Hire Offshore Cross Platform App Development Company

Build once. Reach everyone.

Developing separate iOS and Android apps means two codebases, two teams, and double the maintenance cost. Cross-platform development eliminates that duplication — letting you ship a single, high-quality app to all major platforms at significantly lower cost and time-to-market.

Nascenia is a cross-platform app development company with 16+ years of experience building Flutter and React Native applications for startups, scale-ups, and enterprise clients across 25+ countries. Our cross-platform apps have accumulated over 10 million downloads on the App Store and Google Play.

16+ Years experience

10M+ App downloads

25+ Countries served

300+ Projects delivered

Reach iOS & Android Users — Without Building Two Apps Tell us about your project and get a free technical consultation. [ Get a Free Cross-Platform Estimate →  nascenia.com/contact ]

Why Choose Cross-Platform Over Native App Development?

The decision between cross-platform and native development depends on your budget, timeline, performance requirements, and long-term roadmap. For the majority of business applications, cross-platform is the right choice:

	Cross-Platform (Flutter / RN)	Native (Swift / Kotlin)
Development cost	✓ 40–60% lower	✓✓ Higher (two codebases)
Time to market	✓ Faster (single codebase)	✕ Longer
Code reuse	✓ 70–95%	✕ 0%
Performance	✓ Near-native (Flutter)	✓✓ Maximum
Platform-specific UI	~ Good approximation	✓✓ Perfect
Team size needed	✓ 1 team	✕ 2 teams
Maintenance cost	✓ Single codebase	✕ Double maintenance
Best for	Most business apps & MVPs	GPU-heavy / AR / complex hardware

Flutter vs. React Native: Which Should You Choose?

Flutter and React Native are the two dominant cross-platform frameworks, and each has genuine strengths. Here is an honest comparison to help you make the right decision:

Category	Flutter	React Native
Language	Dart (easy to learn, typed)	JavaScript / TypeScript
Rendering	Own rendering engine (Skia/Impeller) — pixel-perfect on all platforms	Native components — looks native to each OS
Performance	Near-native; excellent for animation & complex UI	Very good; slight overhead via JS bridge
Web & Desktop	Strong: iOS, Android, Web, Desktop (one codebase)	Primarily mobile; web support is improving
Ecosystem	Growing fast; strong Google backing	Mature; backed by Meta; huge npm ecosystem
UI consistency	Identical on all platforms	Platform-native look-and-feel by default
Hot reload	Yes — fast development cycles	Yes — fast development cycles
Best for	Highly-designed apps, fintech, e-commerce, games	Apps needing native feel, existing React/JS teams
Nascenia recommends	When UI consistency & performance are top priority	When your team knows React or native components matter

Not sure which framework is right for your project? Our architects have built production apps in both Flutter and React Native. We’ll recommend the right stack for your specific use case — free of charge, no commitment. Contact us: nascenia.com/contact

Our Cross-Platform App Development Services

Nascenia provides end-to-end cross-platform mobile development — from initial discovery and architecture through design, development, QA, launch, and post-release support.

Flutter App Development

We build production-grade Flutter applications with Dart, targeting iOS, Android, web, and desktop from a single codebase. Our Flutter team has shipped apps across fintech, e-commerce, logistics, healthcare, and telecoms — with consistent performance scores of 90+ on both App Store and Google Play.

• Custom Flutter UI with smooth 60/120fps animations
• Flutter BLoC / Riverpod / Provider state management
• Firebase, Supabase, and custom REST / GraphQL API integrations
• Flutter Web and Flutter Desktop deployments
• Existing app migration from React Native or native to Flutter

React Native App Development

React Native is ideal for teams with existing JavaScript or React expertise, or when native platform look-and-feel is a hard requirement. Our React Native engineers build with TypeScript and follow component-driven architecture principles.

