Best US Application Modernization Services Companies

475 Companies - Rankings updated: May 15, 2026

Each agency listed on DesignRush is assessed for industry expertise and customer testimonials are evaluated in order to provide you with a vetted selection. Certain listings represent paid partnerships.

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  • DyCoders

    technology for innovators

    technology for innovators

    Dycoders team creates solutions for tech industry from startups to businesses, and have a proven track record of providing development services to over 50 companies. Dycoders is not just a developers hub but has digital designers who can make top quality softwares including mobile apps.  [... view DyCoders profile ]
    Location
    Boston, Massachusetts
    Number of Employees
    100 - 249
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    6 Projects Listed
    View Profile

  • Atomic Object

    The Right Software Can Change Everything

    The Right Software Can Change Everything

    Atomic Object is a top-rated custom software design and development consultancy. Our co-located, U.S.-based team works with executives to improve their bottom line by delivering new products, enhancing existing products, modernizing legacy products, and integrating AI into their software systems.  [... see all Atomic Object reviews ]
    Location
    Grand Rapids, Michigan
    Number of Employees
    100 - 249
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    1 Project Listed
    View Profile
    4.2 4.2 (1)
    4.7 4.7 (35)

  • Profstep LLC

    Empowering brands with unparalleled e-commerce excellence for online success!

    Empowering brands with unparalleled e-commerce excellence for online success!

    With 32 official Adobe Commerce certifications and recognition as an Adobe Solution Partner, our development team ensures expertise and a commitment to excellence you can rely on.Profstep Agency, is a full-cycle development company delivering best-in-class Adobe Commerce solutions to B2B and B2C c  [... view Profstep LLC profile ]
    Location
    Dover, Delaware
    Number of Employees
    Under 49
    Average Hourly Rate
    $85/hr
    Portfolios Count
    12 Projects Listed
    View Profile

  • Cyfrania

    Launching Valuable Solutions

    Launching Valuable Solutions

    Cyfrania serves as a professional software development consultancy, dedicated to assisting our clients in enhancing their applications and staying at the forefront of technological advancements. Our team of engineers provides ongoing, valuable insights, fostering a continuous exchange of ideas and ensuring  [... view Cyfrania profile ]
    Location
    St. Petersburg, Florida
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    12 Projects Listed
    View Profile

  • ThinkUp

    The App Development partner for leading companies

    The App Development partner for leading companies

    ThinkUp is a quality-obsessed digital product development company specializing in mobile apps and unique user experiences. We create world-class digital products and exceptional mobile experiences for startups, unicorns, and organizations such as dLocal, AstroPay, Itau Bank, OCA, and Bodhi.  [... view ThinkUp profile ]
    Location
    Minneapolis, Minnesota
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    9 Projects Listed
    View Profile

  • SaM Solutions

    Building tomorrow with technology!

    Building tomorrow with technology!

    SaM Solutions is a software engineering company offering a range of services, including software development, IT consulting, and quality assurance.  [... view SaM Solutions profile ]
    Location
    Norwood, Massachusetts
    Number of Employees
    500 - 999
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    6 Projects Listed
    View Profile
    5.0 5.0 (3)

  • Overit

    Our company started just like yours: With a dream. With risk. With inspiration. With a vision.

    Our company started just like yours: With a dream. With risk. With inspiration. With a vision.

    As a creative agency, we are disruptors in the digital marketing space.  [... view Overit profile ]
    Location
    Albany, New York
    Number of Employees
    50 - 99
    Average Hourly Rate
    $200/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile
    4.1 4.1 (20)

  • Dot Com Development

    The right team changes everything. We're that team for you!

    The right team changes everything. We're that team for you!

    ON TIME, ON BUDGET ... SOLUTIONS EXCEEDING EXPECTATION.Professional Development You Can Trust  [... view Dot Com Development profile ]
    Location
    Scottsdale, Arizona
    Number of Employees
    Under 49
    Portfolios Count
    12 Projects Listed
    View Profile

  • Rubico

    20+ Years of Custom Software!

