Top Application Modernization Services
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$5,000+$50 - $99 / hr2 - 9Bengaluru, India
Services provided
See all 10 projectsKUMOHQ is a software development company that specializes in building custom web and mobile applications. Reviews highlight their professionalism, timely delivery, and ability to navigate challenges effectively, with 100% of feedback being positive. They are commended for their excellent communication, cultural alignment, and dedication to going above and beyond for their clients.
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$10,000+$25 - $49 / hr2 - 9Beograd, Serbia
Services provided
See all 3 projectsSally Engineering is a software development company specializing in front-end development and platform optimization. The reviews reflect a 100% positive sentiment, highlighting their strong communication, ability to integrate quickly into teams, and deliver high-quality work under tight deadlines. Approximately 60% of reviewers emphasize their proactive approach and commitment to partnership, with no major areas for improvement noted.
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$1,000+$25 - $49 / hr50 - 249
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See all 5 projectsXenon Apps is a custom mobile application development company, praised for delivering user-friendly and innovative apps. The reviews highlight a remarkable 100% satisfaction rate, with clients commending their timely delivery, project management, and ability to turn ideas into functional applications. However, some feedback suggests potential for enhancing creative features to further captivate users.
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UndisclosedUndisclosedFreelancerLee's Summit, MO
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See all 1 projectsTranscendent Software is a consulting firm specializing in providing advice and solutions for prototype development, patent research, and strategic project direction. The company has received 100% positive feedback, with clients praising their honesty, straightforward communication, punctuality, and excellent value. All reviewers emphasized their satisfaction with the service and timely problem-solving capabilities.
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$1,000+$50 - $99 / hr2 - 9København, Denmark
Services provided
See all 1 projectsFifium is a web development company specializing in creating personalized websites that reflect their clients' brands. Reviews highlight their strong project management skills and fair pricing strategy. Approximately 100% of the feedback mentions their effective communication and responsiveness, with their ability to maintain ongoing client support being a notable strength.
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$10,000+$50 - $99 / hr2 - 9
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See all 1 projectsXupe is a web and mobile app development company, known for its strategic input and collaborative project management. Receiving positive feedback, Xupe excels at adapting to client needs and offering valuable insights. While client expectation management could improve, 100% of clients appreciate their flexibility and strategic contributions.
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$25,000+$25 - $49 / hr50 - 249Gurugram, India
Services provided
See all 3 projectsOTS Solutions is a mobile application development company that provides services including design, implementation, and app functionality for both iOS and Android platforms. The reviews indicate a high level of professionalism and commitment, with 100% of clients appreciating their collaborative approach and attention to detail. While some communication challenges were noted, clients highly recommend OTS Solutions for their effective project management and successful delivery of applications.
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$10,000+< $25 / hr50 - 249Pune, India
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See all 3 projectsQuicSolv Solutions is a versatile software development company providing services including mobile app development and end-to-end CRM solutions. The reviews highlight QuicSolv's expertise in project management and adaptability, with 100% of reviewers commending their dedication and client-focused approach. Clients appreciate their ability to deliver within budget and timelines, demonstrating strong technical capabilities and effective communication.
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$1,000+$25 - $49 / hr2 - 9Jakarta, Indonesia
Services provided
See all 1 projectsDelos is a web development company known for delivering reliable and timely services, including website development and maintenance. They have received positive feedback for their on-time delivery and quick issue resolution, with 100% of reviewers highlighting their efficiency and reliability in communication and support.
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$5,000+$25 - $49 / hr2 - 9Punta del Este, Uruguay
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See all 1 projectsXenio is a machine learning development company praised for their strategic and execution capabilities, particularly in core technology projects. Reviews indicate strong communication skills, with 100% positive feedback highlighting their project management and ability to innovate. However, 20% of reviewers noted a language barrier, suggesting room for improvement in multilingual fluency.
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$5,000+$25 - $49 / hr2 - 9
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See all 1 projectsDrishna Technologies is a web application development company specializing in both frontend and backend technologies. Their team, including a CTO and multiple developers, receives highly positive feedback, with 100% of reviewers praising their energetic team and effective workflow. Clients appreciate their support, resulting in successful project completions.
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$5,000+$25 - $49 / hr10 - 49Delhi, India
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See all 2 projectsMomenttext AI is a technology company specializing in AI and machine learning solutions, particularly in natural language processing and computer vision. Reviews highlight their expertise, dedication, and seamless integration with client teams, leading to successful deployments. 100% of feedback was positive, emphasizing timely delivery and effective communication, though it's noted they should scale for handling multiple projects concurrently.
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$10,000+$50 - $99 / hr10 - 49San Francisco, CA
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See all 1 projectsStreamline Social is a UI/UX design company that aids businesses in creating user-friendly and presentable mobile applications. The overall feedback is positive, highlighting their resourcefulness and willingness to explore different solutions. While 100% of reviewers appreciate their quality work, some suggest improvements in their speed. The ongoing collaboration reflects their commitment to project success.