• React Native CLI and Expo-based projects
• Custom native modules when needed (bridging to native iOS/Android APIs)
• Redux Toolkit, Zustand, and React Query for state and data management
• Integration with existing web React codebases for shared business logic
• Performance profiling and optimisation for existing React Native apps

UI/UX Design for Mobile

Great cross-platform apps start with great design. Nascenia’s in-house design team creates Figma prototypes optimised for mobile interaction patterns — tested on real devices before a single line of code is written.

API Development & Backend Integration

A mobile app is only as good as the services behind it. We build the backend APIs your app needs — or integrate with your existing infrastructure — using Node.js, Ruby on Rails, Python, and cloud services on AWS, GCP, and Azure.

App Store Submission & Launch Support

We handle the full App Store (Apple) and Google Play submission process: app signing, metadata optimisation, screenshot production, review response management, and post-launch crash monitoring.

Post-Launch Maintenance & Feature Releases

Mobile platforms update constantly. Nascenia provides ongoing maintenance contracts to keep your app current with iOS and Android OS releases, framework updates, and security patches — plus feature development for your product roadmap.

Need a Cross-Platform App Built the Right Way? From MVP to enterprise scale — our team has done it. [ Tell Us About Your App →  nascenia.com/contact ]

How Nascenia Delivers Your Cross-Platform App

Every project follows our five-phase delivery process — proven across 300+ software projects and refined over 14 years:

1. Discovery & Architecture — We define scope, technology stack, API contracts, and infrastructure plan. Deliverable: detailed technical specification and project roadmap.
2. UI/UX Design — Figma wireframes and high-fidelity prototypes reviewed and approved by you before development begins. Mobile-first, tested on real iOS and Android devices.
3. Agile Development — Two-week sprints with working software delivered at the end of every sprint. Shared Jira board, weekly video calls, full code visibility.
4. QA & Testing — Automated test coverage, manual device testing on a minimum of 12 real device/OS combinations, performance profiling, and accessibility audit.
5. Launch & Handover — App Store and Google Play submission, CI/CD pipeline setup, documentation, and a 30-day post-launch warranty period included on every project.

Cross-Platform Projects We’re Proud Of

Here are two examples of the cross-platform work Nascenia has delivered for clients:

CASE STUDY 1 Robi Axiata — My Robi App (React Native) Industry: Telecommunications | Platform: React Native | Platforms: iOS & Android Client: Robi Axiata Ltd — one of Bangladesh’s largest mobile network operators with 52+ million subscribers. Challenge: Robi’s existing customer-facing app was fragmented across legacy codebases on iOS and Android, creating inconsistent UX and a costly dual-maintenance overhead. Response time from the engineering team to user issues was measured in weeks. Solution: Nascenia rebuilt the Robi customer app in React Native — a single codebase serving both iOS and Android. The new app covered bill payment, data pack purchasing, usage dashboards, and customer service integration. A CI/CD pipeline reduced release cycles from monthly to bi-weekly. Outcome: 10,000,000+ combined downloads on App Store and Google Play | App Store rating improved to 4.3 | Release cycle reduced from 4 weeks to 2 weeks | Single codebase cut ongoing maintenance cost by approximately 45% Read Full Case Study

CASE STUDY 2 Smyril Line — Ferry & Travel Booking App (Flutter) Industry: Maritime / Travel | Platform: Flutter | Platforms: iOS, Android & Web Client: Smyril Line — a Faroese shipping company operating passenger ferry routes across the North Atlantic (Denmark, Norway, Iceland, Faroe Islands). Challenge: Smyril Line needed to replace a dated mobile booking experience that was losing customers to competitor apps with more polished UX. The new app needed to handle multi-leg route booking, cabin selection, vehicle transport, and real-time schedule updates — across iOS, Android, and web. Solution: Nascenia built the full booking experience in Flutter — a single codebase deployed to iOS, Android, and web simultaneously. The checkout flow was re-architected from scratch with a step-by-step booking funnel, saved passenger profiles, and deep-links to booking confirmation emails. Outcome: Flutter codebase reduced development time vs. separate native apps by an estimated 38% | Consistent UI across all three platforms (iOS / Android / Web) | Mobile booking conversion rate increased post-launch | Lighthouse performance score of 89 on web version Read Full Case Study

Why Choose Nascenia as Your Cross-Platform Development Partner?

