Top Cross Platform App Developers
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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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$10,000+$200 - $300 / hr2 - 9دبي, United Arab Emirates
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See all 9 projectsSelect Creatives is a dynamic digital and technical consultancy specializing in web development, UI/UX design, and strategic digital solutions. With an impressive 100% positive feedback, clients commend their responsiveness, innovative approach, and commitment to deadlines, often highlighting their strong project management and ability to tailor solutions to specific needs. Approximately 60% of reviewers mention their passion and dedication as standout qualities.
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$10,000+$50 - $99 / hr10 - 49Petaling Jaya, Malaysia
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See all 7 projectsVirtualspirit is a Mobile App Development company specializing in creating customized applications for iOS and Android platforms. Their reviews highlight a high level of client satisfaction, with approximately 100% positive feedback on their responsiveness and value-driven services. Clients appreciate their talented team and effective communication practices, although suggestions for improved project management and planning were noted.
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$10,000+< $25 / hr50 - 249Ahmedabad, India
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See all 18 projectsNinjaTech, a versatile mobile app development company, consistently delivers exceptional results across various projects, including native app production and SaaS platform development. With an impressive 100% positive feedback, clients commend their effective communication, adaptability, and efficient project management, highlighting their ability to meet tight deadlines while providing high-quality solutions in mobile application development and other related services.
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$1,000+$50 - $99 / hr2 - 9Cape Town, South Africa
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See all 12 projectsVegatech is a web development company known for delivering high-quality, user-friendly websites across various industries, including healthcare, photography, and tech. Their commitment to client satisfaction is evident, with 100% of reviews praising their professionalism, efficiency, and communication. Clients highlight their attention to detail and ability to exceed expectations, with many noting improved online presence and business growth post-collaboration.
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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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$1,000+$100 - $149 / hr2 - 9Painesville, OH
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See all 2 projectsSoftware Prophets is a mobile app development company known for transforming ideas into successful applications, as evidenced by a 100% positive review rate. Clients commend their dedication, technical expertise, and exceptional project management, with one reviewer highlighting their rapid response and commitment to quality in mobile app development projects.
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$5,000+< $25 / hr50 - 249
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See all 2 projectsSymmetry Group Limited is a renowned digital solutions agency specializing in website development and UI/UX design. The company has received consistently positive feedback, with reviewers highlighting their strategic mindset, timely delivery, and user-centric design approach. Approximately 90% of the feedback emphasizes their responsive communication and effective project management, while some suggest improvements in minor revision turnaround and post-launch support timelines.
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$10,000+< $25 / hr10 - 49Kochi, India
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See all 3 projectsWebdura Technologies is a Mobile App Development company specializing in iOS and Android applications. With 100% positive feedback, clients commend their expertise, proactive project management, and commitment to exceeding expectations. They are particularly noted for their use of React Native and their ability to enhance project ideas with innovative suggestions.
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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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$5,000+$50 - $99 / hr10 - 49Karachi, Pakistan
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See all 5 projectsDigitaez is a Mobile App Development company known for creating user-friendly and efficient apps, specializing in platforms like iOS and Android through tools such as Flutter. With consistently high ratings, 100% of reviewers laud their exceptional project management and communication skills, while 20% suggest minor improvements in web development capabilities. They have delivered impressive results, as evidenced by a successful e-commerce and gaming app launch.
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$1,000+< $25 / hr250 - 999Gurugram, India
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See all 20 projectsOodles Technologies is a Mobile App Development company specializing in app and web portal development across platforms such as iOS, Android, and tvOS. Reviews indicate a mixed yet generally positive sentiment, with approximately 80% of clients appreciating their commitment, timely delivery, and technical capabilities, while about 20% mentioned challenges with developer quality and adherence to client design requirements.
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$50,000+$25 - $49 / hr10 - 49Kyiv, Ukraine
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See all 1 projectsPost Physical is a Mobile App Development company that specializes in Android and iOS game development using Unity. Their clients highlight the firm's efficient project management and rapid development capabilities, with approximately 80% of feedback being positive. Although some note cultural differences, their partnership approach and effective communication ensure successful project outcomes.
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$1,000+$25 - $49 / hr10 - 49Burlington, Canada
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See all 3 projectsRopstam Game Studio is a game development company known for redesigning and redeveloping games, as evidenced by a project involving the complete overhaul of a Flash game. The reviews reflect a 100% positive sentiment regarding their communication and project management skills, although there is room for improvement in proactively suggesting game enhancements.
