Top Application Modernization Services
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$5,000+$50 - $99 / hr2 - 9Milano, Italy
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See all 4 projectsKoent is a versatile technology solutions provider specializing in mobile app development and software modernization. Reviews highlight their strong project management skills and commitment to understanding client needs, with an exemplary customer engagement rate and timely delivery. Approximately 90% of reviewers commend Koent's effort to tailor solutions to specific business processes, though some desired more in-person meetings.
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$1,000+< $25 / hr2 - 9
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See all 2 projectsZTABS is a software development company specializing in designing and implementing complex web platforms and systems. They have received highly positive feedback for their work, with notable praise for their effective project management and clear communication, mentioned in 100% of reviews. Clients appreciate their availability, quick delivery, and the ability to accommodate dynamic project needs, although some suggest improvements in collaborative design tools.
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$5,000+$25 - $49 / hr2 - 9
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See all 1 projectsCOPODS DESIGN TECHNOLOGY SOLUTIONS LLP is a UI/UX design firm that excels in creating user interfaces through comprehensive discovery processes and direct client collaboration. They are praised for their expertise and entrepreneurial approach, meeting all project management expectations. While 100% of reviews express satisfaction with their work, clients advise maintaining documentation and budget adherence.
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$5,000+$25 - $49 / hr10 - 49Vinnytsia, Ukraine
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See all 3 projectsEvenmore is a front-end development company renowned for its expertise in providing skilled developers and effective solutions for projects involving technologies like React and Angular. Client feedback is overwhelmingly positive, with 100% of reviewers praising their problem-solving skills, timely delivery, and high-quality code. Their ability to simplify complex tasks and attention to detail are consistently highlighted.
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$1,000+< $25 / hr10 - 49Mira Bhayandar, India
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See all 2 projectsReputableTechnologies Pvt. Ltd. is an e-commerce and mobile app development company noted for its supportive and deadline-oriented team. With 100% of reviewers praising their project management and support, clients highlight their ability to meet deadlines and deliver quality, bug-free products at competitive prices.
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$1,000+< $25 / hr10 - 49Mumbai, India
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See all 1 projectsCodes 'n' Coffee Tech. is a software development company specializing in creating custom CRM and practice management solutions. The overall feedback from reviews is highly positive, with notable praise for their efficient project management and innovative UX design. Approximately 100% of reviewers highlight improvements in work processes, while some suggest more thorough initial testing.
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$5,000+$50 - $99 / hr10 - 49Warszawa, Poland
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See all 1 projectsH&K Soft Company is a software development firm specializing in back-end engineering and full-stack projects, particularly in the online education sector. The reviews highlight a high level of client satisfaction, emphasizing their flexibility, strong communication skills, and commitment to project success, with approximately 100% positive feedback regarding their attitude and teamwork.
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UndisclosedUndisclosed10 - 49Zagreb, Croatia
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See all 1 projectsIgnitech Solutions is a business and Agile consulting firm that excels in integrating Scrum and Agile practices within organizations. Their reviews are overwhelmingly positive, highlighting impressive culture alignment, on-time delivery, and exceptional project management. Notably, 100% of the feedback praised their ability to improve communication and organizational structure, leading to higher project success rates.
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$5,000+$25 - $49 / hr10 - 49Vancouver, Canada
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See all 1 projectsIT Kapital is a technology company specializing in developing automation systems for operational processes. Their services are highly praised, with 100% positive feedback for enhancing efficiency and maintaining quality standards. Clients appreciate their bilingual (Spanish and English) team and professional approach, though some suggest more guidance during the testing phase.
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$1,000+< $25 / hr10 - 49Gurugram, India
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See all 4 projects86 Agency is a versatile web development and digital solutions company known for delivering comprehensive services, including website design, full-stack development, and email campaign building. Reviews highlight their consistent communication and proactive project management, with 100% of clients praising their responsiveness and technical expertise. Clients appreciate their ability to meet milestones and deliver high-quality results efficiently, with no significant areas for improvement noted.
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$25,000+$150 - $199 / hr10 - 49
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See all 4 projectsCrux Digital is a software development company renowned for its UX/UI design, frontend architecture, and no-code solutions. With overwhelmingly positive feedback, 99% of survey respondents expressed satisfaction with their app prototypes. Clients appreciate Crux Digital's flexibility, project management efficiency, and domain expertise. However, minor improvements are suggested in delivery timelines and adaptability to larger corporations.
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$1,000+Undisclosed2 - 9
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See all 2 projectsBastaki Studio is a branding and web design company specializing in creating custom websites and optimizing SEO for businesses. The reviews highlight a 100% satisfaction rate, emphasizing their ability to significantly boost website traffic and visibility without additional advertising. Clients praise their professionalism, timely delivery, and deep commitment to understanding and aligning with client visions.
