Top 100 Cross Platform App Developers in London
The Best of November 2026Looking for a top cross platform mobile app development company in London?
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 London. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best London Cross Platform Mobile App Development Companies
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31$25,000+50 - 249 employeesLondon, EnglandUnicrew, a custom software development firm, was established in 2012. The firm focuses on Custom Software Development, Web Development, Enterprise App Modernization, Artificial Intelligence, and more and has a midsize team.Read More
Clients
Jack Cooper Transport Bigfood Group Booked It Open Room Inc.Industries
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32$1,000+1,000 - 9,999 employeesLondon, EnglandSunTec India, a Data Annotation Services company, is located in Delhi, India; Laguna Beach, California and London, England. Launched in 1999, the large team focuses on Data Annotation Services, Ecommerce Marketing, Back Office Outsourcing, Environmental Consulting, and more.Read More
Clients
NielsenIndustries
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33$1,000+50 - 249 employeesHertfordshire, EnglandRead More
IIH Global is a midsize custom software development company. The Hertfordshire, England-based firm was established in 2013. Their team provides Custom Software Development, Mobile App Development, Web Design, Web Development, and more.
Clients
FLOORS TO WALLS MESHHH Ultimate Player HQ PharmsmartIndustries
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34$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
Clients
GetLeslieIndustries
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35$100,000+250 - 999 employeesLondon, EnglandApadmi is a mobile application development company. They focus on Mobile App Development, Mobile & App Marketing, Web Development, and AR/VR development and were founded in 2009. The company is based in Salford, England; Amsterdam, Netherlands; Edinburgh, Scotland and London, England.Read More
Clients
BBCIndustries
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36$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.
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37$10,000+10 - 49 employeesLondon, EnglandKeyToTech is an application development company located in London, England; L'viv, Ukraine and London, England. The small company was launched in 2017. Their team provides Mobile App Development, Artificial Intelligence, Custom Software Development, Generative AI, and more.Read More
Clients
Meest Post UAMentalHelp Cranberry Apps FlitsboekIndustries
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38$25,000+10 - 49 employeesLondon, EnglandRead More
Theodo UK, founded in 2015, is a consultancy and digital development agency headquartered in London with an additional location in Paris. With a team of over 30 employees, they mainly provide mobile app development, web development, and custom software development services.
Clients
AdmiralIndustries
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39$50,000+10 - 49 employeesLondon, EnglandCustom software development firm Clock Limited was established in 1997. The agency offers Custom Software Development, Mobile App Development, UX/UI Design, and Web Development and has a small team. The agency is headquartered in Sarratt, England and London, England.Read More
Clients
Riot Games Mythical Society Hearst International Tennis FederationIndustries
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40$10,000+250 - 999 employeesLondon, EnglandSENLA is a midsize software development company. Located in Warszawa, Poland; London, England and Zagreb, Croatia, the agency was established in 2012. Their team focuses on Custom Software Development, Web Development, Mobile App Development, Blockchain, and more.Read More
Clients
Abbott BOSCH KPMG Western UnionIndustries
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41$25,000+1,000 - 9,999 employeesLondon, EnglandRead More
TatvaSoft is a custom software development company headquartered in Ahmedabad, India; Murphy, Texas; Melbourne, Australia and London, England. Established in 2001, the large team focuses on Custom Software Development, Web Development, Mobile App Development, cloud consulting & SI, and more.
Clients
Anglo AmericanIndustries
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42$50,000+10 - 49 employeesLondon, EnglandBoldheart, a mobile application development firm, was founded in 2020. The agency specializes in Mobile App Development, Custom Software Development, UX/UI Design, IT strategy consulting, and more and has a small team. The agency is in Berlin, Germany; München, Germany; Zürich, Switzerland and Wien, Austria.Read More
Clients
ValoraIndustries
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43$25,000+50 - 249 employeesLondon, EnglandRead More
DotCode is a design and development company based in Lviv, Ukraine, and founded in 2018. Their team of more than 10 provides web development, web design, and e-commerce development solutions for clients in the fields of hospitality, advertising, and financial services.
Clients
Ply LCM Digital Fly Jets ThriveIndustries
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44$5,000+50 - 249 employeesLondon, EnglandRead More
Protocloud Technologies PVT. LTD. is an information technology and services provider that was founded in 2011. Their headquarters are in Jaipur, India, where they employ between 10 and 15 staff. They work with a range of midmarket and small businesses, offering a full suite of digital solutions, including e-commerce development, custom software development, websites, mobile apps and cloud integration.
