# Part 04 miroslav.binas@tuke.sk / [**SMART**](https://kurzy.kpi.fei.tuke.sk/smart)
## Assignment
## Example: Torch App

Turn On
## Application Icon ![Application Icon](../images/torch-icon.png)
## Class Component
## Houston, We Have a Problem!
## Benefits of Expo * Fastest way to build React Native Apps * You don’t need to know Native Mobile coding * No Xcode, No Android Studio * Publish Over The Air (OTA) Updates Instantly * In-built access to Native APIs * It is FREE and Open Source
## Disadvantages of Expo * Not all iOS and Android APIs are available yet
## Understanding the Android Configuration
## `build.gradle` * `compileSdkVersion` * `minSdkVersion` * `targetSdkVersion`
## `AndroidManifest.xml`
[![Apps must target API level 29](https://developer.android.com/images/distribute/play-policies-timeline.svg)](https://developer.android.com/distribute/play-policies ) Notes: * https://developer.android.com/distribute/play-policies
## [www.npmjs.com](https://www.npmjs.com)
## Questions?