Top Cross Platform App Developers
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$10,000+$25 - $49 / hr10 - 49Cherkasy, Ukraine
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See all 7 projectsPixelGrow is a Mobile App Development company specializing in creating tailored mobile solutions, including iOS and Android development. Clients praise their efficient communication, problem-solving abilities, and deep understanding of project needs. An impressive 100% of reviewers commend their responsiveness and the high quality of their app functionalities and user experience.
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$10,000+$25 - $49 / hr50 - 249Ahmedabad, India
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See all 2 projectsBlobstation Inc is a versatile software development company specializing in staff augmentation and web-based solutions. The reviews highlight their expertise in delivering timely and effective solutions, with 100% of reviewers praising their technical proficiency and agile project management. Clients commend Blobstation for their ability to integrate seamlessly with teams and adapt to changes, although one noted improvement could be in parallel QA processes.
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$1,000+< $25 / hr10 - 49
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See all 4 projectsAppok Infolabs is a Mobile App Development company praised for its professional approach and quick support in transforming concepts into reality. They effectively delivered a mobile app and website for a community platform, with feedback showing a positive experience from clients. Impressively, 100% of reviewers highlighted their seamless communication and strong project management skills.
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$10,000+$25 - $49 / hr50 - 249Hanoi, Vietnam
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See all 9 projectsSphinx Jsc is a distinguished Mobile App Development company known for delivering timely and effective solutions across various platforms, including iOS and Android. With 100% positive feedback from reviews, clients consistently praise their punctual delivery, clear communication, and responsiveness. Notably, 100% of reviewers highlight their budget-friendly pricing and value for cost.
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$5,000+$25 - $49 / hr50 - 249Kyiv, Ukraine
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See all 4 projectsOne Logic Soft is a software development company specializing in front-end and back-end solutions, mobile app development, and website creation. Across various projects, they have received overwhelmingly positive feedback, with approximately 90% of reviewers highlighting their technical expertise and project management capabilities. Clients consistently commend their responsiveness, adherence to deadlines, and ability to deliver high-quality products that meet or exceed expectations.
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$10,000+$100 - $149 / hr10 - 49King of Prussia, PA
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See all 6 projectsFynydd is a technology solutions company specializing in custom web development, SaaS platforms, and IT infrastructure services. With a focus on flexibility and understanding client needs, 100% of reviews highlight their responsive project management and ability to tailor solutions effectively. Clients praise Fynydd's commitment to timely delivery and ongoing support, making them a trusted partner for complex technical challenges.
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$25,000+$25 - $49 / hr50 - 249Warszawa, Poland
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See all 7 projectsOn The Spot Development is a mobile application development company with expertise in frontend, mobile, and QA development. Their services are well-regarded, with reviews highlighting professionalism and high value for cost. Approximately 100% of reviewers describe their experience as positive, appreciating their efficient candidate selection process and reliable support in managing development needs, allowing seamless project execution.
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$25,000+$100 - $149 / hr10 - 49Toronto, Canada
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See all 15 projectsQuantum Mob - Out of Business was a mobile app development company known for its exceptional design and engineering skills, with a strong emphasis on mobile software development. The company received overwhelmingly positive feedback, with clients praising their professionalism, project management, and ability to deeply understand complex business needs. However, there were some concerns regarding post-project availability and invoicing practices.
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$5,000+$50 - $99 / hr10 - 49Puchong, Malaysia
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See all 2 projectsSegWitz specializes in Mobile App Development, particularly for iOS and Android platforms. The overall feedback highlights their proficiency and creativity in providing effective solutions, although there are suggestions for improving development timeliness. Clients appreciate their cooperative nature and the ability to understand and address potential problems promptly.
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$5,000+$50 - $99 / hr10 - 49Stockholm, Sweden
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See all 18 projectsSlashdev is a proficient mobile app development company known for its expertise in iOS and Android development. With a consistent track record of delivering projects on time and efficiently, 100% of reviewers commend their responsiveness and talent pool. Clients especially appreciate their flexibility, cost-effectiveness, and professional service, making them a reliable choice for application development projects.
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$1,000+$25 - $49 / hr250 - 999Lahore, Pakistan
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See all 21 projectsArhamSoft LLC is a versatile company specializing in mobile app development, offering services for both iOS and Android platforms. The reviews highlight their strong project management skills, responsiveness, and ability to deliver on technically challenging projects, with 100% of reviewers expressing satisfaction with their performance and recommending them for their professionalism and adaptability.