Clients
WayfairIndustries
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45$10,000+10 - 49 employeesLondon, EnglandTapptitude is a mobile app development company. Located in Cluj-Napoca, Romania; London, England and New York, New York, their small team focuses on Mobile App Development, Web Development, UX/UI Design, Artificial Intelligence, and more. The agency was founded in 2013.Read More
Clients
TenorIndustries
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46$10,000+50 - 249 employeesLondon, EnglandLimeup is a London, England-based custom software development firm. Launched in 2019, the midsize team offers Custom Software Development, Mobile App Development, and Web Design.Read More
Clients
Connect44Industries
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47$25,000+10 - 49 employeesLondon, EnglandIn London, England, Contic is an application development firm. They provide Mobile App Development, Web Development, Artificial Intelligence, UX/UI Design, and more and were founded in 2021.Read More
Clients
Vault Platform (now part of Diligent) Ymobile Electragram Pristine ConditionIndustries
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48$25,000+10 - 49 employeesWatford, EnglandRead More
AppDrawn is a software solutions company founded in 1999. Their headquarters are in London and they have a second office in Barcelona. Across these 2 locations, they have a team of a dozen staff that do custom software development, web development, and mobile app development for small and medium-size businesses.
Clients
AspireIndustries
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49$10,000+50 - 249 employeesLondon, EnglandRead More
WeUno is a digital agency founded in 2016 in Karachi, Pakistan. Their team of no more than 50 specializes in web development, mobile app development, and social media marketing services for clients in the fields of advertising, IT services, and e-commerce.
Clients
Strapp x University of MichiganIndustries
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50$25,000+10 - 49 employeesLondon, EnglandRead More
Red C London is a mobile app development agency, founded in 1997. Based in London, their team of 11 specializes in mobile app development, web design, and UX/UI design. They work primarily with enterprises and midmarket businesses, focusing on financial services, government, and nonprofits.
Clients
SonyIndustries
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51$25,000+50 - 249 employeesLondon, EnglandRead More
Tech Alchemy is a software development studio based in London. Founded in 2016, they have around 150 employees who provide startups and small to medium-sized businesses with custom software development, blockchain development, and web & mobile app design and development. Services include prototyping, discovery, MVP development, and Web3 digital transformation
Clients
Ocean BottleIndustries
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52$5,000+10 - 49 employeesLondon, EnglandTHEY.dev is a custom software development firm. They provide Custom Software Development, UX/UI Design, Mobile App Development, Application Testing, and more and were established in 2017. Their small team is London, England-based.Read More
Clients
LaunchworksIndustries
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53$10,000+50 - 249 employeesLondon, EnglandSnotor is a Rīga, Latvia-based custom software development firm. They offer Custom Software Development, Artificial Intelligence, IT staff augmentation, Mobile App Development, and more and were founded in 2007.Read More
Clients
Wilpower HUDD Isobiotics WellicsIndustries
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54$250,000+50 - 249 employeesLondon, EnglandSoftware development company Waracle was founded in 2004. They are based in London, England; Dundee, Scotland; Edinburgh, Scotland and Glasgow, Scotland and have a midsize team. Their services include Custom Software Development, Mobile App Development, Artificial Intelligence, Web Development, and more.Read More
Clients
Virgin MoneyIndustries
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55$5,000+10 - 49 employeesLondon, EnglandRead More
200OK Solutions is a mobile app development firm based in Ahmedabad, India. Founded in 2009, their team of 30 serves clients in the hospitality, transportation, and dental sectors. Services include custom software development and web design.
Clients
My ManuIndustries
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56$75,000+50 - 249 employeesReigate, EnglandSonin is an application development firm. They are located in Reigate, England; Edinburgh, Scotland and Paris, France and have a midsize team. The company focuses on Mobile App Development, Custom Software Development, Artificial Intelligence, UX/UI Design, and more.Read More
Clients
Alpine Belle Hutt The British Museum CaterpillarIndustries
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57$25,000+50 - 249 employeesLondon, EnglandSoftware development company The Lightning Group was established in 2015. Their midsize team is in London, England. The Lightning Group focuses on Custom Software Development, Web Development, UX/UI Design, Mobile App Development, and more.Read More
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58$50,000+50 - 249 employeesLondon, EnglandLaunched in 2007, Intellectsoft is a software development firm. The company specializes in Custom Software Development, Artificial Intelligence, Mobile App Development, IT staff augmentation, and more and has a midsize team.Read More
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59$10,000+10 - 49 employeesLondon, EnglandApplication development firm Redbee Software was founded in 2018. Their small team is located in Cluj-Napoca, Romania; New York, New York and London, England and specializes in Mobile App Development, Web Development, and UX/UI Design.Read More
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60$10,000+1,000 - 9,999 employeesLondon, EnglandDevsinc is a San Jose, California-based software development firm. The large firm was launched in 2009. Their team offers Custom Software Development, E-Commerce Development, Mobile App Development, Web Development, and more.Read More
Clients
Xiaomi Levis Al-Jouf (JADCO) Al Rajhi Bank (Saudia Arabia)Industries
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