Finding the right team to build a cross-platform app isn’t always easy. Europe is packed with talented developers, but not every company is the right fit for your project. Some are great at coding but miss the bigger picture; others might get the tech right but struggle with communication. The companies we’re highlighting here aren’t just developers – they’re partners who think strategically, adapt when things change, and actually care about creating apps people enjoy using.
1. A-Listware
We work with companies across Europe to build cross-platform mobile applications, focusing on making development teams fit seamlessly into client projects. Our approach balances technical expertise with practical project management, so communication stays smooth and work progresses steadily. We’ve spent over two decades refining how we manage teams and ensure developers integrate well with existing company structures.
Our process revolves around understanding both the project and the team dynamics. We manage recruitment, onboarding, and ongoing support for developers, making it easier to handle shifting priorities and maintain consistent quality. While we provide flexible support for a range of projects, we also focus on maintaining clear communication and minimizing disruption for the clients we collaborate with.
Key Highlights:
- Ability to set up development teams within 2-4 weeks
- Large pool of potential candidates for cross-platform projects
- Hands-on project management and team supervision
- Emphasis on secure and responsive software solutions
Services:
- Cross-platform mobile app development
- Custom software development
- Team augmentation and outsourcing
- UX/UI design and application services
- Testing and QA
- IT consulting and managed services
- Data analytics and cloud application support
- Cybersecurity and infrastructure management
Contact Information:
- Website: a-listware.com
- Email: info@a-listware.com
- Facebook: www.facebook.com/alistware
- LinkedIn: www.linkedin.com/company/a-listware
- Address: St. Leonards-On-Sea, TN37 7TA, UK
- Phone Number: +44 (0)142 439 01 40
2. Netguru
Netguru takes a full-cycle approach to cross-platform apps, combining design, development, and maintenance. They focus on getting projects moving quickly through rapid prototyping and user testing, but they also make sure the apps can grow and scale over time.
They’re big on keeping communication clear and making sure the app meets both business and user needs. Whether it’s B2B platforms, marketplaces, or retail solutions, they try to blend technical quality with great user experiences.
Key Highlights:
- Cross-platform mobile app development using modern frameworks like React Native
- End-to-end process from ideation and prototyping to maintenance and scaling
- Experience with B2B solutions, marketplaces, and retail ecosystems
- Integration of AI and personalization features in digital products
- Global client base and team extension capabilities
Services:
- Mobile and web development
- UX/UI and product design
- Rapid prototyping and user research
- AI and cloud solutions
- MVP development
- Quality assurance and software maintenance
- Product scaling and optimization
Contact Information:
- Website: www.netguru.com
- E-mail: hello@netguru.com
- Facebook: www.facebook.com/netguru
- Twitter: x.com/netguru
- LinkedIn: www.linkedin.com/company/netguru
- Address: Nowe Garbary Office Center ul. Małe Garbary 9 61-756 Poznań, Poland
3. STX Next
STX Next works with businesses across Europe to develop cross-platform mobile applications that combine flexibility with scalability. Their teams focus on Python-driven development, leveraging their experience in AI, data, and cloud solutions to build software that adapts to evolving needs. Projects often include integration with existing systems, rapid prototyping, and iterative development, which allows teams to refine functionality while keeping delivery on track.
The company also emphasizes long-term support and collaboration, helping clients maintain and scale their applications as business requirements change. Their approach balances technical expertise with practical problem-solving, ensuring that applications perform reliably across multiple devices while staying aligned with business goals.
Key Highlights:
- Cross-platform mobile development with a Python-centric approach
- Integration with AI, data analytics, and cloud solutions
- Iterative development with rapid prototyping and testing
- Experience in a variety of industries including fintech, edtech, and security
- Delivery centers in Poland and Mexico, with a global reach
Services:
- Mobile and web app development
- AI and machine learning development
- Cloud infrastructure and DevOps solutions
- Data engineering and predictive analytics
- Product design and UX/UI strategy
- Python software development
- Software maintenance and support
Contact Information:
- Website: www.stxnext.com
- E-mail: business@stxnext.com
- Facebook: www.facebook.com/StxNext
- LinkedIn: www.linkedin.com/company/stx-next-ai-solutions
- Instagram: www.instagram.com/stx_next
- Address: 77 Farringdon Road EC1M 3JU United Kingdom
4. Revatics
Revatics develops cross-platform mobile applications and web solutions for a variety of industries, focusing on practical functionality and adaptability. Their teams work closely with clients to understand specific business requirements, building apps that balance performance and usability. Projects often involve iterative development, with regular testing to make sure features work smoothly across multiple devices.