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$5,000+$25 - $49 / hr10 - 49Rajkot, India
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See all 23 projectsVirtuous Techlogic is a Mobile App Development company noted for its comprehensive technical expertise and product-focused approach. Their services, including iOS and Android Development, consistently receive positive feedback, with over 90% of reviews highlighting their seamless project management and innovative solutions. Clients appreciate their ability to balance technical execution with practical business insights, making them a preferred partner for complex projects.
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$25,000+$25 - $49 / hr50 - 249Yerevan, Armenia
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See all 14 projectsIMEA Systems | Software Development is a Mobile App Development company known for delivering robust mobile applications on both Android and iOS platforms. Their services have received highly positive feedback, with clients applauding their responsiveness and efficiency, particularly noting their ability to deliver functional solutions swiftly and effectively. One reviewer highlighted their straightforward approach, although suggesting a monthly review could be beneficial.
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$25,000+$50 - $99 / hr50 - 249Ahmedabad, India
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See all 13 projectsCapermint Technologies is a Mobile App Development company specializing in creating applications for various platforms, including iOS and Android. They excel in game development and innovative app solutions, with approximately 90% of feedback being positive. Reviewers frequently commend their professionalism, quality of work, and collaborative approach, with about 70% highlighting their effective communication and adaptability to client needs.
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$5,000+$25 - $49 / hr50 - 249Chicago, IL
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See all 22 projectsTechAvidus is a versatile mobile app development company skilled in creating customized applications for iOS and Android platforms while also offering web development and digital marketing services. The overall feedback highlights their strong project management, technical competence, and excellent communication. With 100% of reviewers appreciating their responsiveness and ability to deliver projects on time and within budget, TechAvidus is highly recommended for its value and customer-centric approach.
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$25,000+$25 - $49 / hr10 - 49Yerevan, Armenia
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See all 14 projectsNextStack is a mobile app development company that excels in creating iOS and Android applications. Across the reviews, 90% highlight their technical expertise, timely delivery, and proactive approach. Clients praise their flexibility, communication, and ability to provide creative solutions and high-quality results, with 85% noting a strong alignment of company culture and values.
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$5,000+$25 - $49 / hr50 - 249Noida, India
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See all 13 projectsOmnist Techhub Solutions Private Limited specializes in Mobile App Development, delivering high-quality iOS and Android solutions with a strong focus on UI/UX design and project management. Reviewers consistently praise their responsiveness and ability to meet deadlines, with 100% of feedback highlighting their client satisfaction and project success. Despite minor initial communication challenges, clients appreciate their dedication and adaptability.
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Undisclosed< $25 / hr10 - 49Surat, India
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See all 5 projectsCodeX Lancers is a Mobile App Development company specializing in providing tailored solutions for various industry needs. Across four detailed reviews, clients praised their project management, responsiveness, and commitment to deadlines, with 100% of the reviewers noting satisfaction with communication and cost-effectiveness. Key strengths include problem-solving, meeting timelines, and delivering high-quality applications across iOS and Android platforms.
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$25,000+$150 - $199 / hr10 - 49London, England
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See all 11 projectsBit Zesty is a software development company specializing in Ruby on Rails solutions, known for delivering high-quality, reliable services. Their reviews highlight a 100% satisfaction rate, emphasizing their professionalism, adaptability, and expertise. Reviewers frequently commend Bit Zesty for their excellent communication, timely delivery, and personalized approach, with 80% of clients noting their impressive project management and the ability to exceed expectations consistently.
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$5,000+$25 - $49 / hr10 - 49Bielsko-Biała, Poland
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See all 22 projectsDa Vinci Studio is a distinguished Mobile App Development company known for its proficiency in creating applications tailored to diverse industries. The company has received overwhelmingly positive feedback, with 100% of reviewers commending their professionalism, effective communication, and ability to meet client needs. Clients have notably praised their capability in Android and iOS Development, emphasizing their commitment and swift execution.
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$5,000+< $25 / hr50 - 249Gurugram, India
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See all 8 projectsEnuke Software Pvt. Ltd. is a Mobile App Development company that excels in iOS and Android Development. Reviews highlight their technical expertise, seamless workflow, and effective communication, with 100% of clients noting satisfaction with project outcomes and timely delivery. Their robust systems and flexibility in handling client feedback further enhance their reputation for quality service.
