Top 100 Cross Platform App Developers in the United Kingdom
The Best of October 2026Looking 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 an app development firm. Their midsize team is in Hollywood, Florida; Miami, Florida; New York, New York and Dubai, United Arab Emirates and provides Mobile App Development, Custom Software Development, Artificial Intelligence, Generative AI, and more. The firm was launched in 2020.Read More
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2$5,000+250 - 999 employeesLondon, EnglandKonstant Infosolutions is a Jaipur, India-based mobile application development firm. The midsize company was established in 2003. Their team focuses on Mobile App Development, Artificial Intelligence, and Web Development.Read More
Clients
United Nations - Global communication & socio-economic cooperation platform. Volkswagen - Corporate workforce & employee management app. Delmonte - Enterprise food distribution optimization platform. Thomasville - Government utility department managing public infrastructure.Industries
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3$10,000+250 - 999 employeesLondon, EnglandEmpat is a midsize app development company established in 2013. Their team offers Mobile App Development, Custom Software Development, Artificial Intelligence, and Web Development. The firm is in San Francisco, California; Kyiv, Ukraine; London, England and Miami, Florida.Read More
Clients
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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4$10,000+250 - 999 employeesLondon, EnglandWebskitters is a mobile app development company. Their midsize team is based in Kolkata, India; London, England; Miami, Florida and Claymont, Delaware and focuses on Mobile App Development, Web Development, E-Commerce Development, IoT development, and more. The agency was founded in 2010.Read More
Clients
Mercedes-AMGIndustries
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5$10,000+250 - 999 employeesLondon, EnglandGeekyAnts is an application development firm established in 2006. The firm provides Mobile App Development, Custom Software Development, Artificial Intelligence, Web Development, and more and has a midsize team.Read More
Clients
Siveco Romania Olive Garden Darden KhataBookIndustries
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6$50,000+1,000 - 9,999 employeesLondon, EnglandVention is an artificial intelligence firm. Founded in 2002, the company is based in New York, New York; London, England; Marietta, Georgia and San Francisco, California. The large team focuses on Artificial Intelligence, Custom Software Development, Enterprise App Modernization, cloud consulting & SI, and more.Read More
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IBM PayPal pwc IC MarketsIndustries
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7$25,000+250 - 999 employeesLondon, EnglandTekRevol is an application development firm launched in 2018. The firm offers Mobile App Development, IT staff augmentation, Custom Software Development, Web Development, and more and has a midsize team. The firm is based in Houston, Texas; Red Deer, Canada; Newark, California and New York, New York.Read More
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8$25,000+1,000 - 9,999 employeesLondon, EnglandKellton, a software development firm, was founded in 2009. The large Plano, Texas-based team offers Custom Software Development, Mobile App Development, Artificial Intelligence, BI & big data consulting & SI, and more.Read More
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9$50,000+10 - 49 employeesLondon, EnglandStakk is a mobile application development firm. They are headquartered in London, England; Wilmington, Delaware; Amsterdam, Netherlands and Orlando, Florida and have a small team. Their services include Mobile App Development and Artificial Intelligence.Read More
Clients
LNER The British Museum Nivoda SafestyleIndustries
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10$25,000+10 - 49 employeesYork, EnglandThe Distance App Developers is a small mobile application development firm launched in 2009. Their services include Mobile App Development, Artificial Intelligence, and Product Design. The company is in London, England and York, England.Read More
Clients
LeShuttle NHS Bentley Motors AstraZenecaIndustries
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11$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.