They also emphasize long-term support and scalable solutions, helping businesses adjust their applications as needs change. Their approach blends technical skills with hands-on problem-solving, aiming to create apps that remain reliable and relevant over time while fitting into the broader digital ecosystem of each client.
Key Highlights:
- Cross-platform mobile development with Flutter and React JS
- Custom web development tailored to business needs
- Integration of AI and machine learning solutions
- Agile development process with iterative testing
- Expertise in industries like e-commerce, health, finance, and hospitality
- Locations in the UK and India
Services:
- Mobile app development
- Web development
- UI / UX design
- DevOps implementation
- AI / ML solutions
- Dedicated developer teams for hire
Contact Information:
- Website: www.revatics.co.uk
- E-mail: contact@revatics.co.uk
- Facebook: www.facebook.com/revatics
- LinkedIn: www.linkedin.com/company/revatics
- Instagram: www.instagram.com/revatics.official
- Address: Suite 1227 Unit 3A, 34-35 Hatton Garden, Holborn, London EC1N 8DX
- Phone: +44 20 8040 4343
5. Belitsoft
Belitsoft provides full-cycle software development services for web and mobile platforms, working with clients who need enterprise-grade or open-source solutions. Their teams handle both front-end and back-end development, focusing on building secure, scalable, and maintainable products. Projects range from creating new software from scratch to modernizing legacy systems, and they often integrate cloud technologies, AI, and third-party services. They also offer staff augmentation, allowing clients to expand their development capacity as needed.
The company emphasizes practical collaboration, ensuring that offshore teams are aligned with client processes and time zones. They maintain structured workflows with clear reporting and communication, which helps keep projects on track and reduces the risk of delays. Their approach includes testing, modernization, and ongoing support, making it easier for clients to maintain and enhance software over time.
Key Highlights:
- Full-cycle software development for web and mobile
- Focus on scalable, secure, and maintainable solutions
- Cloud integration and modernization of legacy systems
- Staff augmentation for flexible team scaling
- Practical collaboration with attention to time zones and reporting
- AI and third-party system integration capabilities
Services:
- Custom software development
- Cross-platform mobile app development (React Native, Xamarin, Flutter)
- Web development and responsive design
- Database development and integration
- Cloud development and migration (AWS, Azure, Google Cloud)
- Software modernization and technical upgrades
- QA and automated testing
Contact Information:
- Website: belitsoft.com
- E-mail: info@belitsoft.com
- Facebook: www.facebook.com/Belitsoft
- Twitter: x.com/BelitsoftCom
- LinkedIn: www.linkedin.com/company/belitsoft-llc
- Phone: +44 (20) 3318-18-53
6. Sigma Software
Sigma Software works with enterprises, startups, and product companies to provide custom software solutions and IT consulting. Their approach often combines global delivery with a particular focus on Scandinavian business culture and Ukrainian engineering talent, aiming for collaboration that balances structure with practical problem-solving. They support clients not only with software development but also by setting up dedicated teams that integrate with in-house resources. Their work spans multiple industries, adapting tools and practices to meet the needs of each project while maintaining an emphasis on scalability and maintainability.
The company also emphasizes process support and automation, helping clients streamline workflows and reduce complexity in software operations. Their teams handle full development cycles, from discovery and planning to implementation and ongoing maintenance, often including cloud-based solutions and system integrations. This makes it easier for clients to manage technical workloads while keeping focus on their core business objectives.
Key Highlights:
- Custom software development for diverse industries
- IT consulting and process optimization
- Dedicated team setup and integration with client teams
- Focus on scalable, maintainable, and adaptable solutions
- Emphasis on workflow automation and system integration
Services:
- Cross-platform mobile app development
- Web and desktop application development
- Cloud solutions and cloud migration
- IT consulting and technical advisory
- Dedicated software teams and staff augmentation
- Software maintenance and post-launch support
Contact Information:
- Website: sigma.software
- E-mail: info@sigma.software
- Facebook: www.facebook.com/SIGMASOFTWAREGROUP
- Twitter: x.com/sigmaswgroup
- Instagram: www.instagram.com/sigma_software
- Address: 41 Devonshire Street, Ground Floor London, United Kingdom, W1G 7AJ
- Phone: +442033843498
7. Apptunix
Apptunix works with all kinds of businesses – from startups to big enterprises – building custom software and mobile apps that actually fit the way people work and use technology. They don’t just code; they try to understand user behavior and industry trends, and they bring in AI or blockchain when it makes sense. From a first concept or MVP to a full-blown app launch, they’re there to make sure everything runs smoothly.
They’re also flexible when it comes to team support. If a project suddenly needs more developers, they can scale up fast. Beyond mobile and web apps, they tackle enterprise systems, on-demand platforms, and specialized tech solutions, adjusting to whatever each project calls for.
