Top Application Modernization Services
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$5,000+$25 - $49 / hr50 - 249Sofia, Bulgaria
Services provided
See all 13 projectsAionys is a company specializing in Enterprise App Modernization services, delivering solutions that enhance operational efficiency and safety in complex industries. Feedback is overwhelmingly positive, with 100% of reviewers highlighting their effective project management and ability to meet deadlines, ultimately achieving a seamless digital transformation for their clients.
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$10,000+$50 - $99 / hr10 - 49Łódź, Poland
Services provided
See all 11 projectsMakimo is a software development company specializing in custom app development and strategic technology consulting. Their reviews highlight their technical expertise in Python and Django, responsiveness, and strong project management skills. Impressively, over 90% of clients commend their effective communication and problem-solving capabilities, while around 80% appreciate their ability to adapt to evolving project needs and deliver on time.
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$50,000+$25 - $49 / hr10 - 49Novi Sad, Serbia
Services provided
See all 6 projectsBDIT Engineering is a versatile software development company specializing in augmenting internal teams with skilled engineers for tasks such as web, iOS, and Android app development, as well as data engineering. Reviews consistently highlight their high-quality deliverables, effective communication, and ability to meet deadlines, with 100% of reviewers noting satisfaction and no areas for improvement mentioned. Their technical expertise and cost-effective solutions are widely praised.
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$10,000+$25 - $49 / hr10 - 49Grasbrunn, Germany
Services provided
See all 8 projectsEvinent GmbH is a versatile software development company offering services in web and mobile application development, e-commerce, and data warehousing. With a focus on quality and flexibility, 100% of reviewers praised their professionalism and responsiveness. Clients appreciated their ability to adapt quickly and deliver projects on time, making Evinent GmbH a reliable partner for complex development needs.
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$25,000+$50 - $99 / hr50 - 249Buenos Aires, Argentina
Services provided
See all 4 projectsAdviting as a versatile IT consulting firm, Adviters offers services in software development, system improvement, and process digitalization. Reviews indicate a strong alignment with client values and a reputation for delivering high-quality work. While 75% of feedback highlights their timely delivery and effective communication, some reviewers mention the need for better documentation and resource selection.
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$25,000+$150 - $199 / hr10 - 49New York, NY
Services provided
See all 14 projectsDef Method is a versatile software development company specializing in creating customized web and mobile applications using technologies like Ruby on Rails. Feedback highlights their strong project management skills, with 100% of reviewers praising their communication and responsiveness. About 86% of reviews emphasize their ability to understand clients' business needs and provide strategic guidance, while 14% suggested improvements such as clearer upfront expectations. Overall, Def Method is highly recommended for their technical expertise and customer service.
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$25,000+$100 - $149 / hr10 - 49Barcelona, Spain
Services provided
See all 7 projectsSystemSeed is a digital solutions company specializing in web development, UX design, and learning management systems, often leveraging Drupal as a foundation. Their reviews reveal a consistent theme of strong project management, adaptability, and a proactive approach to understanding client needs. Approximately 90% of reviewers highlighted their effective communication and collaboration skills, while 80% noted their ability to align with client values and goals.
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$25,000+$100 - $149 / hr10 - 49Newquay, England
Services provided
See all 1 projectsflowmoco is a software development company that specializes in creating bespoke digital solutions, such as a collaborative coastal safety app. The overall feedback is highly positive, with 100% of reviewers praising their timely delivery and exceptional project management. Clients commend flowmoco for their commitment and belief in the projects they undertake, with no areas for improvement mentioned.
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$5,000+< $25 / hr50 - 249Ahmedabad, India
Services provided
See all 35 projectsIT Path Solutions is a multifaceted IT development company specializing in web and software development, offering services such as website creation, platform development, and custom coding. Across the reviews, 100% of clients appreciated their cost-effective services, with 90% highlighting their strong project management skills and timely delivery. Clients also praised their clear communication, adaptability, and collaborative approach.
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Undisclosed< $25 / hr50 - 249Chennai, India
Services provided
See all 10 projectsAgriya is a versatile software development company recognized for providing custom web and mobile application solutions. Feedback from various reviewers highlights Agriya’s commitment, technical expertise, and effective communication. Approximately 80% of reviewers appreciated their dedication and quality of service, though some noted areas for improvement in design accuracy and testing. Overall, Agriya is highly regarded for delivering cost-effective and responsive development services.
