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
1,112 Companies - Rankings updated: July 15, 2026
All mobile app development firms on DesignRush have been assessed for their expertise, portfolio, and verified client reviews. Some listings may be paid.
Advanced is a leading international provider of application modernization services.
Advanced is a leading international provider of application modernization services with unique expertise in the legacy modernization market... View Advanced portfolio
Top Services:
Mobile App Development
Location
Atlanta, Georgia
Number of Employees
1000 & Up
Portfolios Count
3 Projects Listed
Advanced Services
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Ventech Solutions is a trusted partner that delivers innovative solutions for technology transformations in the public sector... View Ventech Solutions portfolio
Top Services:
Software Development
Cloud Consulting
Mobile App Development
Cybersecurity
Show more
Location
Round Rock, Texas
Number of Employees
500 - 999
Portfolios Count
4 Projects Listed
Ventech Solutions Services
Software Development
Cloud Consulting
Mobile App Development
Cybersecurity
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
For over three decades, REI Systems has been at the forefront of delivering innovative solutions that have a profound impact on people's lives... View all reviews
Top Services:
Web Development
Mobile App Development
Location
Sterling, Virginia
Number of Employees
1000 & Up
REI Systems Services
Web Development
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Health Care Industry
Finance Industry
Government Industry
Data sourced from the agency's DesignRush profile
REI Systems Reviews & Testimonials
arifur rahman Review from Google
1.0★
arifur rahman's Review Sourced from Google
After taking two hours of interview they said they don’t have any job right now.Totally a Bad company who doesn’t have any value of candidates time.
Dr. Hariom Singh Review from Google
5.0★
Dr. Hariom Singh's Review Sourced from Google
Good pay, flexibility, promotion/raise structure, opportunities, and benefits. Employees really genuinely cared about and listened to. Leadership is humble and friendly. Employees are very happy and a large majority have been here for 10+ years. Lots of fun events. Managers truly care about furthering your career. Fun coworkers.
Hariom Singh Review from Google
5.0★
Hariom Singh's Review Sourced from Google
Good pay, flexibility, promotion/raise structure, opportunities, and benefits. Employees really genuinely cared about and listened to. Leadership is humble and friendly. Employees are very happy and a large majority have been here for 10+ years. Lots of fun events. Managers truly care about furthering your career. Fun coworkers.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
WinWire Technologies is a Data-driven Digital Engineering company helping enterprises navigate the digital technology revolution. especially through our application modernization services... View all reviews
Top Services:
Mobile App Development
AI Development
Location
Santa Clara, California
Number of Employees
500 - 999
WinWire Technologies Services
Mobile App Development
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
We are at the forefront of transforming data consumption and insights for businesses, revolutionizing the way they operate... View Bitwise portfolio | View all reviews
Top Services:
Mobile App Development
Location
Schaumburg, Illinois
Number of Employees
1000 & Up
Portfolios Count
6 Projects Listed
Bitwise Services
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
IT Industry
Fintech Industry
Standard Technology
Data sourced from the agency's DesignRush profile
Bitwise Reviews & Testimonials
Dan Steinberg Review from Google
4.0★
Dan Steinberg's Review Sourced from Google
I had Bitwise as a vendor for a year. I worked with Bitiwise overseas. They made my job easier due to our turnover at the company I was with. If you need a company that will keep your information up to date and meet deadlines, this is a good vendor to do business with.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
NorthBay Solutions is an AWS Premier Consulting Partner that has also formed partnerships with VMware, CloudRail, and SAP to support our customers on their AWS cloud journeys... View NorthBay Solutions portfolio | View all reviews
Top Services:
IT Services
Mobile App Development
Location
Andover, Massachusetts
Number of Employees
250 - 499
Portfolios Count
8 Projects Listed
NorthBay Solutions Services
IT Services
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
