App configuration is stored in json format
You can use AppDeck Cloud Services to configure your app. We offer an easy to use configuration page and an online code editor.
You can also host this file yourself; if you do so, update AppDeck project files:
Json is embedded in your app during compilation. This way it can work offline. To update json configuration you have to release a new version of your app.
Warning: When app update, AppDeck will clean up app cache.
Here is a complete app.json example: