Top 100 Cross Platform App Developers in the United Kingdom
The Best of July 2025Looking for a top cross platform mobile app development company in the United Kingdom?
Cross-platform mobile applications have benefits that outweigh those of native applications if your users interact with your business on both Android and Apple products. Cross platform app development entails building a mobile app that’s compatible with multiple operating systems. Cross-platform, or hybrid apps, use a single codebase, which means you don’t need separate apps with separate technologies to appeal to customers using Android or iOS. Because of this single codebase, cross platform apps are less costly to create and maintain.
Most hybrid apps will use either Ionic or React as a development framework. React is a JavaScript framework that allow apps to support Android and iOS natively, while Ionic uses JavaScript, HTML5, CSS, and Sass for hybrid apps, desktop apps, and progressive web apps. Choosing an app developer with the right skillset to fit the technology framework your app needs is a good place to start when interviewing app development companies.
To assist you in your search for a partner, we’ve compiled this list of the top cross platform app developers in United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom Cross Platform Mobile App Development Companies
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1$25,000+50 - 249 employeesLondon, EnglandSynergy Labs is a midsize application development firm. They offer Mobile App Development, Custom Software Development, Artificial Intelligence, Generative AI, and more and were established in 2020. The company is headquartered in Hollywood, Florida; Miami, Florida; New York, New York and Dubai, United Arab Emirates.Read More
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2$5,000+250 - 999 employeesLondon, EnglandBased in Jaipur, India; New York, New York; London, England and Dubai, United Arab Emirates, Konstant Infosolutions is an app development firm. The midsize team provides Mobile App Development, UX/UI Design, Web Development, Artificial Intelligence, and more and was launched in 2003.Read More
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United Nations Volkswagen Stanley Connect DelmonteIndustries
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3$10,000+250 - 999 employeesLondon, EnglandApplication development company Webskitters was established in 2010. Their midsize team is based in Kolkata, India; London, England; Miami, Florida and Claymont, Delaware. Their services include Mobile App Development, Web Development, E-Commerce Development, IoT development, and more.Read More
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Mercedes-AMGIndustries
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4$10,000+10 - 49 employeesBristol, EnglandRead More
Morrow formerly known as App Sapiens is a development firm based in Bristol was founded in 2019. With less than 10 members on their team, they offer web and mobile app development as well as IT strategy consulting assistance to small businesses, using languages such as JavaScript and frameworks such as React Native, NodeJS, and ReactJS.
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OwnableIndustries
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5$10,000+250 - 999 employeesLondon, EnglandGeekyAnts is a midsize software development firm. Established in 2006, the agency is based in San Francisco, California; Bengaluru, India and London, England. Their team specializes in Custom Software Development, Mobile App Development, Web Development, Artificial Intelligence, and more.Read More
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Siveco Romania Olive Garden Darden KhataBookIndustries
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6$25,000+10 - 49 employeesLondon, EnglandStakk is a small app development company. They specialize in Mobile App Development and UX/UI Design and were established in 2016. The firm is headquartered in London, England; Wilmington, Delaware; Amsterdam, Netherlands and Orlando, Florida.Read More
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7$5,000+50 - 249 employeesLondon, EnglandIConnect Digital Solutions Ltd is a London, England-based application development firm. They specialize in Mobile App Development, UX/UI Design, and Web Development and were launched in 2011.Read More
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8$50,000+1,000 - 9,999 employeesLondon, EnglandKellton is a large software development company. The Reston, Virginia-based agency was established in 2009. Their services include Custom Software Development, Mobile App Development, Artificial Intelligence, BI & big data consulting & SI, and more.Read More
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9$10,000+1,000 - 9,999 employeesLondon, EnglandAR/VR development company Devsinc was founded in 2009. They are headquartered in San Jose, California; Lahore, Pakistan; Dubai, United Arab Emirates and London, England and have a large team. Devsinc offers AR/VR development, Mobile App Development, Web Development, Custom Software Development, and more.Read More
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Xiaomi Levis Al-Jouf (JADCO) Al Rajhi Bank (Saudia Arabia)Industries
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10$50,000+1,000 - 9,999 employeesLondon, EnglandAndersen Inc. Is a Dallas, Texas-based custom software development company. Launched in 2007, the large team offers Custom Software Development, IT managed services, Mobile App Development, IT strategy consulting, and more.Read More
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SamsungIndustries
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11$10,000+50 - 249 employeesLondon, EnglandIn London, England, Old.St Labs is a midsize app development firm. Established in 2020, the team focuses on Mobile App Development, Custom Software Development, and Web Development.Read More
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Mariana UFP The Military App Allegr Pixel ArtworksIndustries
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12$10,000+10 - 49 employeesLondon, EnglandCOMPU-VISION S.A.R.L. Is a website development firm headquartered in Batroun, Lebanon; Miami Beach, Florida and London, England. The agency specializes in Web Development, Mobile App Development, and Custom Software Development and has a small team.The agency was launched in 2010.Read More
Clients
Luxury Rentals Miami Beach Sleeping Plaza Masdar KSA Jetour QatarIndustries
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13$25,000+50 - 249 employeesSalford, EnglandDigiryte, a cloud consulting & SI company, was established in 2016. The midsize Salford, England-based team provides cloud consulting & SI, Mobile App Development, and Custom Software Development.Read More
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NHSIndustries
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14$10,000+10 - 49 employeesLondon, EnglandRead More
Inventiff is a website development firm. Established in 2019, the small firm is headquartered in London, United Kingdom and Cluj-Napoca, Romania. Their services include web development, mobile app development, web design, ux/ui design, and more.
