The Conventions app does not collect any personally identifiable information.
Your personal favourites (callers, cuers, round dances) are only held on your device.
The only information collected from your device is the platform (android or iOS), operating system version, processor, machine name, screen size, the app version you have installed, and a crash log if there is one.
This information will be used to assist in identifying and resolving issues with the app and is not shared with any third parties.