# v2.2.1 to v3.0.0

## Runtime compatibility

Appfigurate 3.0.0 is backwardly runtime compatible with apps and app extensions linked against Appfigurate library 2.2.1.

Upgrading to Appfigurate 3.0.0 from a previous version converts the database to a new format, therefore downgrading to an earlier version is no longer possible.

[Appfigurate Simulator for iOS](https://docs.electricbolt.co.nz/appfigurate-se-user-guide/setup-ios-simulator-app) is now included in the AppfigurateSE macOS app, and have easy 1 click installation. You no longer have to build the Appfigurate Simulator app in Xcode to deploy.

AppfigurateSE macOS app is now a direct download instead of through the Mac App Store.

## Source compatibility

Appfigurate 3.0.0 is mostly source compatible with 2.2.1. Some minor changes are required:

* The `[APLConfiguration customIdentifier]` method is no longer supported and you should remove any subclass implementations.