The terms under which you use Maude, put simply.
On iPhone, Maude is distributed through the App Store. Its use is governed by Apple's standard licence agreement for apps. We have added no clause to it.
Club Maude is a yearly subscription, billed by Apple on iPhone and by Google on Android. You manage and cancel it in your phone's settings; cancellation takes effect at the end of the current period. Details are in the help page.
What the app uses, who receives it and why: the privacy policy. To erase everything: delete my account.
The legal notice says so.