Clients
OwnableIndustries
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12$1,000+1,000 - 9,999 employeesLondon, EnglandAI Consulting company Dotsquares is based in London, England; Mount Waverley, Australia; Albourne, England and Jaipur, India. The large team provides AI Consulting, Web Development, Mobile App Development, E-Commerce Development, and more. The firm was established in 2002.Read More
Clients
EricssonIndustries
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13$10,000+10 - 49 employeesLondon, EnglandFounded in 2016, Solar Digital is a website development company. The company specializes in Web Development, AI Agents, Custom Software Development, UX/UI Design, and more and has a small team. The company is headquartered in London, England and Odesa, Ukraine.Read More
Clients
Stark Shipping (analytical portal of marine industryIndustries
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14$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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15$25,000+250 - 999 employeesLondon, EnglandLaunched in 2013, Suffescom Solutions Inc is an application development firm. The company provides Mobile App Development, Web Development, Artificial Intelligence, and Blockchain and has a midsize team.Read More
Clients
Morgan Elliott Justin BoatengIndustries
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16$10,000+1,000 - 9,999 employeesCoventry, EnglandSDLC Corp is an AI company. They provide Artificial Intelligence, Web Development, ERP consulting and SI, Custom Software Development, and more and were launched in 2015. Their large team is headquartered in Batavia, Illinois; Dubai, United Arab Emirates; Noida, India and Coventry, England.Read More
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17$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 offers Custom Software Development, Mobile App Development, IT strategy consulting, Low/No Code Development, and more. The agency was established in 2015.Read More
Clients
Bank of Kigali Executive Nexus ProConveyIndustries
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18$25,000+250 - 999 employeesLondon, EnglandRobosoft Technologies Inc. Is a San Francisco, California-based app development company. They offer Mobile App Development, UX/UI Design, Web Development, Custom Software Development, and more and were launched in 1996.Read More
Clients
Warner Bros. Discovery HSBC McDonalds Mercury FinanceIndustries
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19$50,000+50 - 249 employeesBournemouth, EnglandLaunched in 2009, 3 SIDED CUBE is an application development company. They are in Washington, District of Columbia; Bournemouth, England; London, England and Winter Garden, Florida and have a midsize team. Their services include Mobile App Development, Custom Software Development, UX/UI Design, and Artificial Intelligence.Read More
Clients
American Red Cross British Red Cross Vodafone GlastonburyIndustries
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20$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
Clients
Strom MotorsIndustries
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21$50,000+250 - 999 employeesLondon, EnglandVentureDive is a midsize software development firm. The Mountain View, California-based agency was established in 2012. Their services include Custom Software Development, Mobile App Development, CRM consulting and SI, Application Testing, and more.Read More
Clients
CareemIndustries
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22$10,000+10 - 49 employeesManchester, EnglandEstablished in 2017, Foresight Mobile is a small app development company. Their team provides Mobile App Development, Custom Software Development, Web Development, and API Development. The firm is based in Manchester, England; Birmingham, England and London, England.Read More
Clients
Table.co Swrve Levi Strauss EAIndustries
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23$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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24$50,000+250 - 999 employeesLondon, EnglandInfinum, a custom software development company, was established in 2005. They are in New York, New York; San Francisco, California; Zagreb, Croatia and Ljubljana, Slovenia and have a midsize team. Their services include Custom Software Development, Web Development, Mobile App Development, UX/UI Design, and more.Read More
Clients
PhilipsIndustries
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25$25,000+50 - 249 employeesManchester, EnglandTechgropse is a mobile application development company. Located in Dubai, United Arab Emirates; Riyadh, Saudi Arabia; Doha, Qatar and Sharjah, United Arab Emirates, their midsize team offers Mobile App Development, Artificial Intelligence, E-Commerce Development, and Custom Software Development. The firm was established in 2015.Read More
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26$10,000+50 - 249 employeesLondon, EnglandThoughtbot, a web development firm, is located in New York, New York and London, England. They focus on Web Development, Mobile App Development, UX/UI Design, cloud consulting & SI, and more and were launched in 2003.Read More
Clients
Health Match 360Industries
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27$10,000+50 - 249 employeesLondon, EnglandRead More
Launched in 2018, Rootquotient is a midsize software development company. Their team offers Custom Software Development, Artificial Intelligence, and Mobile App Development. The firm is based in Toronto, Canada; Chennai, India; Richmond, Canada and London, England.
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Siemens GamesaIndustries
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28$50,000+50 - 249 employeesEdinburgh, ScotlandClockwise Software, a software development firm, was founded in 2014. Located in Edinburgh, Scotland, their midsize team specializes in Custom Software Development, Artificial Intelligence, Mobile App Development, Web Development, and more.Read More
Clients
Johnson & JohnsonIndustries
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29$5,000+10 - 49 employeesLondon, EnglandRead More
Based in London, United Kingdom, Goodspeed is a website development firm. The small firm was founded in 2022. Their services include web development, custom software development, and mobile app development.
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30$5,000+50 - 249 employeesHarrow, EnglandIQlance Solutions LLC is a midsize custom software development company. The Toronto, Canada-based company was established in 2016. Their services include Custom Software Development, Mobile App Development, IT staff augmentation, Artificial Intelligence, and more.Read More
Industries
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