AIS (Applied Information Sciences) provides software and systems engineering services to government agencies and businesses across the United States... View all reviews
Top Services:
Mobile App Development
IT Services
AI Development
Location
Reston, Virginia
Number of Employees
1000 & Up
Applied Information Sciences Services
Mobile App Development
IT Services
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Accelerating Software Development - Building Offshore Software Development Centers
Accelerating Software Development - Building Offshore Software Development Centers
Saigon Technology builds native iOS and Android apps and Flutter and React Native solutions, delivering up to 40% faster than traditional models through Agile and DevOps practices. With 14+ years in business, it has completed 850+ projects and served 300+ clients like Standard Chartered Bank and Abbott... View Saigon Technology portfolio | View all reviews
Goji Labs builds iOS and Android apps across 20+ industries, pairing strategy, design, and engineering under one roof. With 500+ products shipped, $1B+ raised by clients, and 12 years in business, it challenges the brief solving strategy and process gaps before they become technical issues... View Goji Labs portfolio | View all reviews
Zazz uses an architecture-first, risk-aware, and outcome-driven development approach to produce 800+ cross-platform and native applications and accelerate time-to-value by 40%. Its services cover app development, design, audit, testing, modernization, and maintenance... View Zazz portfolio | View all reviews
Product Design & Engineering for Banks, Fintechs, and Enterprise Platforms
Product Design & Engineering for Banks, Fintechs, and Enterprise Platforms
Alty specializes in high-stakes mobile app development for fintech and banking, uniting strategy, design, and engineering under a single senior lead per engagement. A 4x Red Dot Award winner, it has built products used by 60M+ active users across 40+ markets... View Alty portfolio | View all reviews
Caveni Digital Solutions builds custom mobile apps with a focus on user-centric design, scalability, performance optimization, and cross-platform compatibility. Its USA-based team follows a structured four-step process from evaluation to evolution and offers 10+ years of industry experience... View Caveni Digital Solutions portfolio | View all reviews
Backed by 12+ years of expertise, Suffescom Solutions transforms business needs into innovative solutions through full-cycle development, spanning strategy, design, engineering, deployment, and app modernization. It also specializes in AR/VR, blockchain, IoT, AI, and PWA. Trusted by NBC and Stripe... View Suffescom Solutions Inc portfolio | View all reviews
AI-Driven Software Development Company in Singapore
AI-Driven Software Development Company in Singapore
TechTIQ Solutions pairs Singapore-based project management and QA with Vietnamese development talent to deliver iOS, Android, cross-platform, PWA, and wearable apps built for SEA markets. With 8+ years in business, it has completed 800+ projects for clients like Standard Chartered Bank and Abbott... View TechTIQ Solutions portfolio | View all reviews
DigitilizeWeb is a custom mobile app development firm with 12+ years of experience in building custom Android, iOS, Flutter, React, PWA, and hybrid apps. Based in the UK, it has partnered with 99+ businesses, including Caspian Pizza and Xerus Care, and maintains a 97% client retention rate... View DigitilizeWeb portfolio | View all reviews
Enterprise Software & AI Engineering - Silicon Valley Rigor, Nearshore Speed
Enterprise Software & AI Engineering - Silicon Valley Rigor, Nearshore Speed
Founded in 2013 with roots at Uber, Cheesecake Labs builds custom iOS and Android apps spanning mobile, blockchain, IoT, and AI integration. With 350+ digital products delivered, 85+ awards and certifications, and clients including Skyroam and Tapcart, it is considered a top mobile app development firm... View Cheesecake Labs portfolio | View all reviews
Innovating with AI, Crafting Future-Ready Solutions, Driving Business Transformation
Innovating with AI, Crafting Future-Ready Solutions, Driving Business Transformation
Openxcell, a leader in AI-driven software development, specializes in custom LLMs, web and mobile apps, AI strategy, and blockchain. With 500+ experts worldwide, we deliver tailored solutions to optimize operations and drive business growth. Lets unlock the power of AI together!... View Openxcell portfolio | View all reviews
Award-winning and Passion-driven app development company. More than a Tech partner.
Award-winning and Passion-driven app development company. More than a Tech partner.