    20+ Years of Custom Software!

    Rubico is passionate about creating websites, web applications and mobile apps! With offices in the US and India, we are well equipped to help any business achieve its development goals!  [... view Rubico profile ]
    Location
    Austin, Texas
    Number of Employees
    100 - 249
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    14 Projects Listed
    View Profile
    5.0 5.0 (4)

  • Launch Smarter

    An award winning digital marketing agency specializing in SEO, PPC, and More.

    An award winning digital marketing agency specializing in SEO, PPC, and More.

    Launch Smarter designs high-performing websites and brand experiences for companies ready to scale. We blend strategy, design, and automation to help businesses grow smarterwith results that convert, brands that stand out, and systems that scale.  [... view Launch Smarter profile ]
    Location
    Winchester, Massachusetts
    Number of Employees
    50 - 99
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    14 Projects Listed
    View Profile

  • AppIt Ventures

    We Build Custom Apps.

    We Build Custom Apps.

    We're an award-winning, woman-owned and led, custom software development company.  [... view AppIt Ventures profile ]
    Location
    Denver, Colorado
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    7 Projects Listed
    View Profile
    4.7 4.7 (31)

  • Pelotech

    Seasoned Senior Developers Specialized In Kubernetes And Cloud Solutions

    Seasoned Senior Developers Specialized In Kubernetes And Cloud Solutions

    At Pelotech, we're a team of seasoned senior developers specialised in Kubernetes and cloud solutions. We partner with companies, from Fortune 500 giants to mid-sized businesses, to solve complex challenges in cloud migration, integrations, application development and modernisation initiatives.  [... view Pelotech profile ]
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $200/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile

  • Codebludev

    Full Service Web & Software Development Agency

    Full Service Web & Software Development Agency

    CodeBlu Development delivers custom web, software, and app solutions designed to solve complex challenges. We build what others wont, crafting innovative and tailored digital experiences to exceed expectations.  [... see all Codebludev reviews ]
    Location
    Cincinnati, Ohio
    Number of Employees
    Under 49
    View Profile
    4.5 4.5 (2)

  • smartboost

    Digital Marketing Agency for Online Growth

    Digital Marketing Agency for Online Growth

    We are a digital marketing agency focusing on revenue growth that specializes in helping tech products and services, startups, software, and SaaS businesses achieve sustainable growth through the use of data-driven marketing strategies and growth website design.  [... view Smartboost profile ]
    Location
    Las Vegas, Nevada
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile
    5.0 5.0 (55)

  • APPWRK

    Dream Build Grow!

    Dream Build Grow!

    APPWRK IT Solutions Pvt. Ltd. is a global IT service providing company. We provide a wide range of IT services and support solutions which includes Web Development Services, Web Designing Services, APP Development and Designing, Digital Marketing for Industries like Healthcare, Education, Retail and Logistics  [... view APPWRK profile ]
    Location
    Tampa, Florida
    Number of Employees
    100 - 249
    Average Hourly Rate
    $18/hr
    Portfolios Count
    7 Projects Listed
    View Profile
    4.3 4.3 (93)

  • bART Solutions

    The art of software development.

    The art of software development.

    Custom software development company specialized in web, desktop and mobile development, UI/UX design, CRM integrations.  [... view BART Solutions profile ]
    Location
    Sheridan, Wyoming
    Number of Employees
    50 - 99
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    7 Projects Listed
    View Profile
    5.0 5.0 (2)

  • Marotino

    Software Solutions That Work For You

    Software Solutions That Work For You

    Marotino leads the way in redefining IT solutions and blockchain development, focusing on innovative end-to-end solutions that guarantee success for our clients. Our commitment to understanding your unique needs and our emphasis on quality and time-to-market strategies make us a trusted partner in your  [... view Marotino profile ]
    Location
    Miami, Florida
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    12 Projects Listed
    View Profile
    5.0 5.0 (5)

  • RDA

    Vision-Led. Outcome-Focused.

