Mobile app development services can cover much more than coding an iOS or Android interface. Depending on the provider, businesses can get product planning, UX/UI design, native or cross-platform engineering, backend development, testing, store submission, and ongoing maintenance. The companies below represent different approaches, from dedicated mobile studios to broader engineering teams supporting complex mobile products.
1. Gilzor
Gilzor handles mobile products from initial requirements and product planning through UX/UI design, engineering, testing, publishing, and post-launch support. Its mobile stack covers Kotlin, Swift, Objective-C, SwiftUI, and React Native, allowing the team to work on native iOS and Android applications as well as cross-platform products.
The company also works with existing applications that need architectural fixes, performance improvements, new features, or technical troubleshooting rather than a complete rebuild. Backend integration, QA, app maintenance, and go-to-market support can be included in the same engagement, making Gilzor relevant to startups, SMBs, and established product teams.
Key Facts
- Best for: New mobile products and existing apps requiring further development
- Core services: Mobile app development, iOS and Android development, cross-platform apps, UX/UI, backend integration, QA
- Technologies: Kotlin, Swift, Objective-C, SwiftUI, React Native
- Locations: Warsaw, Poland and Limassol, Cyprus
- Notable strength: Full product lifecycle from planning through publishing and maintenance
Contact Information
- Website: www.gilzor.com
- Email: contacts@gilzor.com
- LinkedIn: www.linkedin.com/company/gilzor-softwaredevelopment
- Address: Poland, Warsaw, Office 58, street Adama Mickiewicza 37, 01-625
2. A-listware
A-listware provides mobile app development covering product design, consulting, UI/UX, engineering, integration, testing, maintenance, and modernization. Its developers work on native Android and iOS products as well as cross-platform and progressive web applications, with technologies including Swift, Kotlin, React Native, Flutter, Xamarin, and related mobile frameworks.
The company can also connect applications with APIs, backend platforms, smart devices, and existing business systems. Its mobile offering extends to wearables and embedded software, while its QA team covers functional, performance, security, accessibility, and UX testing. This scope suits both greenfield products and companies modernizing an older application.
Key Facts
- Best for: Mobile products requiring a broad engineering and QA team
- Core services: Mobile development, product design, integrations, testing, support, modernization
- Platforms: iOS, Android, cross-platform, PWA
- Technologies: Swift, Kotlin, React Native, Flutter, Xamarin
- Locations: United Kingdom and United States
Contact Information
- Website: a-listware.com
- Phone: +1 (888) 337 93 73
- Email: info@a-listware.com
- Address: North Bergen, NJ 07047, USA
- LinkedIn: www.linkedin.com/company/a-listware
- Facebook: www.facebook.com/alistware
3. Mobian
Mobian combines mobile engineering with flexible team augmentation and end-to-end product development. Its team includes mobile and Android engineers, while its broader mobile capabilities cover iOS, Android, and Flutter development supported by backend engineering, APIs, cloud infrastructure, and QA.
Clients can bring in individual specialists to strengthen an existing product team or use Mobian for a larger delivery covering features, modules, or an entire application. The company continues supporting products after launch, including updates required as operating systems and technical dependencies change. Its work spans areas such as healthcare, finance, government, and other business software environments.
Key Facts
- Best for: Companies needing dedicated mobile specialists or turnkey development
- Core services: Mobile development, backend engineering, QA, product development, team augmentation
- Platforms: iOS, Android, Flutter
- Engagement models: Team augmentation and end-to-end development
- Location: Tallinn, Estonia
Contact Information
- Website: mobian.studio
- Email: info@mobian.studio
- Address: Harju maakond, Tallinn, Kesklinna Linnaosa, Masina tn 22, 10113
- LinkedIn: www.linkedin.com/company/mobian-studio
4. Itexus
Itexus provides full-cycle mobile app development covering discovery, requirements analysis, prototyping, UX/UI design, engineering, backend infrastructure, testing, deployment, and post-production support. Its mobile developers build native applications with Swift and Kotlin as well as cross-platform products using frameworks such as Flutter and React Native.
The company’s experience is particularly relevant to applications involving financial services, payments, digital wallets, healthcare data, commerce, and other products with complicated backend or integration requirements. Itexus can deliver an entire mobile product or provide developers who work alongside an internal team. App Store and Google Play deployment support is also available.
Key Facts
- Best for: Fintech and data-heavy mobile applications
- Core services: Mobile engineering, UX/UI, backend development, QA, cloud engineering, support
- Technologies: Swift, Kotlin, Flutter, React Native
- Specialization: Fintech, payments, digital wallets, health and enterprise applications
- Locations: United States and Poland
Contact Information
- Website: itexus.com
- Email: info@itexus.com
- Address: 8, The Green, STE road, Dover, DE 19901, United States
- LinkedIn: www.linkedin.com/company/itexus
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- Instagram: www.instagram.com/itexus.soft
5. OSKI Solutions
OSKI Solutions offers mobile application development across native iOS, native Android, and cross-platform projects. Its broader mobile stack includes React Native, Flutter, .NET MAUI, Swift, Kotlin, TypeScript, Firebase, Node.js, and .NET, giving the company options for products that require both a mobile client and a substantial backend.