Ranked among Singapore's top mobile app developers, Vinova builds Android, iOS, Flutter, React Native, and Cordova apps. It offers 15+ years of experience and 300+ global talents, and has served clients including Samsung, Abbott, OCBC, and AIA... View Vinova portfolio | View all reviews
Since 2009, Bilberrry has been producing cross-platform, native, and hybrid mobile apps that drive business growth. With expertise in 24+ technologies, it has delivered custom solutions for clients like BusinessWire, GoFundMe, and Deloitte... View Bilberrry portfolio | View all reviews
HDWEBSOFT is a leading software outsourcing company in Vietnam, known for its high-quality services, affordable pricing, and reliable team. With over 250 experienced engineers and a decade of expertise, HDWEBSOFT has helped businesses of all sizes from around the world to develop and launch successful... View HDWEBSOFT portfolio | View all reviews
AddWeb Solution is a Greenville, South Carolina - based AI-driven digital agency delivering innovative digital solutions worldwide... View AddWebSolution portfolio | View all reviews
Offshore Development Center: Your Gateway to Global Talent
Offshore Development Center: Your Gateway to Global Talent
Our Offshore Development Center offers small and medium US businesses access to a diverse talent pool through our development centers in Poland, Portugal, Ukraine, and the Philippines. Leverage global talent to stay competitive in the global market. Benefit from cost-effective solutions tailored for small and... View Offshore Development Center portfolio | View all reviews
12AM Agency helps local service businesses move from inconsistent lead flow to predictable, high-quality lead generation using AI visibility, Google Maps, and conversion systems... View 12AM Agency portfolio | View all reviews
Digital Marketing Agency & App Development Company
Digital Marketing Agency & App Development Company
Out Origin pairs iOS, Android, and web app development with digital marketing services, including SEO, paid advertising, and email campaigns. Operating since 2014 with 500+ clients served, it has built apps for brands including Duracell, Targus, and the University of Alberta... View Out Origin portfolio | View all reviews
Guiding and helping businesses worldwide build solutions that sell. Genetech is an award-winning custom software development company with almost 2 decades of experience in delivering top-notch tech services, including AI, IoT, Intelligent Apps, Cyber Security, and Tech Talent... View Genetech Solutions portfolio | View all reviews
Empower Your Business With Future Ready IT Solutions
Empower Your Business With Future Ready IT Solutions
A3Logics delivers native, cross-platform, IoT, and wearable apps with AI, blockchain, and AR/VR integrations. The mobile app development company brings 21+ years of experience, 350+ in-house experts, and 500+ delivered projects, with a 91% repeat client rate... View A3Logics portfolio | View all reviews
An IT partner with time-tested expertise in solving complex software challenges requiring narrow specialization. Explore 40+ case studies on DesignRush... View SEVEN portfolio | View all reviews
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... View Instinctools portfolio | View all reviews
Award-winning mobile app development company TRIARE offers services across native, cross-platform, PWA, and enterprise app development. With a client-first approach, it has gained the trust of brands like Bob Snail and SuperStud and earned the recognition of the CSS Design Awards... View TRIARE portfolio | View all reviews
Transforming the World's Most Innovative Companies
Transforming the World's Most Innovative Companies
Transforming the world's most innovative B2B tech companies into the best version of themselves through branding, websites, app development and all the experiences in between... View BRIGHTSCOUT portfolio | View all reviews
App Development drives innovation at Closeloop Technologies. With our unique expertise, we deliver tailored mobile solutions that enhance user engagement and business growth. Expect collaborative, cutting-edge apps designed to meet your specific goals and elevate your digital presence... View Closeloop Technologies portfolio | View all reviews
Innovating Success Through Technology & Blockchain.
Innovating Success Through Technology & Blockchain.
InvoZone provides comprehensive software development consulting services for businesses, startups, and enterprises... View InvoZone portfolio | View all reviews
Digital Transformation Company. App & Web Development, Cloud, Consulting.
Digital Transformation Company. App & Web Development, Cloud, Consulting.
