# Mobile App Development

> Mobile app development services: React Native and Flutter apps with native Swift and Kotlin where needed, engineered for both stores and every release after.

Cross-platform mobile engineering with React Native and Flutter, native Swift and Kotlin where it matters, and a release discipline built for both stores.

## Launch day is the easy part
A mobile app is not a launch; it is a tenancy on two platforms you do not control: store review cycles, OS updates, device fragmentation, and a crash rate the whole market can read in your reviews.

Teams that treat the app as a one-time build discover the real cost after shipping, when every fix waits days for review and every OS release threatens the install base.

## One codebase, native judgment
We build a cross-platform core in React Native or Flutter and drop to Swift or Kotlin exactly where the platform demands it, so one codebase covers both stores without faking native feel.

Every release ships against budgets: startup time, rendering, crash-free rate, and binary size are measured per release, and the pipeline that enforces them is part of the delivery.

## What we build
- **Cross-platform apps**: React Native and Flutter products that ship to iOS and Android from one engineered codebase.
- **Native modules**: Swift and Kotlin components where performance, sensors, or platform APIs demand native code.
- **App infrastructure**: Notifications, deep links, payments, and offline sync designed as product features, not afterthoughts.
- **Release engineering**: Store pipelines, staged rollouts, crash monitoring, and OTA updates that keep the train moving.

## Stack
- **Cross-platform:** React Native, Flutter, Expo
- **Native:** Swift, Kotlin, iOS, Android
- **Release:** CI/CD, Store pipelines, Crash monitoring, OTA updates

## FAQ
**What do your mobile app development services include?**

Cross-platform apps in React Native or Flutter, native Swift and Kotlin modules where needed, app infrastructure like push and payments, and the release pipeline for both stores.

**React Native or Flutter: which do you recommend?**

It depends on the product: existing web/React investment favors React Native; a heavy custom UI with rich animation often favors Flutter. We recommend per project and can argue either choice honestly.

**Do you build fully native apps?**

When the product justifies it, yes. Most products get further faster with a cross-platform core and native modules at the hot spots, which is where we usually start the conversation.

**What happens after the app ships?**

The cadence continues: monitoring, OS-update maintenance, staged rollouts, and feature releases on the same engineering discipline as the initial build.

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Canonical page: https://www.sentientarc.com/capabilities/mobile-app-development