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$10,000+< $25 / hr250 - 999Sahibzada Ajit Singh Nagar, India
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See all 30 projectssmartData Enterprises is a proficient application development company specializing in Mobile App Development for iOS and Android platforms. They consistently receive positive feedback, with clients praising their structured approach, flexibility, and dedication, even outside regular hours. Approximately 100% of the reviews highlight their effective project management and problem-solving capabilities, making them a reliable partner for diverse app development needs.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
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See all 5 projectsSprigStack is a digital solutions company specializing in website development, content creation, and eCommerce solutions. The company receives overwhelmingly positive feedback, with 100% of reviewers highlighting their proactive approach, excellent communication, and impressive project management skills. Clients appreciate their creativity and technical expertise, resulting in projects often being completed ahead of time and under budget.
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$25,000+$50 - $99 / hr10 - 49
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See all 3 projectsXseed Solutions is a Mobile App Development company specializing in Android and iOS Development. Across reviews, 100% of clients praised their technical expertise and project management skills. Clients highlighted their ability to consistently deliver high-quality work and exceed expectations, with 33% noting flexibility and attentiveness. While there are minor concerns about costs, Xseed Solutions' overall performance is highly regarded.
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Undisclosed< $25 / hr50 - 249Gurugram, India
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See all 1 projectsGeeks & Nomads is a Mobile App Development company known for delivering comprehensive solutions in Android and iOS Development. They have received overwhelmingly positive feedback, with 100% of reviewers praising their innovative approach, professionalism, and timely delivery. Clients specifically commend their ability to understand and address specific project needs effectively.
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$5,000+$25 - $49 / hr10 - 49Dublin, Ireland
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See all 5 projectsSommo is a proficient no-code/low-code development agency known for its swift and efficient MVP creation using platforms like Bubble and Webflow. The feedback highlights their exceptional project management, with 100% of reviewers praising the team's communication, responsiveness, and ability to deliver projects on time. Clients consistently commend their innovative approach, deep understanding of project needs, and the capacity to produce high-quality, reliable outputs swiftly.
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UndisclosedUndisclosed10 - 49Wrocław, Poland
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See all 4 projectsInnovation Software is a versatile software development company offering advanced web application solutions and e-commerce platform enhancements. The company has received overwhelmingly positive feedback, with 100% of reviewers highlighting their professionalism, timely delivery, and effective communication. Clients appreciate their ability to seamlessly integrate into existing systems and their use of modern technologies to achieve significant business improvements.
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$25,000+$50 - $99 / hr2 - 9Melbourne, Australia
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See all 5 projectsAttalla Digital is a leading company specializing in Mobile App Development, known for transforming concepts into robust applications across diverse sectors such as social media, photography, retail, and delivery services. With 100% positive feedback, clients commend their innovative approach, seamless project management, and commitment to exceeding expectations. Notably, 75% of reviews highlight their dedication to understanding and achieving client goals.
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$10,000+$50 - $99 / hr50 - 249
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See all 8 projectsSunrise Apps is a Mobile App Development company renowned for its expertise in crafting iOS and Android applications. The reviews consistently highlight their superb project management, aligning company values, and commendable communication, with 100% positive feedback regarding their adaptability and commitment to deadlines. Clients frequently praise their excellent value for cost, with clear, transparent processes and a thorough understanding of client needs.
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Undisclosed$50 - $99 / hr1,000 - 9,999Wrocław, Poland
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See all 4 projectsintive is a Mobile Application Development company specializing in both Android and iOS development. Reviews highlight their adeptness at scaling teams and responsiveness to client concerns. They have a 100% client retention rate and are praised for meeting project goals and maintaining robust communication, although some note the need for improved planning and clearer requirements.
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$1,000+< $25 / hr50 - 249Sahibzada Ajit Singh Nagar, India
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See all 3 projectsQServices IT Solutions Inc. offers Mobile App Development services, including UI/UX design and app usability testing. Reviews highlight their timely delivery, excellent service, and responsiveness. Their work, particularly in mobile application development, has been praised for meeting all requirements and aligning well with client values and budget constraints.
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$5,000+$50 - $99 / hr10 - 49Münchenstein, Switzerland
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See all 9 projectsY-Tech is a software development company specializing in mobile app development, consistently praised for its technical expertise and proactive partnership. They achieved a 4.7 average user rating, and 75% retention rate, with 90% of feedback highlighting their effective project management and responsiveness, although some noted initial oversights due to a swift delivery pace.
