# Building On-call: Building a multi-platform on-call mobile app

DevFeed: [Building On-call: Building a multi-platform on-call mobile app](<https://devfeed.tech/articles/building-on-call-building-a-multi-platform-on-call-mobile-app-11708.md>)

Original publisher: [Read original article](<https://incident.io/blog/building-a-multi-platform-on-call-mobile-app>)

Author: Rory Bain

Published: 2024-07-15T15:06:00Z

Content type: article

Language: en

Sources: [The incident.io Blog](<https://devfeed.tech/sources/the-incident-io-blog.md>)

Topics: [incident](<https://devfeed.tech/topics/incident.md>), [multiplatform](<https://devfeed.tech/topics/multiplatform.md>), [Kotlin Multiplatform](<https://devfeed.tech/topics/kotlin-multiplatform.md>), [Flutter](<https://devfeed.tech/topics/flutter.md>), [React](<https://devfeed.tech/topics/react.md>), [Android](<https://devfeed.tech/topics/android.md>), [iOS](<https://devfeed.tech/topics/ios.md>), [Kotlin](<https://devfeed.tech/topics/kotlin.md>), [Dart](<https://devfeed.tech/topics/dart.md>), [Swift](<https://devfeed.tech/topics/swift.md>), [SDKs](<https://devfeed.tech/topics/sdks.md>), [User experience (UX)](<https://devfeed.tech/topics/ux.md>)

Tags: [dart](<https://devfeed.tech/tags/dart.md>), [flutter](<https://devfeed.tech/tags/flutter.md>), [incident](<https://devfeed.tech/tags/incident.md>), [incident-channel](<https://devfeed.tech/tags/incident-channel.md>), [incident-management](<https://devfeed.tech/tags/incident-management.md>), [incident-response](<https://devfeed.tech/tags/incident-response.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [kotlin](<https://devfeed.tech/tags/kotlin.md>), [mobile](<https://devfeed.tech/tags/mobile.md>), [multiplatform](<https://devfeed.tech/tags/multiplatform.md>), [on-call](<https://devfeed.tech/tags/on-call.md>), [outage](<https://devfeed.tech/tags/outage.md>), [platform](<https://devfeed.tech/tags/platform.md>), [post-mortem](<https://devfeed.tech/tags/post-mortem.md>), [react](<https://devfeed.tech/tags/react.md>), [react-native](<https://devfeed.tech/tags/react-native.md>), [slack-incident](<https://devfeed.tech/tags/slack-incident.md>), [ui](<https://devfeed.tech/tags/ui.md>), [ux](<https://devfeed.tech/tags/ux.md>)

## AI overview

The article describes how incident.io evaluated technologies for a greenfield, multi-platform On-call mobile app. It compares native Swift and Kotlin apps with Kotlin Multiplatform, Flutter, and React Native, discussing platform-specific development, shared code, rendering, native UI components, and adherence to OS UI and UX standards.

## Source excerpt

What does it take to build a greenfield mobile app in 2024? When we launched On-call earlier this year, we had to find out.