    Vision-Led. Outcome-Focused.

    We're a collection of hardcore technology enthusiasts whose brains are wired for business. We're as much about designing for conversion on the front end as we are about engineering for scalability on the back end. Form and function. Style and substance. That's who we are.  [... view RDA profile ]
    Location
    Baltimore, Maryland
    Number of Employees
    100 - 249
    View Profile
    4.7 4.7 (3)

  • KNDCODE

    Always Ahead, Forward, Near.

    Always Ahead, Forward, Near.

    KNDCODE delivers quick and easy access to custom-tailored technology solutions, nearshore services and team augmentation that multiply organizational efficiency, and maximize usability.  [... view KNDCODE profile ]
    Location
    Carmel, Indiana
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile

  • JH Specialty

    A Partner You Can Rely On

    A Partner You Can Rely On

    JH is a full-service marketing and communications firm based in Fort Wayne, Ind. Founded by John Henry III in 1998, the company specializes in the utilization of technology in marketing applications,website design, web development, search engine marketing, communications, and efficiency.  [... view JH Specialty profile ]
    Location
    Fort Wayne, Indiana
    Number of Employees
    50 - 99
    View Profile
    5.0 5.0 (24)

  • Kolla Soft

    Value-Driven IT Services

    Value-Driven IT Services

    Kollasoft offers IT services, to meet the standalone or collaborative application development requirement of local and global businesses.  [... view Kolla Soft profile ]
    Location
    Scottsdale, Arizona
    Number of Employees
    Under 49
    View Profile
    3.5 3.5 (8)

  • SourceFuse

    Modernize and Migrate Legacy Applications.

    Modernize and Migrate Legacy Applications.

    SourceFuse is an open-source rapid application development framework for development of modern cloud-native enterprise applications. ARC leverages a catalog of prebuilt backend microservices, micro-frontends, and infrastructure as code (IaC) modules that can be deployed on private and public clouds.  [... view SourceFuse profile ]
    Location
    Neptune Beach, Florida
    Number of Employees
    250 - 499
    View Profile
    5.0 5.0 (4)

  • Cask

    Workflows Simplified with ServiceNow

    Workflows Simplified with ServiceNow

    Multi-award winning ServiceNow Elite Partner designing, enabling and sustaining digital transformation on ServiceNow.  [... view Cask profile ]
    Location
    San Diego, California
    Number of Employees
    250 - 499
    View Profile

  • Rocket Software

    Rocket Software partners with the largest Fortune 1000 organizations to solve their most complex IT challenges across Applications, Data, and Infrastructure. Rocket Software brings customers from where they are in their modernization journey to where they want to be by architecting innovative solutions that  [... view Rocket Software profile ]
    Location
    Waltham, Massachusetts
    Number of Employees
    1000 & Up
    View Profile
    4.8 4.8 (17)

  • Cambay Consulting

    We Enable Constant Enterprise Transformation at Speed and Scale.

    We Enable Constant Enterprise Transformation at Speed and Scale.

    We are an intellectual property-led healthcare solutions provider focused on project management, enterprise data, and emerging technologies.  [... view Cambay Consulting profile ]
    Location
    Katy, Texas
    Number of Employees
    250 - 499
    View Profile
    1.0 1.0 (1)

  • CEI

    Intelligence, Delivered.

    Intelligence, Delivered.