Key Highlights:
- Custom software development for enterprises and startups
- Integration of AI, blockchain, and emerging technologies
- Flexible team augmentation for project scaling
- Industry-specific solutions across multiple sectors
- Focus on user-centered design and practical implementation
Services:
- Mobile App Development (iOS, Android, Flutter, React Native, PWA)
- Web App Development
- Blockchain & Cryptocurrency Development
- MVP & Enterprise Software Development
- UX/UI Design
- AI Development Services
- IT Staff Augmentation
- Digital Marketing
Contact Information:
- Website: www.apptunix.com
- E-mail: sales@apptunix.com
- Facebook: www.facebook.com/Apptunixappdevelopment
- Twitter: x.com/ApptunixUS
- LinkedIn: www.linkedin.com/company/apptunixus
- Instagram: www.instagram.com/apptunixus
- Address: 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ, United Kingdom
8. LeanCode
LeanCode helps scale-ups and enterprise clients design and develop software products that actually work for them. They break projects into phases – discovery, delivery, growth – so teams don’t get overwhelmed and solutions stay practical. Flutter is their go-to for cross-platform apps, but they also work with .NET and React, depending on the project.
They’re big on understanding your problems before diving in. That means workshops, audits, and strategic consulting before any heavy development starts. Plus, if you need extra hands or specific expertise, they can provide team augmentation to make scaling easier. They’ve worked across banking, healthcare, sports, and FinTech, which means they can handle both mobile and enterprise-level projects.
Key Highlights:
- Focus on discovery, delivery, and growth phases in development
- Strong expertise in Flutter for cross-platform apps
- Combination of technical and strategic consulting
- Support for enterprise and scale-up clients
- Experience across multiple industries
Services:
- Custom Mobile App Development
- Flutter Mobile, Web, and Desktop App Development
- Custom Web App Development
- Design Thinking Workshops
- Mobile App Audit
- AI-Assisted Development
- IT Staff Augmentation
- Automated UI Testing in Flutter
Contact Information:
- Website: leancode.co
- E-mail: office@leancode.pl
- Facebook: www.facebook.com/LeanCodePL
- Twitter: x.com/LeanCodePl
- LinkedIn: www.linkedin.com/company/leancode
- Instagram: www.instagram.com/leancode_pl
- Address: Wróbla 8A, 02-736 Warsaw, Poland
9. Tapptitude
Tapptitude works with product teams to build and scale mobile apps that actually get used. Their approach mixes strategy, design, and development in one smooth workflow. They pay attention to the user experience and iterate quickly, testing features to make sure they make sense in the real world.
They handle both iOS and Android, often using React Native or Flutter so you don’t have to duplicate work. Their engagement is flexible – you can hire them for a full product studio experience or just extend your existing team. They also provide AI, testing, and product management support. Their projects range from wellness apps to e-commerce platforms, showing they can adapt to a variety of industries.
Key Highlights:
- Cross-platform mobile development using React Native and Flutter
- End-to-end product support from concept to scaling
- Focus on user experience and rapid validation
- Flexible engagement models for startups and established teams
- Experience across multiple industries including wellness, commerce, and real estate
Services:
- UX/UI Audit
- Strategic Product Definition
- Mobile App Development (iOS & Android)
- Cross-Platform App Development
- Low Code / No-Code Solutions
- Code Audit (Mobile, Full Stack)
- iOS Solution Design
- AI & ML Integration
- Product Management and Testing
Contact Information:
- Website: tapptitude.com
- E-mail: hello@tapptitude.com
- Facebook: www.facebook.com/tapptitude
- Twitter: x.com/tapptitude
- LinkedIn: www.linkedin.com/company/tapptitude
- Instagram: www.instagram.com/tapptitude
- Address: The Handbag Factory, 3 Loughborough Street, SE11 5RB
- Phone: +44 20 719 39759
10. Drupfan
Drupfan provides cross-platform mobile development services for businesses that need applications running smoothly across multiple devices and operating systems. Their approach covers the entire lifecycle, from building new apps to migrating existing native solutions into cross-platform frameworks. They emphasize creating responsive and adaptive applications that maintain usability and functionality on both mobile and desktop platforms. Their teams combine skills in HTML5, CSS3, and JavaScript with experience in hybrid and native-like app solutions, ensuring applications meet diverse business needs without compromising performance.
The company offers flexible engagement models, including staff augmentation, dedicated teams, and team extensions, allowing clients to scale resources according to project requirements. They also provide ongoing support and maintenance for cross-platform applications, keeping apps updated, secure, and optimized over time. Drupfan’s work spans a wide range of industries, from e-commerce and healthcare to logistics and media, demonstrating adaptability to different business challenges and technology demands.