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$5,000+< $25 / hr50 - 249Sahibzada Ajit Singh Nagar, India
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See all 3 projectsiapp Technologies LLP is a software development company specializing in building complex platforms that integrate CMS and TCS functionalities. Based on reviews, clients consistently highlight their effective project management and adaptable development process, with 100% of reviewers expressing satisfaction with the prototypes and final products delivered.
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$50,000+$50 - $99 / hr250 - 999Milpitas, CA
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See all 13 projectsWest Agile Labs is a Mobile App Development company specializing in iOS Development. The reviews highlight their strong project management skills and efficient communication, with 100% positive feedback emphasizing their ability to understand client needs and deliver high-quality applications. Their comprehensive team approach and adaptability in meeting project timelines are particularly praised.
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$10,000+$25 - $49 / hr50 - 249
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See all 7 projectsITERON AG is a custom software development company specializing in a range of services, including web-based solutions, ERP finance implementation, and app development for diverse industries. The feedback is mixed, with approximately 67% of reviews highlighting positive experiences, emphasizing their flexibility, communication, and technical skills, while 33% of reviews indicate issues with professionalism and communication. Their expertise in Ruby on Rails and accommodating approach are frequently praised.
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$5,000+$25 - $49 / hr10 - 49Chicago, IL
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See all 11 projectsHristov Development is a custom software development agency specializing in AI integration, IT consulting, and agile prototyping. Their reviews demonstrate a 100% positive reception, with clients highlighting their technical expertise, proactive communication, and customer-centric approach. Notably, 80% of reviewers emphasized their innovative solutions and reliable project management. The company is praised for exceeding expectations and delivering timely, scalable, and user-friendly solutions.
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$10,000+$25 - $49 / hr50 - 249Ludhiana, India
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See all 6 projectsLogiciel Solutions is a prominent Mobile App Development company known for its expertise in creating versatile platforms across web, mobile web, iOS, and Android. Their reviews emphasize a high level of professionalism, with 100% positive feedback highlighting their innovative approach and exceptional project management. Clients frequently commend their technical proficiency and dedication to delivering user-centric applications.
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$25,000+$25 - $49 / hr50 - 249The Woodlands, TX
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See all 41 projectsIngenia Agency is a mobile app development firm specializing in iOS and Android applications, providing tailored solutions for unique needs such as educational apps and fintech systems. Both reviewers expressed satisfaction with Ingenia's commitment to meeting project deadlines and exceeding initial expectations, with no negative feedback reported, indicating a high level of client satisfaction.
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$5,000+< $25 / hr10 - 49Sahibzada Ajit Singh Nagar, Punjab, India
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See all 3 projectsDevherds is a proficient mobile app development company excelling in creating intuitive, cutting-edge applications for various industries, including timber management and subscription-based services. The company receives overwhelmingly positive feedback, with reviewers highlighting their agile project management, technical expertise, and timely delivery. Approximately 100% of reviews commend their responsive communication and innovative solutions, reflecting their client-centric approach and commitment to exceeding expectations.
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$1,000+$25 - $49 / hr50 - 249Noida, India
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See all 61 projectsEZ Rankings is a digital marketing agency specializing in SEO, web development, and PPC management. The majority of the feedback is positive, with over 87% of clients praising their responsive communication, technical expertise, and value for money. Many clients, approximately 75%, highlight their impressive project management and ability to deliver measurable results, such as increased website traffic and improved search engine rankings. However, a minority, about 13%, report dissatisfaction with specific projects, particularly in PPC management.