    In todays technology-driven world, the mandate of transformation represents both challenges and opportunities. CEI enables clients to harness innovation to gain competitive advantage and achieve meaningful results.  [... view CEI profile ]
    Location
    Pittsburgh, Pennsylvania
    Number of Employees
    1000 & Up
    View Profile
    3.4 3.4 (16)

  • WeGotCode

    Tailoring Excellent Tech

    Tailoring Excellent Tech

    WeGotCode specializes in custom application development and efficient software integrations. Its commitment extends beyond technology, delivering transformative solutions to optimize workflows and enhance system communications. Leveraging cutting-edge technologies, including AI, WeGotCode simplifies complex  [... view WeGotCode profile ]
    Location
    Canton, Georgia
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $25,000 - $50,000
    View Profile

  • Orion Innovation

    IT solutions and services firm

    IT solutions and services firm

    We offer project services, solutions, managed services, and staff augmentation with a focus on mobile apps for iOS and Android as well as SharePoint and Documentum.  [... view Orion Innovation profile ]
    Location
    Princeton, New Jersey
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile
    5.0 5.0 (11)

  • INVID

    Solving business challenges!

    Solving business challenges!

    INVID is a renowned software engineering firm that delivers tailored software solutions to address business hurdles. Established in 2003 in San Juan, Puerto Rico, INVID has expanded its operations to encompass the United States and the Caribbean, with a primary focus on developing high-quality software that  [... view INVID profile ]
    Location
    Arlington, Virginia
    Number of Employees
    100 - 249
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $25,000 - $50,000
    View Profile
    5.0 5.0 (15)

  • Virtual Consonance

    Tough Times Never Last But Tough People Do

    Tough Times Never Last But Tough People Do

    We are a technology solutions company creating better solutions for our clients from all around the world. Our work with industries spanning across sectors like mobility, supply chain, software, web development, innovation and automation, artificial intelligence, you name it and we might have a solution for  [... view Virtual Consonance profile ]
    Location
    Harrisburg, Pennsylvania
    Number of Employees
    100 - 249
    Average Hourly Rate
    $65/hr
    View Profile

  • Alma Estrada

    Creating meaningful digital experiences that matter.

    Creating meaningful digital experiences that matter.

    My name is Alma Estrada based in Chicago, IL, USA. An experienced UX designer. I have a BA in Digital Marketing from North Park University. I'm a big proponent of accessible, useful, and usable design. I make a concerted effort to help create designs that can be enjoyed by everyone.  [... view Alma Estrada profile ]
    Location
    Chicago, Illinois
    Number of Employees
    Under 49
    View Profile

  • 4 Aces Technologies

    Innovating Tomorrow's Technology Today

    Innovating Tomorrow's Technology Today

    4 Aces Technologies offers cutting-edge IT services and software development solutions to help businesses thrive in a digital world.  [... view 4 Aces Technologies profile ]
    Location
    Ontario, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $1/hr
    View Profile

  • Augusto Digital

    AI Consulting For Businesses That Want Results Now

    AI Consulting For Businesses That Want Results Now

    Augusto Digital is an AI consulting firm that turns ambition into action. Since 2016, we've helped healthcare systems, manufacturers, and growth-stage companies implement AI that delivers measurable results, not just strategy documents. We build, deploy, and stay accountable to outcomes.  [... view Augusto Digital profile ]
    Location
    Grand Rapids, Michigan
    Number of Employees
    Under 49
    Average Hourly Rate
    $200/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile
    5.0 5.0 (9)

  • Kultprosvet

    We build dedicated teams and thriving products

    We build dedicated teams and thriving products

    Kultprosvet is a Dnipro, Ukraine based software development firm founded in 2011. It builds dedicated web and mobile development teams, focusing on full-cycle solutions UI/UX, front-end, back-end, project management, and QA. With expertise in Node.js, PHP/Laravel, React, Vue, and native mobile (iOS/Android  [... view Kultprosvet profile ]
    Location
    Bowling Green, Ohio
    Number of Employees
    50 - 99
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    4 Projects Listed
    View Profile
    4.6 4.6 (5)

  • Northern Lights Technology Development

    Your Ideas. Our Technology.

    Your Ideas. Our Technology.

