---
title: 'Mobile apps with Kotlin and Swift | Benjamin Sierra'
description: 'Native Android and iOS development focused on stability and experience.'
url: 'https://benjaminsierra.com/en/services/mobile-apps-kotlin-swift'
last_modified: '2026-10-19T01:51:14+00:00'
---

# Mobile apps with Kotlin and Swift | Benjamin Sierra

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Core technology stack

**Service code**
# Mobile apps with Kotlin and Swift

Native Android and iOS development focused on stability and experience.

I build native Android and iOS applications and support the product from functional definition through publication, maintenance, and continued evolution.

- Native Android development with Kotlin.
- Native iOS development with Swift and SwiftUI.
- API connections, authentication, and push notifications.
- Google Play and App Store publication guidance.

- Kotlin
- Swift
- SwiftUI
- REST APIs
- Firebase (optional)