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$50,000+$100 - $149 / hr10 - 49
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See all 1 projectsSilicon Valley Insight is a custom software development company specializing in complex backend systems and quiz software solutions. All reviews indicated positive feedback, highlighting their proactive communication and ability to exceed expectations. They have successfully engaged over 40,000 respondents for a client's quiz, showcasing their impactful results and effective project management skills.
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Undisclosed$25 - $49 / hr50 - 249Pune, India
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See all 2 projectsInfoTechBrains CloudTech is a website development and maintenance company renowned for its robust technical solutions tailored to client needs. Based on reviews, they deliver 100% of projects on time and maintain proactive communication. While clients are highly satisfied, with 100% positive feedback, there is a suggestion for more structured performance analytics to enhance decision-making.
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$25,000+$100 - $149 / hr2 - 9Phoenix, AZ
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See all 4 projectsVelocity Labs is a software development company specializing in creating and maintaining custom applications and platforms using Ruby on Rails. Across their reviews, 100% of the feedback is positive, highlighting their reliability, innovation, and effective project management. Clients commend them for delivering high-quality solutions and having a strong communication process, with 75% of reviews noting their impressive problem-solving capabilities.
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$1,000+$100 - $149 / hr2 - 9İstanbul, Türkiye
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See all 1 projectsBixcod Software and Consulting is a software development company known for delivering exceptional service in Turkey. They have positively impacted client businesses, as evidenced by one client's 85% sales increase post-project. Reviewers consistently highlight their effective communication and thorough project execution, resulting in unanimously positive feedback.
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$10,000+$150 - $199 / hr2 - 9
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See all 1 projectsJoen.io is a development company specializing in creating interactive mobile applications. Reviews indicate that they deliver high-quality, complex products that meet client expectations, with an emphasis on honest partnerships and effective communication. Approximately 100% of the feedback highlights their reliability, although some suggest improvements in project management. Overall, Joen.io is praised for their professionalism and ability to meet deadlines within budget constraints.
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$25,000+Undisclosed50 - 249Surat, India
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See all 2 projectsTriveni Global Software Services LLP is a web development company specializing in building marketing websites, e-commerce platforms, and offering social media marketing services. Their reviews are overwhelmingly positive, with clients praising their responsiveness, timely delivery, and effective integration of graphics, web development, and marketing. Approximately 100% of reviewers highlight the company's excellent value for cost and cultural alignment.
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$5,000+< $25 / hr10 - 49
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See all 5 projectsNPS SOFTWARES LLP is an information technology company specializing in Salesforce resources, AI automation, Health Cloud, and mobile app development. Reviews indicate a 100% positive sentiment, with clients praising their professionalism, timely delivery, and technological expertise, with 100% of reviewers highlighting their reliable and skilled team.
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$5,000+$50 - $99 / hr2 - 9Bengaluru, India
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See all 1 projectsAccode Software Pvt. Ltd. is a mobile and web development company recognized for its expertise in React, React Native, and Firebase. All reviews highlight their timely delivery and effective communication, with particular praise for the technical knowledge of their founder, Bhavish. The reviews do not indicate any areas for improvement, reflecting 100% positive feedback.
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Undisclosed< $25 / hr2 - 9
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See all 2 projectsGreenCode Labs is a dynamic technology development company that specializes in creating custom digital platforms and robust IT infrastructures for diverse industries, including gaming and financial services. Their reviews reflect a strong focus on delivering projects on time and offering exceptional client service, with 100% of reviewers praising their cost-effectiveness and dedication to client needs.
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UndisclosedUndisclosed2 - 9Encinitas, CA
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See all 1 projectsAgency73 is a software development company specializing in custom applications and analytics solutions. Reviewers commend their adaptability, professionalism, and ability to deliver high-quality work under tight deadlines. Notably, 100% of reviewers highlight their collaboration and integration into client teams, while some note potential challenges due to the company's size. Overall, 90% of feedback is positive, emphasizing their security consciousness and effective project management.
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$10,000+$100 - $149 / hr2 - 9Columbus, OH
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See all 1 projectsSoftware Verde, LLC is a software development company specializing in integrating Python APIs into complex image processing pipelines. According to reviews, the company excels in clear communication and efficient project management, consistently delivering projects on time and under budget. Feedback is overwhelmingly positive, with 100% of reviewers expressing satisfaction with their experience.
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$1,000+$50 - $99 / hr2 - 9
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See all 1 projectsDarkwater Digital is a digital marketing and web development company specializing in enhancing web presence and design. The feedback is overwhelmingly positive, with clients praising their responsiveness, cost-effectiveness, and ability to improve Google rankings. Approximately 100% of reviewers commend their professional and personal service, leading to increased client inquiries and satisfaction.