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List of the Top 15 Cross Platform Application Development Companies
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$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
50% Mobile App Development50% Hybrid & cross platform apps50% Other -
$5,000+$25 - $49 / hr250 - 999Jaipur, India
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
60% Mobile App Development60% Hybrid & cross platform apps40% Other -
$10,000+$50 - $99 / hr250 - 999Greenville, SC
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
60% Mobile App Development55% Hybrid & cross platform apps40% Other -
$25,000+$25 - $49 / hr50 - 249Warszawa, Poland
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
60% Mobile App Development50% Hybrid & cross platform apps40% Other -
$25,000+$50 - $99 / hr50 - 249Rzeszów, Poland
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
50% Mobile App Development50% Hybrid & cross platform apps50% Other -
$25,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
80% Mobile App Development100% Hybrid & cross platform apps20% Other -
$25,000+$50 - $99 / hr50 - 249Hollywood, FL
Ability to deliver
39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
60% Mobile App Development50% Hybrid & cross platform apps40% Other -
$10,000+$50 - $99 / hr50 - 249Montevideo, Uruguay
Ability to deliver
39.3/40.020/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
75% Mobile App Development80% Hybrid & cross platform apps25% Other -
$10,000+$25 - $49 / hr50 - 249Indore, India
Ability to deliver
39.1/40.019.6/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
60% Mobile App Development50% Hybrid & cross platform apps40% Other -
$25,000+$50 - $99 / hr50 - 249Buenos Aires, Argentina
Ability to deliver
38.9/40.019.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
50% Mobile App Development60% Hybrid & cross platform apps50% Other -
$25,000+$25 - $49 / hr250 - 999Irving, TX
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
30% Mobile App Development30% Hybrid & cross platform apps70% Other -
$25,000+< $25 / hr250 - 999Gurugram, India
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
30% Mobile App Development30% Hybrid & cross platform apps70% Other -
$5,000+< $25 / hr50 - 249Jaipur, India
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
50% Mobile App Development40% Hybrid & cross platform apps50% Other -
$5,000+$25 - $49 / hr250 - 999Surry Hills, Australia
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
50% Mobile App Development25% Hybrid & cross platform apps50% Other -
$10,000+$25 - $49 / hr250 - 999Kolkata, India
Ability to deliver
39/40.020/20 Reviews9.8/10 Clients & Experience9.2/10 Market PresenceService focus
30% Mobile App Development35% Hybrid & cross platform apps70% Other -
$10,000+$25 - $49 / hr250 - 999San Francisco, CA
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
25% Mobile App Development80% Hybrid & cross platform apps75% Other -
$10,000+$50 - $99 / hr50 - 249Ząbki, Poland
Ability to deliver
37.9/40.020/20 Reviews9.3/10 Clients & Experience8.7/10 Market PresenceService focus
75% Mobile App Development100% Hybrid & cross platform apps25% Other -
$1,000+< $25 / hr50 - 249Kolkata, India
Ability to deliver
37.9/40.018.6/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
50% Mobile App Development50% Hybrid & cross platform apps50% Other -
Undisclosed$25 - $49 / hr250 - 999Dubai, United Arab Emirates
Ability to deliver
38.1/40.018.4/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
40% Mobile App Development30% Hybrid & cross platform apps60% Other -
$25,000+$50 - $99 / hr1,000 - 9,999Gliwice, Poland
Ability to deliver
38.7/40.019/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Mobile App Development30% Hybrid & cross platform apps80% Other -
$10,000+$25 - $49 / hr250 - 999San Francisco, CA
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
50% Mobile App Development20% Hybrid & cross platform apps50% Other -
$25,000+$50 - $99 / hr10 - 49London, England
Ability to deliver
37.2/40.018/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
70% Mobile App Development70% Hybrid & cross platform apps30% Other -
$10,000+$50 - $99 / hr50 - 249Denver, CO
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
60% Mobile App Development30% Hybrid & cross platform apps40% Other -
$5,000+< $25 / hr50 - 249Indore, India
Ability to deliver
38.4/40.020/20 Reviews8.8/10 Clients & Experience9.6/10 Market PresenceService focus
55% Mobile App Development40% Hybrid & cross platform apps45% Other -
$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
Ability to deliver
38/40.018.2/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
21% Mobile App Development35% Hybrid & cross platform apps79% Other -
$25,000+$25 - $49 / hr50 - 249Miami, FL
Ability to deliver
36.9/40.017.6/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
60% Mobile App Development50% Hybrid & cross platform apps40% Other -
$5,000+$25 - $49 / hr1,000 - 9,999Noida, India
Ability to deliver
36.9/40.019.8/20 Reviews10/10 Clients & Experience7.1/10 Market PresenceService focus
30% Mobile App Development25% Hybrid & cross platform apps70% Other -
$10,000+$50 - $99 / hr50 - 249Montevideo, Uruguay
Ability to deliver
39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
30% Mobile App Development60% Hybrid & cross platform apps70% Other -
$5,000+$25 - $49 / hr50 - 249Jaipur, India
Ability to deliver
38.8/40.019.2/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
50% Mobile App Development35% Hybrid & cross platform apps50% Other -
$50,000+$150 - $199 / hr10 - 49Chicago, IL
Ability to deliver
36.7/40.017.4/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
60% Mobile App Development60% Hybrid & cross platform apps40% Other
Latest Cross Platform Articles
See all articles
5 States of an iOS App Lifecycle
An iOS app life cycle consists of the events that occur between the launch and termination of a mobile app.
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.