Press release
8 Best Cross-Platform Mobile App Development Companies (2026)
1. Gilzor
Gilzor develops mobile applications for startups, SMBs, and product companies, covering both native and cross-platform delivery. Its cross-platform work centers on React Native, supported by experience with Kotlin, Swift, Objective-C, and SwiftUI when platform-specific development is required.
Projects can extend beyond the mobile interface to UX/UI design, backend integration, architecture improvements, QA, deployment, and ongoing product support. Gilzor also works with existing applications that need performance fixes, architectural changes, or further feature development, which makes its service relevant to both new products and established apps.
Key Facts
● Best for: Startups, SMBs, and existing digital products
● Core services: Cross-platform mobile app development, iOS and Android development, UX/UI design, backend integration, QA
● Cross-platform technology: React Native
● Project types: New applications, product improvements, app stabilization, ongoing development
● Locations: Warsaw, Poland and Limassol, Cyprus
Contact Information
● Website: https://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 full-cycle mobile engineering for native and cross-platform products. Its mobile technology stack includes React Native, Flutter, Xamarin, and progressive web applications alongside Swift, Kotlin, Objective-C, and other native technologies.
The company can cover product design, mobile consulting, UI/UX, development, API and backend integration, testing, modernization, and post-launch support. Its mobile portfolio spans areas such as e-commerce, telemedicine, banking, field services, and remote-control applications. A-listware also offers dedicated developers and teams, giving companies the option to supplement internal engineering resources rather than outsource an entire application.
Key Facts
● Best for: Companies needing development teams alongside full-cycle mobile services
● Core services: Mobile consulting, design, development, integration, testing, modernization, support
● Cross-platform technologies: React Native, Flutter, Xamarin
● Project types: Consumer applications, enterprise apps, modernization, ongoing product development
● Industries represented in mobile work: E-commerce, telemedicine, banking, field services
Contact Information
● Website: a-listware.com
● Phone: +1 (888) 337 93 73
● Email: info@a-listware.com
● Address: North Bergen, NJ 07047, USA
● LinkedIn: linkedin.com/company/a-listware
● Facebook: facebook.com/alistware
3. net-devs
net-devs provides senior-led software engineering for enterprise products, with delivery spanning application development, cloud platforms, AI engineering, modern front-end work, testing, and ongoing product evolution. Its team includes dedicated mobile engineering expertise, while the wider delivery model is stack-agnostic and designed around selecting technologies according to the product rather than a fixed framework.
net-devs develops cross-platform mobile applications as part of broader enterprise systems, incorporating APIs, cloud infrastructure, authentication, shared backend logic, and offline workflows. Its published work covers cross-platform authentication, shared APIs, and offline-first mobile requirements for logistics environments.
Key Facts
● Best for: Mobile products connected to broader enterprise systems
● Core services: Enterprise development, AI engineering, cloud platforms, modern front-end development
● Delivery model: Senior-led, AI-augmented engineering
● Project types: Enterprise applications, connected platforms, modernization, logistics software
● 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: linkedin.com/company/net-devs
4. OSKI Solutions
OSKI Solutions develops cross-platform applications from shared codebases using Flutter, React Native, and .NET MAUI. Its services cover the wider application lifecycle, including UX/UI, backend APIs, authentication, device integrations, offline functionality, testing, app-store submission, CI/CD, and post-release maintenance.
The company can also connect cross-platform clients to existing enterprise systems and implement platform-specific functionality for features such as cameras, GPS, biometrics, secure storage, push notifications, and background tasks. This makes its delivery model relevant when a project needs substantial shared code but cannot avoid deeper access to iOS or Android capabilities.
Key Facts
● Best for: Products requiring shared code plus native device integrations
● Core services: Cross-platform development, backend APIs, UX/UI, testing, release support
● Cross-platform technologies: Flutter, React Native, .NET MAUI
● Supporting technologies: TypeScript, C#, Node.js, ASP.NET Core
● Project types: Consumer mobile apps, enterprise apps, connected mobile systems
Contact Information
● Website: oski.site
● Phone: +48571282759
● Email: contact@oski.site
● Address: Kaupmehe tn 7-120, Tallinn, 10114, Estonia
● LinkedIn: linkedin.com/company/oski-solutions
5. Itexus
Itexus combines mobile application development with strong experience in financial technology. Its cross-platform technology stack includes Flutter, React Native, and Xamarin, while Swift, Objective-C, Kotlin, and Java support native mobile projects.