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$1,000+$25 - $49 / hr2 - 9Dubai, United Arab Emirates
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See all 1 projectsAvalency Studio is a web development company specializing in e-commerce solutions, such as Shopify storefronts and automated email systems. Their reviews are overwhelmingly positive, with 100% of feedback highlighting their speed, professionalism, and impactful delivery. Clients appreciate their efficient responses and proactive approach to meeting project needs.
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$25,000+$50 - $99 / hr2 - 9
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See all 6 projectsDigital Nomad Agency is a mobile app development company known for providing comprehensive solutions that cater to various digital needs, including app and web development. Their reviews reflect predominantly positive feedback, with 100% of reviewers praising their delivery speed, quality, and communication. Clients consistently highlight their expertise in Flutter development and their ability to meet deadlines, although a few suggested improvements in quality assurance services.
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$5,000+$25 - $49 / hr10 - 49Victoria, Canada
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See all 10 projectsSaveOnDev is a versatile software development company offering services in web and app development, frontend and backend technologies, and ongoing technical support. Across reviews, clients praise their effective communication, responsiveness, and project management skills. Approximately 90% of reviews highlight SaveOnDev's professionalism and ability to deliver projects efficiently and within budget. However, some clients suggest improvements in timeline clarity and content precision. Overall, SaveOnDev is highly regarded for their capability to collaborate with diverse sectors and deliver cost-effective solutions.
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$10,000+$200 - $300 / hr2 - 9
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See all 3 projectsSolved is a software development company specializing in app and platform development, particularly using technologies like AngularJS and Scala. They are highly praised for their professionalism, responsiveness, and exceptional project management skills, with 100% of reviewers noting their ability to deliver impressive and functional solutions that meet complex requirements. Clients highlight their remarkable expertise and ability to work within budget, with no significant areas for improvement identified.
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$50,000+$25 - $49 / hr50 - 249Bogotá, Colombia
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See all 1 projectsLucasian Labs is a technology consulting firm that specializes in comprehensive technical assessments and optimization strategies. The reviews highlight their deep technical knowledge and attention to detail, with 100% of the feedback being positive. Clients appreciate their effective communication and detailed analysis, leading to actionable improvement plans for digital platforms.
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$25,000+$100 - $149 / hr10 - 49Hilversum, Netherlands
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See all 2 projectsElastique is a technology company specializing in web and app development, with a strong focus on creating user-friendly and responsive digital platforms. Across their reviews, clients commend Elastique for their quality of development, creative problem-solving, and effective communication, with 100% positive feedback. Notably, 50% of reviewers highlight the accessibility and skill of their development team.
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$25,000+$50 - $99 / hr10 - 49Dnipro, Ukraine
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See all 5 projectsBlaize is a blockchain development company specializing in creating solutions such as token bridges, supply chain systems, and web and desktop applications. Reviewers consistently highlight Blaize's expertise in blockchain technologies, proactive communication, and strategic approach. More than 80% of reviewers commend their professionalism and timely delivery, while a third of reviewers note their flexibility and client-focused service as impressive.
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$10,000+$25 - $49 / hr2 - 9Sofia, Bulgaria
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See all 5 projectsVigored is a web development company known for designing custom-built WordPress sites. Their reviews reflect a 100% positive feedback rate, with clients praising their skill, responsiveness, and flexibility. Notably, 100% of reviewers commend their project management and personal touch, highlighting Vigored as a reliable partner that seamlessly integrates with client teams.
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$1,000+$25 - $49 / hr2 - 9
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See all 1 projectsAppteamPro is a mobile app development company that specializes in creating iOS applications with advanced functionalities, such as image recognition and social media integration. The company is consistently praised for its professionalism and proactive approach, with 100% of reviewers highlighting their exceptional project management and effective communication. Feedback indicates a strong focus on client satisfaction, ensuring successful outcomes beyond initial expectations.
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$5,000+$25 - $49 / hr2 - 9
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See all 1 projectsDeverno Inc. is a software development company specializing in custom software solutions using .NET, C#, and Microsoft SQL Server. Their reviews are overwhelmingly positive, with 100% of clients expressing satisfaction with their attention to detail and project management efficiency, as evidenced by consistent adherence to deadlines.
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$10,000+$25 - $49 / hr2 - 9Zaporizhzhia, Ukraine
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See all 1 projectsAcrovations is a mobile application development company with expertise in creating complex projects using technologies like Microsoft Azure and Xamarin. The overall feedback from clients is positive, highlighting effective communication and professional skills, with 100% of reviewers expressing satisfaction and recommending the company for future projects.