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15$10,000+10 - 49 employeesManchester, EnglandApplication development company Foresight Mobile is based in Manchester, England; Birmingham, England and London, England. They offer Mobile App Development, Custom Software Development, Web Development, and API Development and were launched in 2016.Read More
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Table.co Swrve Levi Strauss EAIndustries
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16$50,000+10 - 49 employeesYork, EnglandMobile application development company The Distance App Developers was established in 2009. Their small team is located in London, England and York, England. Their services include Mobile App Development, Artificial Intelligence, and Product Design.Read More
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LeShuttle NHS Bentley Motors AstraZenecaIndustries
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17$10,000+10 - 49 employeesLondon, EnglandRead More
TechnoYuga Soft Pvt. Ltd., a mobile application development company, was established in 2019. Their small team is based in New Delhi, India; Surat, India; Toronto, Canada and Orland Park, Illinois. The company focuses on Mobile App Development, Custom Software Development, Web Development, Artificial Intelligence, and more.
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Gfacility Akasha Air mfine DecathlonIndustries
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18$25,000+1,000 - 9,999 employeesLondon, EnglandLaunched in 2002, Vention is a custom software development firm. They are based in New York, New York; Marietta, Georgia; Woodbridge Township, New Jersey and London, England and have a large team. Their services include Custom Software Development, Web Development, IT staff augmentation, Mobile App Development, and more.Read More
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IBM PayPal pwc IC MarketsIndustries
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19$25,000+50 - 249 employeesLondon, EnglandRead More
Launched in 2013, Empat is an app development company. The midsize San Francisco, California-based team focuses on Mobile App Development, Web Development, and Custom Software Development.
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Obimy — A mobile app connecting loved ones across distances with over 10 million downloads on iOS and Android. Enables seamless communication and emotional connection. Mobile app development and social networking focus. Bigsister — Custom AI software designed for sales performance tracking and analysis, providing clean, accurate data to optimize sales teams and improve efficiency with advanced analytics. Trigga — A fintech project featuring payment systems and a comprehensive analytical database to support secure transactions and financial insights for smarter decision-making. DentalCare — Healthcare ecosystem with mobile app, web development, and CRM tools for managing patient records, tracking appointments, and sending automated reminders to improve patient care.Industries
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20$10,000+50 - 249 employeesLondon, EnglandThoughtbot, a web development firm, was established in 2003. They are headquartered in New York, New York and London, England and have a midsize team. Thoughtbot focuses on Web Development, Mobile App Development, UX/UI Design, cloud consulting & SI, and more.Read More
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Health Match 360Industries
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21$10,000+50 - 249 employeesLondon, EnglandNimblechapps Pvt. Ltd. Is a mobile app development company headquartered in Ahmedabad, India; Austin, Texas and London, England. They offer Mobile App Development and Web Development and were established in 2014.Read More
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Strom MotorsIndustries
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22$10,000+10 - 49 employeesLondon, EnglandBased in London, England; Plymouth, England; Edinburgh, Scotland and Manchester, England, Coreblue is a custom software development firm. The small team specializes in Custom Software Development, Mobile App Development, IT strategy consulting, Low/No Code Development, and more and was founded in 2015.Read More
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Bank of Kigali Executive Nexus ProConveyIndustries
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23$10,000+250 - 999 employeesLondon, EnglandIn Sahibzada Ajit Singh Nagar, India; London, England and Great Neck, New York, SoftProdigy is a software development company. The midsize agency was launched in 2006. Their team offers Custom Software Development, Mobile App Development, Artificial Intelligence, cloud consulting & SI, and more.Read More
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DeloitteIndustries
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24$10,000+250 - 999 employeesLondon, EnglandSENLA is a custom software development company. Their midsize team is based in Warszawa, Poland; London, England and Zagreb, Croatia. The company offers Custom Software Development, Web Development, Mobile App Development, Blockchain, and more. The company was founded in 2012.Read More
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Abbott BOSCH KPMG Western UnionIndustries
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25$1,000+1,000 - 9,999 employeesLondon, EnglandDotsquares, a cloud consulting & SI company, was founded in 2002. Located in London, England; Mount Waverley, Australia; Albourne, England and Jaipur, India, their large team specializes in cloud consulting & SI, CRM consulting and SI, ERP consulting and SI, IT managed services, and more.Read More
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EricssonIndustries
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26$10,000+2 - 9 employeesLondon, EnglandRead More
Ingenious App Studios is a mobile app development firm based in London. Founded in 2018, their team of 8 serves clients in the internet and IT sectors. Services include web development.
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MFP AppIndustries
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27$10,000+2 - 9 employeesLondon, EnglandApp development company Binary Mango was launched in 2016. Headquartered in London, England, their small team provides Mobile App Development, Custom Software Development, Artificial Intelligence, and Blockchain.Read More
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GetLeslieIndustries
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28$25,000+2 - 9 employeesPlymouth, EnglandRead More
Elixel is an UX design company. Their small team is in Plymouth, United Kingdom. Their services include ux/ui design, mobile app development, web design, and web development. The company was established in 2012.
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29$10,000+10 - 49 employeesEdinburgh, ScotlandRead More
GearedApp is a software development firm based in Edinburgh, Scotland. They were founded in 2013 and have a team of 11 employees who specialize in mobile development, web development, and UX/UI design. They work mostly with small business clients in the healthcare, business services, and education industries.
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NHSIndustries
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30$10,000+50 - 249 employeesLondon, EnglandRead More
Kernelics is a software development company founded in 2020 with over 50 employees. They provide web development, mobile app development, and AI solutions from their office in Minsk, Belarus. They work with small businesses across various industries.
Industries
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