Key Highlights:
- Cross-platform mobile and hybrid app development
- Expertise in multiple frameworks and coding languages
- Flexible engagement models including staff augmentation and dedicated teams
- Application migration from native to cross-platform solutions
- Continuous support and maintenance for apps
Services:
- Cross-Platform Mobile App Development
- Hybrid App Development
- Mobile App Migration to Cross-Platform
- Cross-Platform App Support & Maintenance
- Custom Multi-Platform Application Solutions
- Staff Augmentation and Team Extension
Contact Information:
- Website: drupfan.com
- E-mail: ds@drupfan.com
- Facebook: www.facebook.com/drupfan
- Twitter: x.com/drupfan
- LinkedIn: www.linkedin.com/company/drupfan
- Instagram: www.instagram.com/drupfan
- Address: ul. Długa 16a, 05-270 Marki, Warsaw
- Phone: +48 883 745 272
11. Inoxoft
Inoxoft provides cross-platform mobile development for businesses seeking applications that work across multiple devices and operating systems. Their approach covers the full development cycle, from planning and design to deployment and maintenance. They focus on building apps that maintain native-like performance on both iOS and Android while leveraging technologies like React Native, Flutter, and Ionic. Their teams consider platform-specific requirements to ensure a consistent user experience, integrating native device features such as GPS, camera, and notifications when needed.
The company offers flexible delivery models, including dedicated development teams, IT staff augmentation, and team extensions, allowing clients to scale resources according to project demands. They also include quality assurance and testing at every stage of development, aiming to catch and fix issues early. Inoxoft works across various industries, including healthcare, fintech, logistics, and real estate, providing solutions that are designed to grow and adapt alongside the client’s business needs.
Key Highlights:
- Full-cycle cross-platform app development
- Expertise in React Native, Flutter, and Ionic
- Flexible engagement models including dedicated teams and team extension
- QA and testing integrated throughout development
- Support for platform-specific features and native-like performance
Services:
- Cross-Platform Mobile App Development
- Custom iOS and Android App Development
- Hybrid App Development
- Mobile App QA and Testing
- Team Extension and Dedicated Development Teams
- Software Product Discovery and Integration
Contact Information:
- Website: inoxoft.com
- E-mail: contact@inoxoft.com
- Facebook: www.facebook.com/inoxoft
- Twitter: x.com/InoXoft_Inc
- LinkedIn: www.linkedin.com/company/inoxoft
- Instagram: www.instagram.com/inoxoft_team
- Address: Muchoborska 8, budynek b1, 1 pietro, Wrocław, 54-424
- Phone: (267) 310-2646
12. Fingoweb
Fingoweb builds cross-platform mobile apps using React Native, which basically means you get a single app that works smoothly on both iOS and Android. They focus on making sure apps not only look good but perform consistently across devices, and they try to speed up development without cutting corners. Before writing a single line of code, they take the time to really understand your business goals, then move through design, development, testing, and ongoing maintenance to keep things running smoothly. They also know how to tap into native device features – push notifications, cameras, and the like – so the apps feel fully “native.”
They’ve worked across industries like healthcare, education, entertainment, and real estate, so they’re used to adapting to different needs. Fingoweb also offers options to set up dedicated development teams or ongoing support, which makes it easy to scale your app as your business grows or changes.
Key Highlights:
- Single codebase for multiple platforms
- React Native expertise for native-like performance
- Integration of device-specific features
- Structured development process from planning to maintenance
- Support for various industries and application types
Services:
- Cross-Platform Mobile App Development
- Mobile Application Design
- Web Application Development
- Cloud Application Development
- Server Infrastructure Management
- Dedicated Development Teams
- Generative AI App Development
Contact Information:
- Website: www.fingoweb.com
- E-mail: contact@fingoweb.com
- Facebook: www.facebook.com/fingowebcom
- LinkedIn: www.linkedin.com/company/fingoweb
- Instagram: www.instagram.com/fingoweb
- Address: Ostatnia 1C/B14 31-444 Kraków
- Phone: +48 660 901 080
Conclusion
When you look at the landscape of cross-platform mobile development across Europe, what stands out is the diversity of approaches and expertise. Some teams lean heavily on specific frameworks like React Native or Flutter, while others take a broader approach, adapting their stack to the unique needs of each project. What ties them together is a focus on building apps that feel natural on multiple devices, balancing technical performance with a user-friendly experience.
It’s clear that these companies aren’t just writing code – they’re thinking about how people interact with technology every day. From planning and design to testing and ongoing maintenance, they handle the details that make an app work smoothly across platforms. Choosing the right partner is often about matching their approach to your project goals, and Europe has plenty of teams that can do just that, providing flexibility, technical depth, and practical support for projects of all sizes.