Mobile engagements can cover discovery, UX/UI design, APIs, authentication, offline synchronization, device integrations, testing, store submission, CI/CD, and ongoing updates. OSKI also handles enterprise requirements such as role-based access and integration with internal systems. Its cross-platform work is particularly relevant when companies want iOS and Android versions supported by a shared codebase.
Key Facts
- Best for: Native and cross-platform mobile products
- Core services: Mobile development, UI/UX, backend APIs, testing, deployment, support
- Technologies: React Native, Flutter, .NET MAUI, Swift, Kotlin, TypeScript
- Platforms: iOS and Android
- Location: Poland
Contact Information
- Website: oski.site
- Phone: +48571282759
- Email: contact@oski.site
- Address: Kaupmehe tn 7-120, Tallinn, 10114, Estonia
- LinkedIn: www.linkedin.com/company/oski-solutions
6. 21Century.Tech
21Century.Tech uses a senior-led, AI-assisted development model for production software. Its engineers remain responsible for architecture, business logic, security decisions, code review, and final quality, while AI tools are used for tasks such as scaffolding, tests, documentation, and larger refactoring work.
For mobile product engagements, the company is most relevant when the requirement extends beyond the application interface into APIs, backend services, integrations, full-stack features, deployment, or modernization of an existing codebase. Its delivery model can also support MVP development where teams already have a specification, design file, or defined product brief and need engineering execution.
Key Facts
- Best for: Mobile MVPs supported by backend and integration engineering
- Core services: Product engineering, integrations, refactoring, testing, documentation, deployment
- Development model: Senior-led, AI-assisted engineering
- Location: Miami, remote-first
- Notable strength: Full-stack engineering with human review of production code
Contact Information
- Website: 21century.tech
- Email: kirill@oski.site
7. Net-Devs
net-devs is an enterprise engineering company working across backend systems, cloud infrastructure, modern front ends, AI integrations, and software modernization. Its technical coverage includes .NET, JVM technologies, Node.js, Python, Go, React, Angular, Vue, and TypeScript, with senior engineers selecting technologies around the requirements of each product.
For mobile initiatives, net-devs fits projects where the mobile application is one part of a larger software environment. That can include APIs, cloud platforms, authentication, internal systems, data processing, and other services behind the mobile interface. Its process covers discovery, prototyping, architecture, development, QA, deployment, and continuing product evolution.
Key Facts
- Best for: Enterprise mobile ecosystems with substantial backend requirements
- Core services: Enterprise development, cloud engineering, front-end development, AI engineering
- Technologies: .NET, JVM, Node.js, Python, Go, React, Angular, Vue, TypeScript
- Delivery model: Senior-led, AI-augmented engineering
- Location: Warsaw, Poland
Contact Information
- Website: net-devs.com
- Phone: +48 571 282 759
- Email: contact@net-devs.com
- Address: Obrzeżna 1D, 02-691 Warszawa
- LinkedIn: www.linkedin.com/company/net-devs
8. SoftPro
SoftPro focuses primarily on custom software, web applications, cloud development, and Microsoft-stack engineering. Its core technologies include .NET, ASP.NET Core, C#, Azure, React, Node.js, and related web and cloud technologies. For businesses planning a mobile-facing product, its clearest fit is therefore the infrastructure and application layer around mobile use rather than a conventional native iOS or Android engagement.
SoftPro develops progressive web applications with capabilities such as offline access and push notifications, while its backend and cloud experience can support APIs, data processing, business logic, and integrations used by mobile products. It also provides ongoing maintenance after deployment.
Key Facts
- Best for: PWAs and backend systems supporting mobile-facing products
- Core services: Custom software, web applications, cloud development, PWA development
- Technologies: .NET, ASP.NET Core, C#, React, Node.js, Azure
- Specialization: Microsoft-stack application and cloud development
- Location: Warsaw, Poland
Contact Information
- Website: soft-pro.pl
- Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401
Conclusion
Mobile app development services vary widely depending on the product, technical requirements, and level of support needed. Some providers focus on native and cross-platform mobile engineering, while others are better suited to projects that also require backend systems, cloud infrastructure, integrations, modernization, or ongoing product development.
The right choice depends on factors such as the target platforms, preferred technology stack, existing internal resources, integration complexity, and whether the project starts from scratch or builds on an existing application. Comparing these areas carefully can help businesses narrow the list to companies whose capabilities match the actual scope of the mobile product.