Monhanzii works WITHOUT an account. You can study all of the content offline without signing up for anything.
An account has exactly one purpose: syncing study progress between devices. Without one, progress is still saved — it just stays on that device.
If you create an account, the server stores your email address and your study progress — review cards, quiz results and personal settings. Nothing else.
That data sits on a server I run myself at api.monstudio.me. There is no third-party analytics inside the app.
I do NOT sell your data to anyone, and there is NO tracking advertising in the app.
Dictionary content in the app is used under the CC BY-SA licence. Attribution is in the app's About screen.
You can delete everything held on the server at any time by deleting your account from inside the app.