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$1,000+< $25 / hr50 - 249New Delhi, India
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See all 10 projectsTRYNOCODE is a Mobile App Development company known for its expertise in creating high-quality iOS and Android applications. Clients praise its efficient project management and professional communication, with 100% of reviews highlighting timely delivery and innovative problem-solving. While some suggest faster development in certain phases, the company's dedication to quality and alignment with client goals is consistently noted.
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$10,000+$50 - $99 / hr10 - 49Zagreb, Croatia
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See all 4 projectsCodebooq is a comprehensive Mobile App Development company excelling in iOS and Android development, as well as web and embedded software engineering. The reviews highlight Codebooq's proactive approach and ability to deliver projects on time, with 100% of reviewers praising their full-spectrum development capabilities and alignment with company values, although some suggest more precise timeline definitions.
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$10,000+$50 - $99 / hr10 - 49Vilnius, Lithuania
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See all 9 projectsVilantis is a proficient Mobile App Development company specializing in iOS and Android Development. With a 100% positive feedback rate, clients commend their technical expertise, communication, and commitment to delivering high-quality, user-friendly applications. 60% of reviewers highlight Vilantis's flexibility and problem-solving skills, making them a reliable partner in application development projects.
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$1,000+Undisclosed10 - 49
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See all 16 projectsBig Field Digital is a mobile application development company specializing in creating engaging and user-friendly iOS and Android apps. With a 100% satisfaction rate among reviewers, clients praise their technical expertise, creativity, and effective communication. While some suggest improvements in unit testing, the overall feedback highlights their responsiveness and impressive project management skills.
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$5,000+$50 - $99 / hr2 - 9London, England
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See all 9 projectsROCKETVAN is a versatile digital solutions company specializing in website development, custom software, and personalized digital experiences. With a 100% positive feedback rate, clients frequently commend their project management, responsiveness, and ability to deliver cost-effective, high-quality outcomes. Notably, ROCKETVAN's communication and commitment to understanding client needs are highlighted by nearly all reviewers.
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$10,000+$25 - $49 / hr10 - 49Sofia, Bulgaria
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See all 3 projectsKvaba Interactive is a versatile technology and development company known for its innovative solutions, including app development, AR/VR experiences, and educational software modules. With 100% positive feedback from reviewers, common themes include their proactive communication, timely delivery, and strong project management. Clients value their creative approach and ability to meet complex project requirements effectively.
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$25,000+$50 - $99 / hr10 - 49Niš, Serbia
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See all 14 projectsBoopro Technology is a specialized company in Mobile App Development, known for its expertise in creating tailored solutions across iOS and Android platforms. Feedback highlights their robust project management and adaptability, with 100% of reviews appreciating their flexibility and responsiveness. Approximately 80% of reviewers emphasize impressive communication, affirming their commitment to client needs and project success.
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$10,000+$50 - $99 / hr50 - 249Kuala Lumpur, Malaysia
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See all 9 projectsSnappymob is a proficient Mobile App Development company specializing in Mobile Software Engineering, offering services for both iOS and Android platforms. Reviews indicate a high level of customer satisfaction, with 100% of feedback highlighting their excellent project management, flexibility, and ability to meet deadlines. Clients praise their ability to turn business needs into actionable technical solutions.
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$10,000+$25 - $49 / hr10 - 49San Jose, CA
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See all 2 projectsGlobiz Technology Inc offers Mobile App Development and website development services. Reviews highlight their professionalism, timely delivery, and approachable nature, with clients praising their cost-effective solutions and proactive communication. Globiz Technology Inc has been recognized for successfully meeting project objectives and ensuring client satisfaction.
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$25,000+$50 - $99 / hr10 - 49
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See all 2 projectsAleh excels in web development and custom application development, showcasing strong capabilities in creating secure and efficient infrastructure solutions. Their reviews highlight a commitment to integrity and client-centered service, with 100% of reviewers appreciating their transparency and project management skills. Clients commend Aleh's ability to foster collaborative relationships and adapt to client needs effectively.
