Top 70 Cross Platform App Developers in Sofia
The Best of December 2025Looking for a top cross platform mobile app development company in Sofia?
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 Sofia. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Sofia Cross Platform Mobile App Development Companies
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1$50,000+1,000 - 9,999 employeesSao Paolo, BrazilRead More
Headquartered in L'viv, Ukraine; New York, New York; Saratoga, California and Bellevue, Washington, Sigma Software Group is a software development company. The large agency was established in 2002. Their services include Custom Software Development, Web Development, Mobile App Development, BI & big data consulting & SI, and more.
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VolvoIndustries
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2$50,000+1,000 - 9,999 employeesSofia, BulgariaMentorMate, a mobile application development firm, is in Minneapolis, Minnesota; Sofia, Bulgaria; Göteborg, Sweden and Asunción, Paraguay. The company provides Mobile App Development, UX/UI Design, Custom Software Development, Web Development, and more and has a large team.The company was established in 2001.Read More
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AstraZenecaIndustries
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3$10,000+10 - 49 employeesSofia, BulgariaLexis Solutions is an AI Consulting company. The Sofia, Bulgaria-based firm was established in 2017. The small team focuses on AI Consulting, Custom Software Development, Web Development, Mobile App Development, and more.Read More
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Onnoplus.com Kreston Bulmar Reviewhero.io Inoreader.comIndustries
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4$25,000+10 - 49 employeesSofia, BulgariaRead More
Despark is a digital agency headquartered in London with an office in Sofia, Bulgaria. Since 2007, the team of about 40 has provided expertise in web development, mobile app development and UX/UI design. Despark focuses on clients in various industries including healthcare, financial services and consumer products.
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UNIQAIndustries
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5$25,000+250 - 999 employeesBeograd, SerbiaCivitta is an AI development company. Founded in 2013, the midsize company is located in Vilnius, Lithuania; Rīga, Latvia; Chișinău, Moldova and Kyiv, Ukraine. Their team offers Artificial Intelligence, Custom Software Development, cloud consulting & SI, Enterprise App Modernization, and more.Read More
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Global Airlines AI Front Desk BL.INK Franchise RampIndustries
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6$25,000+10 - 49 employeesSofia, BulgariaRead More
App Streams Ltd is a web development firm. Headquartered in Sofia, Bulgaria, their small team focuses on web development, mobile app development, application testing, ux/ui design, and more. The company was launched in 2018.
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CarsCentralIndustries
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7$5,000+10 - 49 employeesSofia, BulgariaCleverix - Software Engineering, an Application Testing company, was launched in 2022. The firm focuses on Application Testing, Web Development, Mobile App Development, and UX/UI Design and has a small team.Read More
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8$10,000+50 - 249 employeesSofia, BulgariaBased in Sofia, Bulgaria and London, England, BGO Software - The Digital Health Lab is a custom software development firm. The midsize company was founded in 2008. Their services include Custom Software Development, IT strategy consulting, IT managed services, Mobile App Development, and more.Read More
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NHS UK - Department of Health, Roche, LabCorp, IQVIA, Curaden, Ampersand Health, BodySpec and many other HealthTech companies.Industries
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9$25,000+50 - 249 employeesSofia, BulgariaRead More
Appolica, a mobile app development firm, was established in 2013. The firm provides mobile app development, web development, ux/ui design, web design, and more and has a small team. The firm is located in Sofia, Bulgaria.
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10$10,000+10 - 49 employeesSofia, BulgariaRead More
Bulcode is a computer software company based in Sofia, Bulgari. Founded in 2016, they employ nine staff who provide a full suite of Drupal services for small and large companies. These services include website development, digital consulting, and support with security and hosting.
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11$5,000+10 - 49 employeesSofia, BulgariaWeb Motion is a Sofia, Bulgaria-based software development firm. The small firm was founded in 2009. Their services include custom software development, web development, mobile app development, and Artificial Intelligence.Read More
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12$1,000+10 - 49 employeesSofia, BulgariaRead More
Looming Tech, an app development company, is located in Sofia, Bulgaria and London, United Kingdom. The agency offers mobile app development, web development, custom software development, e-commerce development, and more and has a small team.The agency was founded in 2020.
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Lyst (http://lyst.co.uk/) Which (http://which.co.uk/) Imray Laurie Norie & Wilson (http://imray.com/) Hintsa (https://www.hintsa.com/)Industries
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13$75,000+250 - 999 employeesСофия, BulgariaRead More
Scalefocus is a provider of custom software solutions with 700+ employees and 7 delivery locations in Bulgaria, North Macedonia, and Türkiye. Founded in 2012, the company partners with clients across various sectors, including IT, Financial Services, Energy & Utilities, Aviation, iGaming, and others. With 500+ successful projects in 26 countries, Scalefocus has delivered transformative results for 300+ clients, including Fortune 500 companies, innovative start-ups, and established leaders.