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$5,000+$25 - $49 / hr2 - 9
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See all 1 projectsBFlow is a development company specializing in custom Salesforce solutions. Feedback indicates strong satisfaction with their services, particularly noting their problem-solving abilities and excellent communication. No negative aspects were mentioned, with 100% of reviewers highlighting their understanding of business needs and commitment to client missions.
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Undisclosed< $25 / hr2 - 9
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See all 1 projectsCodeBridle is a web development company specializing in WordPress site construction. Based on client reviews, they consistently deliver projects on time, within budget, and with high-quality outcomes. All feedback was positive, highlighting their adherence to deadlines and effective communication, with 100% of reviewers noting their punctuality and budget management.
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$25,000+$150 - $199 / hr2 - 9
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See all 1 projectsBitprism LLC is a company specializing in Enterprise Application Modernization, offering services such as application and platform modernization. Their reviews are overwhelmingly positive, with 100% of reviewers highlighting their timely delivery and commitment to high standards. Clients appreciate their effective communication, with no areas identified for improvement.
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$10,000+Undisclosed2 - 9Houston, TX
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See all 1 projectsCrrraw Holdings LLC is a development company specializing in mobile app and backend solutions. According to the reviews, 100% of the feedback is positive, highlighting their excellent project management, fast responsiveness, and strong alignment with client values. Clients particularly appreciate their dedication to customer satisfaction and the seamless member experience they deliver.
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$10,000+$25 - $49 / hr50 - 249The Woodlands, TX
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See all 1 projectsWundertec is a Mexican-based company specializing in custom CRM development and UI design, primarily serving clients in Central America and the US. Most reviews highlight their flexibility and programming strengths, with 70% noting good collaboration and budget management. However, 30% suggest challenges with timing and proactive conceptual work.
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$50,000+$200 - $300 / hr10 - 49Loveland, CO
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See all 1 projectsRadial Development Group, LLC is a versatile software development company that effectively augments teams by addressing complex technical challenges such as dependency management and CI/CD pipelines. Notable strengths include professional communication and agile methodologies, with 100% of reviewers praising their problem-solving capabilities, though some suggest more frequent communication could enhance efficiency.
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$5,000+$50 - $99 / hr2 - 9Poznań, Poland
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See all 3 projectseCodile is a software development company that provides services such as app development and custom website creation. With a 100% positive feedback rate, clients consistently praise their strong development skills, responsiveness, and ability to understand project needs. Approximately 67% of reviewers highlighted eCodile's impressive communication and management skills, while 33% appreciated their quick response times and adaptability.
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List of the Top 15 Legacy Modernization Services
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$25,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
39.3/40.019.6/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
39.1/40.020/20 Reviews10/10 Clients & Experience9.1/10 Market PresenceService focus
25% Enterprise App Modernization75% Other -
$5,000+< $25 / hr1,000 - 9,999
Ability to deliver
35.9/40.016.6/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr1,000 - 9,999New York, NY
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr250 - 999Wrocław, Poland
Ability to deliver
35.4/40.015.8/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
40% Enterprise App Modernization60% Other -
$10,000+$25 - $49 / hr1,000 - 9,999Southborough, MA
Ability to deliver
37.2/40.017.2/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$50 - $99 / hr250 - 999Sacramento, CA
Ability to deliver
34.2/40.016.4/20 Reviews10/10 Clients & Experience7.8/10 Market PresenceService focus
80% Enterprise App Modernization20% Other -
$25,000+$25 - $49 / hr250 - 999Jaipur, India
Ability to deliver
38/40.018.2/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$100,000+$50 - $99 / hr1,000 - 9,999Oakland, CA
Ability to deliver
34/40.015.2/20 Reviews8.8/10 Clients & Experience10/10 Market PresenceService focus
45% Enterprise App Modernization55% Other -
$25,000+$25 - $49 / hr50 - 249Agoura Hills, CA
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$25 - $49 / hr1,000 - 9,999Orlando, FL
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$5,000+$50 - $99 / hr10 - 49Brno, Czech Republic
Ability to deliver
33.8/40.018.2/20 Reviews9.8/10 Clients & Experience5.7/10 Market PresenceService focus
60% Enterprise App Modernization40% Other -
$5,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
37.2/40.017.2/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$50 - $99 / hr50 - 249București, Romania
Ability to deliver
35.9/40.020/20 Reviews10/10 Clients & Experience5.9/10 Market PresenceService focus
35% Enterprise App Modernization65% Other -
$10,000+< $25 / hr250 - 999Ahmedabad, India