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$10,000+$25 - $49 / hr10 - 49Dublin, Ireland
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See all 3 projectsDevensis specializes in Mobile App Development, providing comprehensive services such as user registration, scheduling, health tracking, and community features within applications. The overall feedback highlights their dedication to high-quality work, efficient project management, and smooth communication, resulting in successful app launches and positive user feedback. Their team culture and value for cost are also consistently praised by clients.
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$5,000+$25 - $49 / hr10 - 49Lahore, Pakistan
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See all 1 projectsMeshLogix Solutions is a software development company specializing in building IIoT platforms with cloud and SQL server infrastructures. Reviews indicate a 100% positive feedback rate, highlighting their responsiveness, delivery within timeframes, and strong alignment with client values. While praised for their loyalty and deep understanding of business logic, there is a minor suggestion for improvement in module estimation.
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$5,000+< $25 / hr50 - 249Kazhakkoottam, India
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See all 25 projectsZOONDIA, a company specializing in mobile app development and web design, consistently receives positive feedback from clients for its technical expertise and project management. Approximately 95% of reviews highlight their ability to deliver high-quality applications, including iOS and Android development, on time. Clients commend their responsive communication and problem-solving skills, with strong emphasis on their ability to handle challenging projects efficiently.
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$5,000+$25 - $49 / hr50 - 249San Francisco, CA
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See all 16 projectsSiddhi Infosoft is a reputable Mobile App Development company specializing in creating custom applications for both iOS and Android platforms. The company is highly praised for its effective communication, quick project initiation, and ability to deliver within budget, with over 95% of reviewers expressing satisfaction with their expertise and customer service. A minor suggestion for improvement is adjusting to different time zones.
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List of the Top 15 Cross Platform Application Development Companies
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$10,000+$25 - $49 / hr250 - 999San Francisco, CA
Ability to deliver
38.7/40.020/20 Reviews10/10 Clients & Experience8.7/10 Market PresenceService focus
40% Mobile App Development50% Hybrid & cross platform apps60% Other -
$5,000+$25 - $49 / hr250 - 999Jaipur, India
Ability to deliver
37.4/40.020/20 Reviews10/10 Clients & Experience7.4/10 Market PresenceService focus
60% Mobile App Development60% Hybrid & cross platform apps40% Other -
$10,000+$25 - $49 / hr50 - 249Warszawa, Poland
Ability to deliver
37.1/40.020/20 Reviews10/10 Clients & Experience7.1/10 Market PresenceService focus
55% Mobile App Development50% Hybrid & cross platform apps45% Other -
$10,000+$50 - $99 / hr250 - 999Greenville, SC
Ability to deliver
36.6/40.020/20 Reviews10/10 Clients & Experience6.6/10 Market PresenceService focus
60% Mobile App Development55% Hybrid & cross platform apps40% Other -
$10,000+$25 - $49 / hr250 - 999Bengaluru, India
Ability to deliver
37.2/40.020/20 Reviews10/10 Clients & Experience7.2/10 Market PresenceService focus
30% Mobile App Development100% Hybrid & cross platform apps70% Other -
$25,000+$25 - $49 / hr50 - 249Agoura Hills, CA
Ability to deliver
36.5/40.020/20 Reviews10/10 Clients & Experience6.5/10 Market PresenceService focus
50% Mobile App Development50% Hybrid & cross platform apps50% Other -
$25,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
36.4/40.020/20 Reviews10/10 Clients & Experience6.4/10 Market PresenceService focus
80% Mobile App Development100% Hybrid & cross platform apps20% Other -
$10,000+$50 - $99 / hr50 - 249Denver, CO
Ability to deliver
38.5/40.020/20 Reviews10/10 Clients & Experience8.6/10 Market PresenceService focus
50% Mobile App Development30% Hybrid & cross platform apps50% Other -
$10,000+$50 - $99 / hr50 - 249Montevideo, Uruguay
Ability to deliver
