For Appery.io API v1.0 (corresponds to Cordova 2.4.0) minimal Android version is Android 2.1 - API level 7. Read more here: http://docs.phonegap.com/en/2.4.0/gui...
For Appery.io API v1.1 (corresponds to Cordova 2.9.0) the minimal version is Android 2.2. See here http://docs.phonegap.com/en/2.9.0/gui...
But this is only the minimum levels of supported API for work with the device. It does not guarantee that the application will run in the same way on Android 2.2 and Android 4.3. Since application written using Cordova is performed on the native browser, it is important to consider what this specific version browser is able to perform. Here you can find detailed tables on the supported functionality as CSS and JS: http://caniuse.com/