The article
Someone told you the app has to be native: an investor, a developer you trust, or a competitor's app that feels faster. Sometimes they are right. But native app development services cost more, because each platform gets its own app, so before you pay for two codebases, check that your app needs what only native gives.
Since 2017 my company, 26 Lines of Code, has delivered 150+ projects with a team of 70+ specialists, and we build apps both ways. After 18 years in software development, my view is simple: most business apps do well with one shared codebase, and native earns its extra cost when the app depends on the phone itself. Below: the five signs that it does, what you pay for twice, where React Native fits, how we build two native apps and what we shipped.
Native app development services: the short version
| Question | With us |
|---|---|
| Languages | Swift for iOS; Kotlin with Jetpack Compose for Android |
| Each platform gets | Its own codebase and its own mobile developers |
| Both apps share | The backend, the API and the admin panel |
| When native pays off | Graphics under load; the camera, Bluetooth or sensors at the core; long background work; the newest system features; home screen widgets |
| Price | A mobile app starts at $5,000 for a first version; native for both platforms builds each feature twice, and your free estimate shows what that adds |
| Releases | The App Store and Google Play, then every update |
When native mobile app development pays off
Native earns its extra cost when the app depends on one of these five things:
- Graphics and animation that must stay smooth under load.
- The camera, Bluetooth or sensors at the core of the app.
- Long work in the background: tracking, syncing, audio.
- New iOS and Android features on the day they ship, without waiting for a framework to catch up.
- Home screen widgets and other close ties to the system.
A quick test: take your feature list and mark every feature that touches the phone itself rather than the screen. If the marks fall on the features your users pay for, go native. If they fall on extras, one shared codebase will do, with those few features written in Swift or Kotlin; that is our hybrid app development. Ordering, booking, marketplaces, content and internal business apps rarely need native at all.
Two native apps: what you pay for twice
Going native for iPhone and Android doubles some of the work, not all of it. Forward this table to whoever owns the budget.
| Part of the product | Two native apps | One shared codebase |
|---|---|---|
| Screens and app logic | Built twice: in Swift and in Kotlin | Built once |
| Design | One design, adapted to each platform | One design |
| Backend, API and admin panel | Built once, shared by both apps | Built once |
| Testing before a release | Two apps to check | One codebase, checked on both platforms |
| Store release | App Store and Google Play review | The same two reviews |
| New iOS or Android features | Usable as soon as the platform ships them | Wait for the framework, or need native code |
| Updates for new system versions | Two codebases to keep current | One codebase, plus plugins that must follow both systems |
The backend and the admin panel are built once either way, so native doubles the app, not the whole product. The two apps stay separate after launch as well, which is why the last row matters as much as the first.
Start with one platform
You do not have to build both at once. Native apps are separate, so the iOS or the Android app can launch first and the other can follow on the same backend. For one platform, the doubling in the table goes away.
Your own numbers decide which comes first. Look at the iPhone and Android split in your analytics or your customer list, launch where most of your users are, and build the second app once the first has met real users and the backend works.
React Native is not native, and that is fine
React Native draws native interface elements, but the app is one codebase shared by iOS and Android, so we treat it as a cross-platform choice. If you were searching for React Native mobile app development services, you want one app for two stores, and we build that on the hybrid side, next to Flutter.
The names confuse people. A React Native mobile app development company builds one app that runs on both platforms. A native mobile app development company builds two apps, one per platform, each in that platform's own language. We do both, and the first call is where your feature list decides which one fits.
What our native mobile app development services include
- The decision first: you list the features, and we tell you which approach fits them before any contract.
- iOS in Swift, released through the App Store; more on iOS app development.
- Android in Kotlin with Jetpack Compose, released on Google Play; more on Android app development.
- One backend for both apps: the API, the database and the admin panel, on Django or FastAPI with PostgreSQL, and sign-in through Auth0.
- Releases through store review, then support and every update after launch.
Two codebases, one way of working
Both apps go through the same five steps, so they do not drift apart:
- Documentation first. Requirements and screens are written down before the code, for both apps.
- Small tasks. The work is split into small planned tasks, each with its own definition of done.
- Built with AI tools. Each task is built with AI tools and checked against that definition.
- Code review. An engineer reviews the Swift and Kotlin code of every task.
- Final QA. Our tester checks the iOS and Android apps before each release.
A person works in a pair with AI on every task: AI takes the routine, and the decisions about how the app is built stay with people. We do not train AI on our clients' code. Before the stores, the builds reach your phone: on iPhone through TestFlight, on Android as a build to try every two weeks. More on where AI actually speeds up a build.
Swift and Kotlin in our portfolio
- SaneBox: an AI email assistant on Android. SaneBox sorts email with AI, and we designed and built its Android app in Kotlin and Jetpack Compose. Users clear the digest of unimportant mail, train a sender to a folder with one tap and connect Gmail, Outlook, iCloud, Yahoo, AOL or any other mailbox; push notifications through Firebase Cloud Messaging bring them back when something needs them. The hard part was a service that keeps changing: the app's API client is generated from SaneBox's own OpenAPI description, so the app follows the backend as it changes. The app is live on Google Play.
- Raina Music: a phone that runs the music of a hotel or a restaurant. Raina streams DJ-curated music to hospitality venues, and a manager changes the music in each zone from a phone. We reworked the streaming backend to serve many venues at once, built a smart mix that blends one song into the next and connected the players to the backend over a two-way WebSocket, so the music boxes, the app and the backend answer each other in real time. The hard part: playback had to stay smooth as venues and listeners were added.
Ask which language before you sign
In October 2026 I read five native app development pages from the top of Google for this search. One never says which language its apps are written in. Another names Kotlin for Android, no language for iPhone apps, and lists React Native, Flutter and Ionic, all three cross-platform, as the tools it uses. Five pages are a small sample; still, ask any native app development company which language each app will be written in. The answer should be Swift for iOS and Kotlin for Android, or a clear reason why not.
What you own, and where to start
Both codebases are yours once they are paid for: whoever pays owns the code. Keep the Apple and Google developer accounts in your company's name too; the article on mobile app maintenance explains what to check.
List the features your app needs, and we tell you which approach fits them before any contract: two native apps, one shared codebase, or one platform first. Everything else we build for phones is under mobile app development.