35.4/40.018.8/20 Reviews10/10 Clients & Experience6.6/10 Market PresenceService focus
75% Mobile App Development80% Hybrid & cross platform apps25% Other -
$5,000+< $25 / hr50 - 249Dallas, TX
Ability to deliver
36.8/40.020/20 Reviews10/10 Clients & Experience6.8/10 Market PresenceService focus
50% Mobile App Development40% Hybrid & cross platform apps50% Other -
$25,000+$50 - $99 / hr50 - 249Rzeszów, Poland
Ability to deliver
34.9/40.019.4/20 Reviews10/10 Clients & Experience5.5/10 Market PresenceService focus
50% Mobile App Development50% Hybrid & cross platform apps50% Other -
$25,000+< $25 / hr250 - 999Gurugram, India
Ability to deliver
35.9/40.020/20 Reviews10/10 Clients & Experience5.9/10 Market PresenceService focus
30% Mobile App Development30% Hybrid & cross platform apps70% Other -
$10,000+$25 - $49 / hr250 - 999Kolkata, India
Ability to deliver
35.2/40.020/20 Reviews9.8/10 Clients & Experience5.4/10 Market PresenceService focus
30% Mobile App Development35% Hybrid & cross platform apps70% Other -
$10,000+$50 - $99 / hr50 - 249Ząbki, Poland
Ability to deliver
34.6/40.020/20 Reviews9.3/10 Clients & Experience5.3/10 Market PresenceService focus
75% Mobile App Development100% Hybrid & cross platform apps25% Other -
$25,000+$100 - $149 / hr50 - 249Los Angeles, CA
Ability to deliver
35.9/40.020/20 Reviews10/10 Clients & Experience5.9/10 Market PresenceService focus
50% Mobile App Development40% Hybrid & cross platform apps50% Other -
$10,000+$25 - $49 / hr50 - 249Indore, India
Ability to deliver
34.5/40.018/20 Reviews10/10 Clients & Experience6.5/10 Market PresenceService focus
50% Mobile App Development50% Hybrid & cross platform apps50% Other -
$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
Ability to deliver
36.3/40.017.6/20 Reviews10/10 Clients & Experience8.8/10 Market PresenceService focus
17% Mobile App Development35% Hybrid & cross platform apps83% Other -
$1,000+$50 - $99 / hr10 - 49Philadelphia, PA
Ability to deliver
38.1/40.020/20 Reviews10/10 Clients & Experience8.1/10 Market PresenceService focus
80% Mobile App Development25% Hybrid & cross platform apps20% Other -
$25,000+$25 - $49 / hr250 - 999Irving, TX
Ability to deliver
35.2/40.020/20 Reviews10/10 Clients & Experience5.2/10 Market PresenceService focus
30% Mobile App Development30% Hybrid & cross platform apps70% Other -
$50,000+$100 - $149 / hr10 - 49London, England
Ability to deliver
33.8/40.017/20 Reviews10/10 Clients & Experience6.8/10 Market PresenceService focus
70% Mobile App Development70% Hybrid & cross platform apps30% Other -
$10,000+$25 - $49 / hr10 - 49Kyiv, Ukraine
Ability to deliver
33.2/40.018.4/20 Reviews9.9/10 Clients & Experience4.9/10 Market PresenceService focus
70% Mobile App Development80% Hybrid & cross platform apps30% Other -
$25,000+$50 - $99 / hr1,000 - 9,999Gliwice, Poland
Ability to deliver
34.4/40.018/20 Reviews10/10 Clients & Experience6.4/10 Market PresenceService focus
20% Mobile App Development30% Hybrid & cross platform apps80% Other -
$10,000+$25 - $49 / hr250 - 999Kuala Lumpur, Malaysia
Ability to deliver
34.2/40.019.2/20 Reviews10/10 Clients & Experience5/10 Market PresenceService focus
30% Mobile App Development30% Hybrid & cross platform apps70% Other -
$1,000+< $25 / hr50 - 249Kolkata, India
Ability to deliver
32.9/40.017.8/20 Reviews10/10 Clients & Experience5.1/10 Market PresenceService focus
50% Mobile App Development50% Hybrid & cross platform apps50% Other -
$25,000+$50 - $99 / hr50 - 249Buenos Aires, Argentina
Ability to deliver
32.8/40.017.4/20 Reviews10/10 Clients & Experience5.4/10 Market PresenceService focus
50% Mobile App Development60% Hybrid & cross platform apps50% Other -
Undisclosed$25 - $49 / hr250 - 999Dubai, United Arab Emirates
Ability to deliver
33.3/40.018.4/20 Reviews10/10 Clients & Experience4.9/10 Market PresenceService focus
40% Mobile App Development30% Hybrid & cross platform apps60% Other -
$10,000+< $25 / hr250 - 999Hanoi, Vietnam
Ability to deliver
35.9/40.018.8/20 Reviews10/10 Clients & Experience7.1/10 Market PresenceService focus
30% Mobile App Development20% Hybrid & cross platform apps70% Other -
$10,000+$25 - $49 / hr10 - 49
Ability to deliver
32.6/40.018.2/20 Reviews9.8/10 Clients & Experience4.6/10 Market PresenceService focus
70% Mobile App Development80% Hybrid & cross platform apps30% Other -
$10,000+$50 - $99 / hr50 - 249Wrocław, Poland
Ability to deliver
35.2/40.020/20 Reviews9.8/10 Clients & Experience5.4/10 Market PresenceService focus
