Biometric authentication can make a React Native app feel faster and safer, but it should be designed as a local unlock step, not as a replacement for your account system. The device verifies the enrolled fingerprint or face; your app decides what to unlock after that verification succeeds.

Expo's expo-local-authentication package gives React Native apps access to Face ID, Touch ID, Android Biometric Prompt, and device passcode fallback.

AWS Amplify is a framework that lets you develop a web or mobile application quickly, by accessing the backend cloud services offered by AWS. In this article, we are going to learn how to use AWS Amplify in React Native by building a fully functional login and registration flow. This tutorial is going to take a look at one of the most important features of a mobile application – the authentication. You know the scenario. You need to store some amount of user information (credentials) for them to get back and re-use the application rather than creating a new account. Please make sure to have an AWS account before you begin this tutorial. If you don’t, please sign up for one.

Video compression is one of the easiest ways to reduce upload time, storage cost, and feed latency in a React Native app. It matters for social networks, chat apps, marketplace listings, short video apps, fitness apps, and any product that lets users upload media from the camera roll.

Firebase Storage is commonly used in React Native apps for profile photos, posts, chat attachments, marketplace listings, restaurant images, and short videos. The upload code is simple, but production readiness depends on rules, file paths, billing, metadata, and cleanup.

In today’s article we will build a React Native Music Player, to showcase how easy it is to build a music app in React Native, that is optimized for both native iOS and Android. The project we are going to build will look and behave similar to the Spotify player, that all of us are familiar with. The main goal is to have a basic app with two screens: one with a list of predefined songs and another one with the actual music player.

In React Native WebViews enable access to any web portal in the mobile app itself. In other words, a web view allows us to open the web URLs inside the app interface. While React Native provides us with a built-it web view component, but we are going to use react-native-webview plugin in this tutorial, since it is more powerful. React Native WebView is a modern, well-supported, and cross-platform WebView for React Native.

Maps are a core part of many React Native apps: taxi booking, food delivery, real estate listings, store locators, local marketplaces, travel apps, fitness tracking, and social discovery all need some form of map display.

React Native tooling has changed. Older lists often recommended Flipper, Nuclide, standalone React Native Debugger, or remote Chrome debugging as the default workflow. Modern React Native apps should start with React Native DevTools, Metro, and the native tools that ship with Xcode and Android Studio.

The Async Storage is a simple key-value pair based storage system in React Native. It is used for scenarios where you want to save the user’s data on the device itself instead of using any cloud service, such as building offline apps. According to the React Native’s official documentation:

On iOS, AsyncStorage is backed by native code that stores small values in a serialized dictionary and larger values in separate files. On Android, AsyncStorage will use either RocksDB or SQLite based on what is available.

In this tutorial, we are taking a look at how to detect and support dark mode in React Native apps. You are going to build a small demo app that sets its appearance based on the platform OS. The platform OS will have two theme modes, dark or light. By default, when the app will start, it is going to have the theme based on the platform OS but the user is going have an option to toggle between the themes.