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$1,000+$25 - $49 / hr2 - 9Toronto, Canada
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See all 1 projectsSummer Digital is a web development company specializing in website revamps and digital strategy enhancement. The reviews highlight their exceptional responsiveness and agility in project turnaround. With a 100% positive feedback rate, clients particularly commend their prompt communication and ability to deliver satisfactory results swiftly.
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$1,000+< $25 / hr10 - 49
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See all 2 projectsSpikeway Technologies is a web development company known for designing and building robust portals, with a focus on B2B and B2C solutions. The company received positive feedback for its structured project management and on-time delivery, with 100% of reviewers praising their professional, interactive team and uncompromising service quality.
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$5,000+$25 - $49 / hr10 - 49
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See all 2 projectsICT Information Technologies is an IT services company specializing in automating and managing user demands, providing first and second-level IT support. The overall feedback is highly positive, with clients reporting a 50% increase in demand management speed and improved customer satisfaction. Reviewers consistently highlight their excellent project management and communication skills, with no significant areas for improvement mentioned.
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$5,000+< $25 / hr10 - 49
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See all 2 projectsVillage IT Services Private Limited is a versatile IT services company specializing in mobile and web app development, UI design, and backend solutions. Feedback indicates high satisfaction, with clients praising their adaptability and communication skills. Approximately 90% of reviewers commend their technical expertise, although a few suggest improvements in dedicated QA resources.
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$25,000+$50 - $99 / hr10 - 49Florianópolis, Brazil
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See all 2 projectsJungsoft is a technology services company specializing in UX design, backend development, and system integration. They have received overwhelmingly positive feedback, with 100% of reviewers praising their creativity, efficiency, and the exceptional quality of their deliverables. Clients commend their ability to deliver complex projects promptly and appreciate their collaborative and enjoyable work sessions.
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List of the Top 15 Legacy Modernization Services
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$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 - 9,999Kraków, Poland
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 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 -
$50,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
36.3/40.018.6/20 Reviews9.9/10 Clients & Experience7.8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$25,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
35.2/40.017.2/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
45% Enterprise App Modernization55% 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 / 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 -
$10,000+$100 - $149 / hr250 - 999London, England
Ability to deliver
37.8/40.018.6/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$50 - $99 / hr1,000 - 9,999Warszawa, Poland
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 - 9,999Atlanta, GA
Ability to deliver
37.4/40.017.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
Ability to deliver
38.8/40.019/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
11% Enterprise App Modernization89% Other -
$50,000+$150 - $199 / hr50 - 249Conshohocken, PA
Ability to deliver
36.4/40.016.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
30% Enterprise App Modernization70% 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 -
UndisclosedUndisclosed1,000 - 9,999Atlanta, GA
Ability to deliver
34.1/40.016.8/20 Reviews10/10 Clients & Experience7.3/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
38/40.018.4/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$150 - $199 / hr50 - 249Montréal, Canada
Ability to deliver
37.9/40.018.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$50 - $99 / hr50 - 249Rybnik, Poland
Ability to deliver
35.7/40.017.8/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$25,000+$25 - $49 / hr250 - 999Frisco, TX
Ability to deliver
37.1/40.017.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$10,000+$25 - $49 / hr250 - 999Stuttgart, Germany
Ability to deliver
38.4/40.018.8/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$10,000+$50 - $99 / hr50 - 249Lakewood, CO
Ability to deliver
39.4/40.019.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
35.3/40.016.8/20 Reviews10/10 Clients & Experience8.6/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$10,000+$25 - $49 / hr50 - 249Portland, OR
Ability to deliver
35.3/40.017/20 Reviews10/10 Clients & Experience8.3/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$1,000+< $25 / hr50 - 249Ahmedabad, India
Ability to deliver
37.3/40.018.4/20 Reviews9.6/10 Clients & Experience9.3/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr250 - 999Unterschleißheim, Germany
Ability to deliver
35.1/40.018/20 Reviews10/10 Clients & Experience7.1/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
36.9/40.017.8/20 Reviews10/10 Clients & Experience9.1/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$100 - $149 / hr50 - 249Belfast, Northern Ireland
Ability to deliver
36.9/40.017.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$100,000+$25 - $49 / hr50 - 249Melbourne, Australia
Ability to deliver
32.9/40.016.4/20 Reviews8.4/10 Clients & Experience8.1/10 Market PresenceService focus
40% Enterprise App Modernization60% Other -
$50,000+$50 - $99 / hr250 - 999Palo Alto, CA
Ability to deliver
36.3/40.016.6/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$25,000+$50 - $99 / hr50 - 249Kraków, Poland
Ability to deliver
36.7/40.017/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$50 - $99 / hr250 - 999Warszawa, Poland
Ability to deliver
34.6/40.016/20 Reviews10/10 Clients & Experience8.6/10 Market PresenceService focus
20% Enterprise App Modernization80% 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.