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$10,000+$25 - $49 / hr50 - 249Noida, India
Services provided
See all 3 projectsUmbrella Infocare is a cloud service provider specializing in AWS cloud infrastructure, hosting, and managed services. The company is highly regarded for its expertise, professionalism, and customer-focused approach, achieving a 99.9% uptime and reducing cloud expenses by 27% for clients. An impressive 100% of reviews highlight their dedication and effective communication.
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$25,000+$50 - $99 / hr10 - 49Kyiv, Ukraine
Services provided
See all 1 projectsNika Craft is a technical and UI development company recognized for its expertise in JavaScript, node.js, and UI improvements. Reviews highlight their flexibility, effective communication, and alignment with human values in business. While 100% of feedback praised their adaptability and technical skills, budget constraints limited their project potential. Overall, Nika Craft made a significant positive impact on client projects.
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$10,000+$25 - $49 / hr10 - 49
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See all 4 projectsEvalogical Technologies is a versatile technology company specializing in mobile app development, e-commerce solutions, and website design. The company consistently receives high praise for delivering user-friendly, high-quality applications and websites on time, with 100% of reviewers highlighting their responsiveness and creativity. Clients appreciate their commitment to quality and effective project management, with most reviews noting an excellent fit in terms of budget and company culture.
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$25,000+Undisclosed250 - 999Podgorica, Montenegro
Services provided
See all 2 projectsHaulmont Technology is a software development firm specializing in creating bespoke solutions, such as custom print service applications for Java web environments. Reviews highlight their expertise in Java libraries and commend their efficient communication and timely delivery. The feedback is overwhelmingly positive, with 100% of reviewers expressing satisfaction and noting no areas for improvement.
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$50,000+$200 - $300 / hr10 - 49New York, NY
Services provided
See all 6 projectsLightmatter is a versatile technology company specializing in product development, web design, and UX/UI design. With an 80% positive feedback rate, clients consistently praise their expertise, flexibility, and project management skills. About 70% of reviewers highlight their ability to meet deadlines efficiently, while 60% appreciate their depth of engagement and transparency. Lightmatter is commended for its comprehensive approach and ability to adapt to diverse industry needs.
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$10,000+$25 - $49 / hr10 - 49Oviedo, Spain
Services provided
See all 6 projectsABAMobile is a mobile app development company known for its expertise in creating tailored app solutions, including NFC technology and management backends. The company receives positive feedback for its project management, timely delivery, and personalized service, with 100% of reviewers appreciating their communication and adaptability. While they excel in understanding client needs, some suggest they could offer more proactive advice on project improvements.
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$10,000+$25 - $49 / hr50 - 249Bengaluru, India
Services provided
See all 4 projectsAufait Technologies Pvt. Ltd is a technology solutions company specializing in SharePoint and mobile app development. The company boasts a 100% satisfaction rate among users and management, with clients praising their quick problem-solving skills, effective project management, and flexible approach. However, some feedback suggests a need for increased regional resource deployment.
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$25,000+$50 - $99 / hr50 - 249San Jose, CA
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See all 5 projectsMW2 Consulting is a versatile technology consulting firm that excels in e-commerce platform development, particularly using Magento and Ruby on Rails. The company receives overwhelmingly positive reviews, with clients highlighting their technical expertise, effective project management, and proactive approach to problem-solving. Over 90% of reviewers commend their commitment to client goals and seamless integration into project teams, while around 80% emphasize their ability to address complex technical challenges.
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$5,000+$100 - $149 / hr10 - 49Plymouth, MN
Services provided
See all 5 projectsCirrius Solutions is a strategic consulting firm specializing in Salesforce implementation and CRM solutions. Reviews highlight their flexibility, professional project management, and ability to integrate seamlessly with client teams. Approximately 90% of feedback emphasizes their strategic consultancy and adaptability. Clients appreciate their proactive communication, strong leadership, and the ability to handle complex projects, while maintaining a focus on continuous improvement and achieving client goals.
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$5,000+$25 - $49 / hr10 - 49Guadalajara, Mexico
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See all 3 projectsNTD Software is a software development company highly praised for its project management, timely delivery, and effective communication. Clients commend their professionalism, commitment, and understanding of client needs, with 100% positive feedback highlighting their ability to deliver on budget and meet project goals. Notably, 67% of reviewers appreciated their skilled team and customer support.
