# Appnetic Docs > How Appnetic, the AI mobile app builder, works: previews on your phone, versions, native builds, environment variables and credits. - [Appnetic Docs](https://docs.tryappnetic.com/index.md): Appnetic is an AI mobile app builder that turns a plain-words description into a real Expo / React Native app. - [Getting started](https://docs.tryappnetic.com/getting-started.md): From signing up to your first working app, in five steps. - [Preview on your phone](https://docs.tryappnetic.com/preview-on-your-phone.md): Open your app in Expo Go with a QR code, and watch every edit fast-refresh. - [Versions & rollback](https://docs.tryappnetic.com/versions-and-rollback.md): Every change is a version you can inspect, compare, name and roll back to. - [Native builds](https://docs.tryappnetic.com/native-builds.md): Build an Android APK or an iOS simulator app in the cloud, without a Mac. - [Environment variables](https://docs.tryappnetic.com/environment-variables.md): Give your app its API keys without putting them in the code. - [Credits & plans](https://docs.tryappnetic.com/credits-and-plans.md): What a credit pays for, what each plan includes and costs, and what happens when you run out. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.