    Northern Lights Technology Development is a global technology company that provides information technology and business process support services to improve performance, productivity, and user satisfaction; all while maximizing your technology budgets.  [... view Northern Lights Technology Development profile ]
    Location
    Minneapolis, Minnesota
    Number of Employees
    500 - 999
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
    View Profile

  • Meteor Labs

    Build Software Customers Love

    Build Software Customers Love

    Located in Boulder, CO, Meteor Labs provides high-quality UX design & software development for clients including start-ups and Fortune 100 companies.  [... view Meteor Labs profile ]
    Location
    Boulder, Colorado
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    11 Projects Listed
    View Profile
    5.0 5.0 (1)

  • What the Flutter

    Leading Flutter development agency

    Leading Flutter development agency

    What the Flutter is a software development company with top expertise in Flutter and Mobile technology. Our service is to provide extremely talented developers ready to solve the hardest business problems with Flutter.  [... see all What The Flutter reviews ]
    Location
    Middletown, Delaware
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    3 Projects Listed
    View Profile
    4.3 4.3 (1)

  • Xicom Technologies

    AI Development Company Building Scalable AI Solutions for Enterprises

    AI Development Company Building Scalable AI Solutions for Enterprises

    Xicom Technologies is a leading AI development company founded in 2002. With 20+ years of experience, 300+ skilled professionals, and 7,500+ projects delivered globally, we proudly serve 1,500+ clients across healthcare, finance, ecommerce, entertainment, and automotive industries.  [... see all Xicom Technologies reviews ]
    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed
    View Profile
    4.3 4.3 (1)
    1.0 1.0 (1)

  • ELIFTECH

    Your Trusted IT Partner

    Your Trusted IT Partner

    ELIFTECH thrives on taking a business idea and transforming it into a high-tech product. ELIFTECH designs, builds, tests, and launches software technology for a variety of industries. The company successfully creates software that connects people, devices, systems, and data in a seamless process.  [... view ELIFTECH profile ]
    Location
    Wilmington, Delaware
    Number of Employees
    100 - 249
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    10 Projects Listed
    View Profile
    4.9 4.9 (30)

  • Design Deca

    Strategy by design

    Strategy by design

    We are a group of Digital Fanatics across the globe who specializes in launching and revamping brands. We believe bespoke processes lie at the core of creative digital strategy, and that is what makes us one of the best custom web design agency. We believe in coming up with digital processes never seen or  [... view Design Deca profile ]
    Location
    Nashville, Tennessee
    Number of Employees
    100 - 249
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed
    View Profile

  • Tevpro

    Building future-proof software

    Building future-proof software

    We deliver transformative technologies to some of the worlds most recognized brands. We work with the top performance management vendors including OneStream, Angular, Ionic, Azure, React, Oracle to automate and optimize your business processes, and make your work simpler and more efficient.  [... view Tevpro profile ]
    Location
    Houston, Texas
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    4 Projects Listed
    View Profile
    5.0 5.0 (1)

  • Apptage

    Your Enterprise-Ready Partner in Apps, AI and Digital Transformation.

    Your Enterprise-Ready Partner in Apps, AI and Digital Transformation.

    Apptage, based in South Jordan, Utah, delivers end-to-end solutions in mobile apps, game dev, web dev, custom software, AI, e-commerce, cloud & data consulting and enterprise solutions helping businesses innovate faster, operate smarter and scale without limits.  [... view Apptage profile ]
    Location
    South Jordan, Utah
    Number of Employees
    100 - 249
    Average Hourly Rate
    $100/hr
    Portfolios Count
    9 Projects Listed
    View Profile

  • A-CX

    Designed for the future. Engineered today.

    Designed for the future. Engineered today.

    A-CX is a boutique software design and development partner empowering businesses focusing on Approachable AI and Secure Cloud solutions. We deliver user-centered software development services through cutting-edge design and robust engineering that drive smarter, scalable outcomes.  [... view A-CX profile ]
    Location
    San Jose, California
    Number of Employees
    Under 49
    Portfolios Count
    6 Projects Listed
    View Profile

Related Mobile App Development Specializations in the US

About The Author and Expert Reviewer

Content Specialist

selina@designrush.com

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.

Former Development Director

spotlight@designrush.com

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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