Embark on a journey of innovation and growth with Successive Technologies, a pioneering software development and eCommerce app development company committed to turning business ideas into thriving realities... View Successive Digital portfolio | View all reviews
SDLC Corp provides solutions for clients seeking an innovative app development agency that transforms ideas into scalable, high-performance applications. Our proven strategies drive excellence in every mobile app and digital product we handle, ensuring seamless user experiences and measurable business growth... View SDLC Corp portfolio | View all reviews
Award-Winning AR / VR / XR / AI / WebGl Experiences
Award-Winning AR / VR / XR / AI / WebGl Experiences
Groove Jones is an innovative technology company that specializes in creating AI/VR/AR software solutions for a wide range of industries, including advertising, entertainment, marketing, health, and training... View Groove Jones portfolio | View all reviews
Tallium Inc. is a trusted partner for your business innovations.
Tallium Inc. is a trusted partner for your business innovations.
Working with Tallium means you dive into a world where digital innovation meets seamless mobile solutions. Clients trust our innovative approach to crafting intuitive software experiences that elevate user engagement and drive business growth through cutting-edge technology and design... View Tallium portfolio | View all reviews
Chudovo: A nearshore software development leader with offices in Cologne, Kyiv, NY, Tallinn, and London. Specializing in healthcare, finance, and more. Innovative, domain-focused solutions... View Chudovo OÜ portfolio | View all reviews
MyCloudPulse Technology Pvt. Ltd. has a team of enthusiastic tech geeks who are masters of their fields and are passionate about the development technologies. We have ventured with some of the renowned businesses around the globe and understand the needs of the international clients well... View MyCloudPulse Technology Pvt. Ltd. portfolio | View all reviews
App Development is at the heart of what we do. EffectiveSoft stands out because we turn your ideas into reliable digital products, supporting you from concept to launch and beyond. Our collaborative approach yields unmatched expertise in software, AI, and cloud solutions for your growth... View EffectiveSoft portfolio | View all reviews
Work with the agency backed by 10+ Years, 100+ 5-Star Reviews & 50+ Marketing Experts
Work with the agency backed by 10+ Years, 100+ 5-Star Reviews & 50+ Marketing Experts
Over 10 years of experience. 50+ experts, 100+ 5-star Google reviews. Brands like Volvo and KPMG trust us to grow across borders with multilingual marketing that works. We can help your business do the same. Ready to scale? Let's talk... View SaphirSolution portfolio | View all reviews
Unified Infotech is a 14-year-old, multi-award winning digital transformation partner. We turbocharge business growth for Fortune 500 companies, multinational corporations (MNCs), small and medium-sized enterprises (SMEs), and Startups using emerging tech and streamlined digital processes... View Unified Infotech portfolio | View all reviews
Rubyroid Labs is a software development company specializing in Ruby on Rails, React Native and UX/UI Design. since 2013. We architect end-to-end services for both large enterprises (Mastercard, Volvo, Toyota) and leading startups from Y Combinator and Seedcamp... View Rubyroid Labs portfolio | View all reviews
Moving past IT Outsourcing, let us become your Strategic Technology Partner who will have you covered and kindle your digital innovations... View Synodus portfolio | View all reviews
Building Powerful B2B eCommerce and Custom Platforms for Leading Manufacturers & Distributors
Building Powerful B2B eCommerce and Custom Platforms for Leading Manufacturers & Distributors
Codup enables manufacturing, distribution, and wholesale businesses to unlock scalable growth with process-driven B2B eCommerce and custom software solutions. We build integrated platforms and portals that simplify complex operations and drive digital transformation... View Codup portfolio | View all reviews
Top 1% Software Development Company Trusted By Fortune 500
Top 1% Software Development Company Trusted By Fortune 500
CraftedQ is a one-stop shop for all your digital needs. Our team of 300+ experts in full-stack development, DevOps, cloud architecture, product development, digital consulting, UI/UX design and project management can help your business create a comprehensive digital presence... View CraftedQ portfolio | View all reviews
Selina Garcia has authored 500+ articles and edited 50+ published books in economics, law, and history. Her unique blend of experiences allows her to approach content creation from a well-rounded perspective. Currently, Selina applies her expertise to producing insightful articles on IT, software, and applications for DesignRush.
Sergio is a technology leader with over six years of experience managing global teams and delivering projects across fintech, sportstech, and B2B platforms. At DesignRush, he drove product growth and development execution, building tools that speed up processes by 95% and cut costs by 35% while maintaining full uptime.
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