialize in delivering professional, end-to-end website and software development services tailored to your business needs. From cutting-edge UI/UX design and seamless website development to efficient website migration, third-party integrations, and ongoing optimization...

    Top Services:

    • Web Development
    • Blockchain
    • Mobile App Development
    • Software Development
    • Cybersecurity
    • Show more
    Location
    Augsburg, Germany
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    3 Projects Listed

    Synthax.codes Services

    • Web Development
    • Blockchain
    • Mobile App Development
    • Software Development
    • Cybersecurity
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Humanshiftpaper
    • Midchains
    • Radke
    • IXswap
    • IFT
    • VentureRocket
    Data sourced from the agency's DesignRush profile
  • Empowering Businesses Through AI- Driven Digital Transformation

    Brightter is a global AI-driven digital transformation company based in San Francisco. We have partnered with forward-thinking businesses for over a decade to create exceptional digital experiences. Our expertise spans AI transformation, brand strategy, website development, web applications, and search engine...

    Top Services:

    • Digital Services
    • Graphic Design
    • Branding
    • Digital Strategy
    • Web Design
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $120/hr
    Minimal Budget
    $10,000 - $25,000

    Brightter Inc. Services

    • Digital Services
    • Graphic Design
    • Branding
    • Digital Strategy
    • Web Design
    • Web Development
    • WordPress Website Design
    • SEO
    • Mobile App Development
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Chase
    • Oracle
    • Opswat
    • Novoed
    • REI Corp
    • Sephora
    • Wells Fargo
    • Mckesson
    • Ikea
    • The Coca-Cola Company
    Data sourced from the agency's DesignRush profile
  • Engineering Software That Powers Business Success

    Softean is a software development company delivering scalable, secure, and intelligent digital solutions for startups and enterprises worldwide...

    Top Services:

    • Software Development
    • Mobile App Development
    • Blockchain
    • eCommerce Development
    • Web Development
    • Show more
    Location
    Madurai, India
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000

    Softean Technologies Services

    • Software Development
    • Mobile App Development
    • Blockchain
    • eCommerce Development
    • Web Development
    • UI/UX Design
    • Cloud Consulting
    • DevOps Consulting
    • IT Services
    • Cybersecurity
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Noverax
    • Payozol
    • Leurton
    Data sourced from the agency's DesignRush profile
  • Powering Innovation. Enabling Change.

    From design to deployment, Claritus delivers secure, scalable, and user-friendly applications backed by 24/7 support...

    Top Services:

    • Web Development
    • Mobile App Development
    • DevOps Consulting
    • Cloud Consulting
    • IT Services
    • Show more
    Location
    Noida, India
    Number of Employees
    100 - 249
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $10,000 - $25,000

    Claritus Consulting Services

    • Web Development
    • Mobile App Development
    • DevOps Consulting
    • Cloud Consulting
    • IT Services
    • Managed Services
    • Staff Augmentation
    • Software Development
    • AI Development
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Blue Star
    • ValuePros
    • EnVue Telematics, LLC
    • Aussie Chook Supplies
    Data sourced from the agency's DesignRush profile

    Claritus Consulting Reviews & Testimonials

    • Abhijeet Uniyal
      Abhijeet Uniyal Review from Google
      5.0

      Abhijeet Uniyal's Review Sourced from Google

      Interview process was very goodGave interview for the post of recruitment profileFirst round went wellAnd, the lady who took my first round of interview was behaving in a very polite and convenient mannerThe second was with one of the guy who told me about the company's process including it's clients and the services they are offering to the clientsAnd, in the end of the second round, the interviewer gave the feedback in a very positive manner that first time I have talked with you so much as I have never talked with any of the candidates before came for the interview and he really liked my confidence and my way of talking and presenting myself in the interviewThe third round was with one mam who asked very relevant questions related to my education qualifications and my past experiences so far in my ex organizationsAnd, I also liked the behaviour of the mam who took my last round of interview because the way she was taking my interview in that manner that no one hasn't taken this type of interview before in any of the companyThis organization is basically a consulting firmAnd, the good thing about is that they have 5 days working policyIf you are applying for the recruiter position in this organization, make sure that you should have relevant experience in that domain and also you should focus on your communication and presentation skills because in interview, they will mostly check your communication skills only and secondly, your experience whatever the work you have done in your past organizations beforeThe nearest metro station to this place is Noida Sector 16 as this place is located very close to the metro station in A block itself

    • Mehak Khanna
      Mehak Khanna Review from Google
      5.0

      Mehak Khanna's Review Sourced from Google

      Claritus Consulting offers a collaborative culture, supportive team, and strong focus on work-life balance—ideal for professional growth.

    • Rahul Gupta
      Rahul Gupta Review from Google
      5.0

      Rahul Gupta's Review Sourced from Google

      I am blessed working with Claritus as it helps me to grow up in the market like learning new technology, getting certified courses and also providing opportunities to work with international clients.The managers have helping nature as they always provide opportunities to prove yourself.HR Team is very polite for all in the company, always ready to help and makes environment of the company interactive.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews

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