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Kraków, Poland
Ability to deliver
38.7/40.019/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Atlanta, GA
Ability to deliver
36.6/40.016.8/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
Undisclosed$150 - $199 / hr250 - 999London, England
Ability to deliver
36.4/40.017.2/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
38.3/40.018.4/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$100,000+$150 - $199 / hr50 - 249Southborough, MA
Ability to deliver
32.2/40.015.8/20 Reviews10/10 Clients & Experience6.4/10 Market PresenceService focus
50% Enterprise App Modernization50% Other -
$50,000+$150 - $199 / hr50 - 249Conshohocken, PA
Ability to deliver
36/40.016.2/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$25,000+$25 - $49 / hr250 - 999Kropyvnytskyi, Ukraine
Ability to deliver
38.9/40.019.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$10,000+$50 - $99 / hr250 - 999Hudson, OH
Ability to deliver
35.8/40.016.4/20 Reviews9.8/10 Clients & Experience9.6/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$100 - $149 / hr10 - 49Costa Mesa, CA
Ability to deliver
36.8/40.018/20 Reviews10/10 Clients & Experience8.8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
Undisclosed$25 - $49 / hr250 - 999Toronto, Canada
Ability to deliver
37.1/40.017.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr50 - 249San Francisco, CA
Ability to deliver
39.6/40.019.8/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$10,000+$50 - $99 / hr50 - 249Houston, TX
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
35.6/40.017.6/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
Undisclosed$25 - $49 / hr250 - 999Beijing, China
Ability to deliver
36.8/40.020/20 Reviews7.2/10 Clients & Experience9.6/10 Market PresenceService focus
15% Enterprise App Modernization85% Other
Top App Modernization Agencies
App modernization companies upgrade, refactor, or re-platform legacy software so it performs like a modern, cloud-ready application. They begin by auditing the existing codebase, infrastructure, and business requirements, then create a roadmap that might include re-architecting monolithic apps into microservices, containerizing workloads, or migrating databases to scalable cloud environments. Their end goal is to improve performance, security, and maintainability while minimizing downtime.
Most firms deliver a mix of strategic and technical services, such as:
- Legacy code assessment and technical debt analysis
- Re-platforming (e.g., on-prem to AWS, Azure, or GCP)
- Code refactoring and re-architecting into microservices
- API enablement and containerization (Docker, Kubernetes)
- UI/UX refresh and mobile optimization
- Data migration, cleansing, and database modernization
- Ongoing maintenance, DevOps, and cloud cost optimization
Pricing varies widely depending on project scope, complexity, and the tech stack involved. Clutch data shows most engagements range from $50,000 to $500,000 overall, with hourly rates between $75 and $200. Lighter projects like a UI facelift or limited refactoring tend to fall near the lower end, while full re-architectures involving cloud migration, data overhaul, and strict compliance can exceed $1 million. Always request a detailed proposal that outlines costs for discovery, development, testing, and support.
When choosing the best right app modernization for your business, consider these:
- Review expertise: Look for case studies that mirror your tech stack (Java, .NET, PHP) and industry compliance needs.
- Check client feedback: Verified Clutch reviews reveal how the team communicates, hits deadlines, and handles setbacks.
- Evaluate methodology: A strong partner will propose a phased approach that includes assessment, pilot, and rollout stages, each with clear success metrics.
- Validate certifications: Cloud partnerships (AWS, Microsoft, Google) signal deep platform knowledge.
- Assess cultural fit: Long projects require easy communication, mutual trust, and shared time zones or overlap.
These are some of the red flags that you should watch for when hiring an app modernization company:
- Guaranteed timelines before an audit: Accurate estimates require a code and infrastructure review.
- Lack of documentation: If they won’t commit to architecture diagrams, test plans, or knowledge transfer, future maintenance may suffer.
- One-size-fits-all solutions: Forcing every project onto a single cloud or framework can indicate limited expertise.
- Poor security practices: Outdated OWASP knowledge or no DevSecOps pipeline is a deal-breaker for critical systems.
- Minimal client references: A reputable firm should readily provide recent, relevant references.
Here are some questions you can ask app modernization companies before hiring them:
- Which modernization strategies (rehost, refactor, re-architect) do you recommend for our stack, and why?
- Can you share success metrics from similar projects—e.g., performance gains or cost reductions?
- What is your approach to minimizing downtime during migration?
- How will you ensure code quality and security (tooling, peer reviews, automated testing)?
- What support and knowledge-transfer do you provide after launch?
- How do you handle scope changes and unforeseen legacy issues?
Partnering with specialists accelerates time-to-value. Experienced teams bring proven frameworks, automation toolchains, and cloud partnerships that help reduce risk and shorten migration windows. Businesses often benefit from faster performance, lower maintenance costs, improved security compliance, and easier feature releases, all without overburdening internal teams.
A freelancer may handle small refactoring tasks cost-effectively but often lacks the resources for large-scale audits, DevOps, and 24/7 support. Agencies provide multidisciplinary teams including architects, developers, QA specialists, DevOps engineers, and project managers who can deliver end-to-end transformations with enterprise-grade SLAs.