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CuradenIndustries
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14$25,000+50 - 249 employeesSofia, BulgariaAthlon: Global Design Company is an UX agency launched in 2009. The agency focuses on UX/UI Design, Web Design, Product Design, Web Development, and more and has a midsize team.Read More
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15$50,000+50 - 249 employeesSofia, BulgariaRead More
Devision is a development outsourcing firm based in Sofia, Bulgaria with an office in Ukraine. Established in 2007, Devision has just under 60 employees and provides a wide range of development services based on a comprehensive technology stack. They offer development of custom software, web applications, and Android and iOS mobile apps to mid-market and enterprise clients in the business services, IT, and telecommunications sectors.
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COPYBOOKIndustries
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16Undisclosed2 - 9 employeesSofia, BulgariaPrimeWeb is a software development company located in Sofia, Bulgaria. The small team offers custom software development, web development, mobile app development, e-commerce development, and more. The company was launched in 2022.Read More
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17$10,000+10 - 49 employeesSofia, BulgariaRead More
Kvaba Interactive is a software agency founded in 2015 in Sofia, Bulgaria. Their team of no more than 50 specializes in web, custom software, and AR/VR development solutions for clients in the industries of advertising, gaming, and arts.
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VolkswagenIndustries
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18$10,000+10 - 49 employeesSofia, BulgariaRead More
Perspective Unity Ltd. Is a custom software development firm. They are headquartered in Sofia, Bulgaria; Meyrin, Switzerland and Whistler, Canada and have a small team that focuses on Custom Software Development, CRM consulting and SI, UX/UI Design, and Mobile App Development. The firm was established in 2014.
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AT&TIndustries
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19$25,000+2 - 9 employeesSofia, BulgariaSoftaware Ltd. Is a website development company headquartered in Sofia, Bulgaria. The small agency was launched in 2021. Their team specializes in web development, mobile app development, and blockchain.Read More
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20$5,000+2 - 9 employeesSofia, BulgariaRead More
EditCreation is a software company founded in 2011 with fewer than 10 experts. Based in Sofia, Bulgaria, they offer custom software, web, and mobile app development solutions for small and mid-market firms in the fields of arts, gambling, and other industries.
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JamadviceIndustries
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21$10,000+10 - 49 employeesSofia, BulgariaRead More
Founded in 2014, Futurist Labs is a headquartered in Silicon Beach and Silicon Valley, Calif. with an international office in Bulgaria. The development agency of 10+ teammates has expertise in custom software development, mobile app development, and web development. The team serves clients across a range of industries from has consumer products and IT to advertising.
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L'OrealIndustries
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22$10,000+10 - 49 employeesSofia, BulgariaHeadquartered in Sofia, Bulgaria, Ninefold is an app development firm. The small agency was established in 2016. Their services include Mobile App Development, UX/UI Design, IT strategy consulting, Custom Software Development, and more.Read More
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PlantSnapIndustries
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23$25,000+10 - 49 employeesSofia, BulgariaRead More
Infoleven is a web and app development company founded in 2015. Based in Sofia, Bulgaria and Munich Germany, they have a team of around 30 employees. Their services mainly focus on custom software development, web development, and ERP consulting & SI.
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Hubert Burda MediaIndustries
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24$10,000+10 - 49 employeesSofia, BulgariaRead More
Donatix is a development company headquartered in Sofia, Bulgaria and founded in 2015. The agency has another location in London, in the UK. Donatix's team of about 10 employees specializes in web design, but also provides mobile app development. Many of Donatix's clients are small businesses.
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BayerIndustries
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25$1,000+10 - 49 employeesSofia, BulgariaMaxSoft is a small software development company. In Sofia, Bulgaria, the agency was established in 2014. Their team specializes in Custom Software Development, Mobile App Development, Web Development, and Other Application Development.Read More
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Viber -
26$5,000+250 - 999 employeesSofia, BulgariaStanga1 is a software development firm founded in 1999. They are headquartered in Sofia, Bulgaria; New York, New York; Petach Tikva, Israel and Plovdiv, Bulgaria and have a midsize team. The agency provides Custom Software Development, IT staff augmentation, Web Development, cloud consulting & SI, and more.Read More
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limehome Imperva MedixIndustries
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27$10,000+50 - 249 employeesSofia, BulgariaSupportica Solutions is a midsize IT staff augmentation company. The Sofia, Bulgaria-based firm was founded in 2019. Their services include IT staff augmentation, Custom Software Development, IT managed services, Mobile App Development, and more.Read More
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28$25,000+50 - 249 employeesSofia, BulgariaDroxic is a software development firm. Established in 2012, the midsize company is in Sofia, Bulgaria; Niš, Serbia and Sofia, Bulgaria. Their services include Custom Software Development, Web Development, IT strategy consulting, Mobile App Development, and more.Read More
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Grohe, HMD, CNN, Viessmann, British Airways -
29$1,000+10 - 49 employeesSofia, BulgariaMK IT is an IT staff augmentation company. They focus on IT staff augmentation, web development, mobile app development, and corporate training and were launched in 2016. Their small team is in Sofia, Bulgaria.Read More
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30$1,000+10 - 49 employeesSofia, BulgariaRead More
IoT development company ThingsLog is based in Sofia, Bulgaria. Founded in 2013, the small team provides IoT development, IT managed services, web development, mobile app development, and more.
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