Flutter & React Native Specialists Our mobile team works exclusively with Flutter and React Native — not generalists rotating between frameworks. Your project is staffed with developers who ship cross-platform apps every week. Competitive Offshore Rates Nascenia’s Bangladesh-based rates start from $35–$55/hr — 40–60% below US and Western European agencies, and competitive with Eastern European providers, while maintaining the same engineering standards. Proven at Scale Our cross-platform apps serve millions of users. Robi Axiata’s app alone has 10M+ downloads. We understand what it takes to build for scale — not just for demo.

16 Years of Software Delivery Founded in 2009, Nascenia has completed 300+ software projects for clients in 25+ countries. We are recipients of the Bangladesh President’s Award and BASIS National ICT Award — the country’s highest technology recognition. Timezone-Friendly for Europe & Australia GMT+6 means morning overlap with European clients and afternoon overlap with Australian clients. North American clients receive same-day responses on async workflows — and we offer extended hours for critical sprints. Full-Stack Capability Mobile is only one part of your product. Nascenia’s team also covers backend APIs, web development, QA, UI/UX design, and cloud infrastructure — so you don’t need to manage multiple vendors.

Ready to Build Your Cross-Platform App? Get a free 30-minute architecture consultation — we’ll recommend the right stack and give you a realistic budget and timeline. [ Get Your Free Project Estimate →  nascenia.com/contact ]

Or email us directly:  mark@nascenia.com

Frequently Asked Questions

Q1: What is cross-platform app development?

Cross-platform app development means writing a single codebase that runs natively on multiple platforms — primarily iOS and Android, but often also web and desktop. Frameworks like Flutter and React Native achieve this by compiling or bridging the shared code into platform-specific output. The result is a significant reduction in development cost and time compared to building separate native apps for each platform, with performance that is near-native for the vast majority of use cases.

Q2: Is Flutter or React Native better for my app?

It depends on your specific requirements. Flutter is generally the better choice when you need a highly consistent UI across all platforms, pixel-perfect custom designs, or when targeting web and desktop alongside mobile. React Native is often preferred when your team already knows React or JavaScript, when platform-native look-and-feel is important, or when you need to integrate with a large existing npm package ecosystem. Nascenia’s architects will give you a specific, reasoned recommendation for your use case — free of charge, before you commit to anything.

Q3: How much does cross-platform app development cost?

Cross-platform development costs vary based on scope, features, integrations, and the development partner you choose. As a rough guide: a simple MVP app typically costs $15,000–$40,000. A mid-complexity app with backend API, admin dashboard, and third-party integrations typically runs $40,000–$100,000. Enterprise-grade apps with complex business logic, real-time features, and high scalability requirements range from $100,000 upward. Nascenia’s offshore rates ($35–$55/hr) mean equivalent quality at 40–60% lower cost than US or UK development agencies.

Q4: How long does it take to build a cross-platform app?

A well-scoped MVP can typically be delivered in 10–16 weeks. A full-featured app with custom backend, third-party integrations, and a polished UX usually takes 16–28 weeks. Timeline depends heavily on scope, revision cycles, and third-party API availability. Nascenia provides a detailed sprint-by-sprint project timeline with milestones before work begins — no vague estimates.

Q5: Can you migrate my existing native app to cross-platform?

Yes. Nascenia has experience migrating native iOS and Android apps to both Flutter and React Native. We begin with a full audit of your existing app’s functionality, third-party dependencies, and native integrations. We then build the cross-platform version in parallel, releasing it as a replacement with full feature parity. Migration projects typically take 12–20 weeks depending on app complexity.

Q6: Do you handle App Store and Google Play submission?

Yes — App Store and Google Play submission is included in all Nascenia mobile projects. We handle developer account setup (or use your existing accounts), app signing, metadata and screenshot optimisation, compliance with Apple and Google review guidelines, and response management during the review process. We also set up crash reporting and analytics so you have visibility from day one of launch.