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$10,000+$25 - $49 / hr250 - 999Beverly Hills, CA
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See all 47 projectsIndiaNIC Infotech Limited is a versatile software development company offering services in web and mobile app development, as well as eCommerce solutions. The reviews reflect a mixed reception with approximately 60% positive feedback highlighting their reliability, teamwork, and project management, while 40% indicate areas for improvement, particularly in communication and quality of deliverables.
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$1,000+$25 - $49 / hr10 - 49Kamianets'-podil's'kyi, Ukraine
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See all 2 projectsITPromotion LLC - Software Solutions is a versatile software development company offering services in website and mobile application development. The reviews highlight an overall positive experience, with 100% of clients noting timely project delivery and effective communication. Clients appreciate their professionalism and direct team access, although there were minor concerns about the competence of some developers in specific cases.
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$100,000+$100 - $149 / hr50 - 249Lehi, UT
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See all 14 projectsKahoa, formerly known as SolutionStream, is a versatile software development company offering services such as digital transformation, mobile app development, and custom software solutions. Feedback from reviews highlights their effective project management, attention to detail, and capacity to deliver projects on time and within budget, with approximately 90% emphasizing their professionalism and expertise. Overall, clients express satisfaction with their technical skills and proactive communication.
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$25,000+$50 - $99 / hr50 - 249Lukavica, Bosnia and Herzegovina
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See all 6 projectsSingularity is an IT modernization company specializing in Enterprise Application Modernization and software platform update services. The reviews indicate a high level of client satisfaction, with 100% positive feedback highlighting their ability to enhance platforms, implement new features, and improve security. Reviewers commend Singularity for timely delivery and their ability to provide necessary skills.
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$5,000+< $25 / hr50 - 249Skokie, IL
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See all 14 projectsHoff & Mazor is a company specializing in Enterprise App Modernization, offering comprehensive software modernization services to enhance user engagement and retention. Reviews indicate a high level of satisfaction, with user engagement increasing by 35% and retention by 40%. Clients appreciate their commitment to user-centric design and transparent communication, although no specific areas for improvement were mentioned.
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$10,000+$50 - $99 / hr10 - 49Vicenza, Italy
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See all 4 projectsHeveloon ltd is a custom software development company that specializes in creating applications, algorithms, and marketplaces with technologies such as AWS, Python, and JavaScript. The company receives high praise for its professionalism and flexibility, with approximately 90% of reviewers highlighting their project management skills and responsiveness. Though timelines can be challenging due to resource constraints, clients are impressed by the team's technical expertise and client-focused approach.
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$10,000+$25 - $49 / hr10 - 49
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See all 6 projectsArccus Inc. is a versatile development company specializing in mobile and web applications. With a 100% satisfaction rate, their clients commend their effective project management, timely delivery, and customer-oriented communication. Notably, 80% of reviews highlight their excellent alignment with client values, emphasizing their dedication to understanding and delivering on client needs, resulting in improvements such as a 75% increase in website traffic and streamlined operations.
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$5,000+$50 - $99 / hr50 - 249Paris, France
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See all 5 projectscode.store is a versatile development company specializing in CMS migrations, digital platform creation, and mobile app development. Reviewers frequently commend their flexibility, responsiveness, and effective project management. Approximately 80% of reviews highlight their adaptability and ability to meet expectations, while 70% mention their strong communication and project management skills. However, some reviews suggest improvements in documentation and visibility on bug resolution timelines.
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$10,000+$150 - $199 / hr10 - 49Houston, TX
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See all 4 projectsOptimum Consultancy Services is a versatile digital solutions provider, offering web development, SEO, digital marketing, and project management services. Reviews reflect 100% satisfaction with their exceptional client service, responsiveness, and commitment to quality. Notably, 75% of reviewers highlight their impressive project management and communication skills, underscoring their role as a reliable and professional partner.
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$25,000+$100 - $149 / hr250 - 999Chicago, IL
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See all 14 projectsBuild BetterApp | Chicago’s Top Mobile App Development Company excels in developing innovative, user-centric mobile and web applications that cater to diverse business needs. With 100% of reviewers highlighting their client-centric approach and innovative problem-solving, the company maintains high satisfaction ratings, evidencing a commitment to quality and timely delivery, often exceeding client expectations.
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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.