The company develops banking applications, investment products, digital wallets, trading interfaces, portfolio tools, and other client-facing financial systems. Mobile engagements can include UI/UX, backend architecture, real-time data, APIs, offline functionality, testing, and deployment. Businesses can also hire individual mobile developers or extend an existing team with engineers experienced in Flutter, React Native, iOS, and Android.
Key Facts
● Best for: Fintech and financial-service mobile applications
● Core services: Mobile development, UI/UX, fintech engineering, QA, team augmentation
● Cross-platform technologies: Flutter, React Native, Xamarin
● Native technologies: Swift, Objective-C, Kotlin, Java
● Industry focus: Fintech, banking, investment, lending, insurance
Contact Information
● Website: itexus.com
● Email: info@itexus.com
● Address: 8, The Green, STE road, Dover, DE 19901, United States
● LinkedIn: linkedin.com/company/itexus
● Facebook: facebook.com/itexus
● Twitter: x.com/ItexusSoft
● Instagram: instagram.com/itexus.soft
6. Mobian Studio
Mobian Studio works on mobile and AI products through both outsourced delivery and engineering team augmentation. Its mobile offering includes Flutter alongside native iOS and Android development, with backend, API, cloud infrastructure, and QA capabilities available within the same engagement.
The company is particularly relevant when mobile development is one component of a larger software platform. Mobian can handle a project from wireframes through production deployment or place engineers inside an existing development organization. Its stated industry experience covers healthcare, fintech, logistics, telecommunications, and enterprise IT, with continued maintenance and scaling support available after release.
Key Facts
● Best for: Companies combining mobile development with backend or AI engineering
● Core services: Mobile apps, backend development, APIs, QA, cloud, team augmentation
● Cross-platform technology: Flutter
● Engagement models: Outsourcing and outstaffing
● Location: Tallinn, Estonia
Contact Information
● Website: mobian.studio
● Email: info@mobian.studio
● Address: Harju maakond, Tallinn, Kesklinna Linnaosa, Masina tn 22, 10113
● LinkedIn: linkedin.com/company/mobian-studio
7. 21century.tech
21century.tech is a remote-first software engineering studio built around senior developers and AI-assisted delivery. Its current scope includes MVP development, full-stack features, third-party integrations, legacy refactoring, testing, documentation, CI/CD, and production deployment. Senior engineers remain responsible for architecture, business logic, code review, QA, security decisions, and final delivery.
For cross-platform mobile projects, the company is most relevant when the application also requires backend development, APIs, integrations, product features, or work on an existing codebase. Public material from the company does not currently identify a dedicated Flutter or React Native practice, so its role is broader software engineering around mobile products rather than framework-specific cross-platform specialization.
Key Facts
● Best for: Mobile MVPs, integrations, and existing product development
● Core services: Full-stack development, integrations, refactoring, QA, CI/CD
● Development model: Senior-led, AI-assisted engineering
● Project types: MVPs, product features, legacy modernization, third-party integrations
● Location: Miami, United States, remote-first
Contact Information
● Website: 21century.tech
● Email: kirill@oski.site
8. SoftPro
SoftPro is a Warsaw-based custom software company whose core engineering practice covers web applications, cloud systems, full-stack development, and enterprise software. Its current cross-platform work includes Flutter-oriented projects and support for mobile products that depend on connected backend, cloud, and business systems.
The company is more relevant to cross-platform engagements that form part of a wider software ecosystem than to narrowly scoped mobile-only work. Teams that need a shared-code client alongside .NET, React, Azure, AWS, API, or modernization work can keep more of the product architecture within one engineering relationship.
Key Facts
● Best for: Cross-platform apps connected to wider custom software projects
● Core services: Software development, web applications, cloud engineering, AI
● Cross-platform work: Flutter
● Supporting technologies: .NET, React, Azure, AWS
● Location: Warsaw, Poland
Contact Information
● Website: soft-pro.pl
● Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401
Conclusion
Cross-platform mobile app development can reduce duplicated work across iOS and Android while still supporting complex interfaces, backend integrations, device features, and ongoing product updates. The right development partner depends on the framework, product maturity, technical complexity, and whether the project needs a complete delivery team or additional engineering capacity.
Some providers focus closely on Flutter or React Native, while others combine cross-platform development with native engineering, cloud infrastructure, backend systems, product design, and modernization. Comparing these capabilities against the actual requirements of the application helps narrow the list to teams that can support both the initial build and future product development.
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