30% Mobile App Development60% Hybrid & cross platform apps70% Other -
$25,000+$50 - $99 / hr10 - 49Cape Town, South Africa
Ability to deliver
33.6/40.017/20 Reviews10/10 Clients & Experience6.6/10 Market PresenceService focus
50% Mobile App Development100% Hybrid & cross platform apps50% Other
Latest Cross Platform Articles
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Cross-Platform App Development Agency FAQs
Leading agencies track key performance indicators such as install rate, user retention, session length, and revenue per user. They integrate analytics tools like Firebase, Mixpanel, or Amplitude to monitor these metrics and run A/B tests, allowing stakeholders to tie feature releases directly to business outcomes.
A cross-platform app development company designs, builds, tests, and maintains mobile applications that run smoothly on multiple operating systems—usually iOS and Android—with a single shared codebase. By leveraging frameworks such as Flutter, React Native, Xamarin, or Kotlin Multiplatform, these firms streamline development timelines, reduce maintenance overhead, and ensure a consistent user experience across devices. They also advise on app store compliance, security, and performance optimization.
Cross-platform app development companies tailor their services to help clients accomplish their unique goals and launch sophisticated apps. By partnering with these service providers, you can expect services such as:
- Technical consulting and product discovery
- UI/UX design tailored for multi-device compatibility
- Shared-codebase development (i.e., Flutter, React Native)
- Native module integration for device-specific features
- API and backend development or integration
- Quality assurance, automated testing, and CI/CD
- Post-launch support, updates, and mobile app development services such as analytics implementation and feature road-mapping
Budgets range widely based on several variables such as project complexity, feature set, and team size. Here’s a run through of average pricing based on cross-platform app development projects reviewed on Clutch:
- MVP or prototype: $25,000 – $60,000
- Mid-range consumer app: $60,000 – $150,000
- Enterprise-grade solution with integrations: $150,000 – $500,000+
Hourly rates for these service providers typically fall between $50 – $149. In addition, offshore teams often charge less, while top-tier U.S. agencies may exceed $200 per hour. Always request a detailed scope, delivery milestones, and maintenance costs up front.
- Match technical expertise to your stack (e.g., Flutter vs. React Native).
- Review case studies for similar industries or app types.
- Validate client testimonials and Clutch ratings.
- Assess communication style and project management tools.
- Compare total cost of ownership—including post-launch support—rather than just initial quotes.
Before committing to a long-term partnership, consider doing a trial run or a short test project. A discovery workshop or paid proof of concept is a low-risk way to evaluate fit before committing to a full build.
- Guarantees of unrealistically low budgets or launch dates
- Vague contracts without source-code ownership clauses
- Limited portfolio in cross platform mobile programming
- Poor responsiveness during the sales cycle
- Overreliance on generic templates instead of custom architecture
If a provider can’t explain their quality-assurance process or refuses to give you repository access, keep looking. Taking your time and being meticulous is better than wasting time, effort, and resources with the wrong partner.
- Which frameworks and programming languages do you specialize in?
- How do you handle OS-specific features within a shared codebase?
- What is your approach to testing on real devices versus emulators?
- Will I own the source code and IP upon project completion?
- How do you structure post-launch maintenance and updates?
- Can you provide references for projects similar in scope and industry?
Cross-platform teams deliver faster time-to-market and up to 30–40% cost savings because a single codebase powers multiple platforms. This unified approach simplifies future updates, ensures design consistency, and reduces the need for duplicate QA cycles. Native teams may still be preferable for GPU-intensive gaming or highly platform-specific experiences, but most business, productivity, and e-commerce apps see greater ROI with a cross-platform strategy.