Nottz App is a simple note-taking and memo app built to describe the use of Modern Android development tools. All your data stay with you – no storing to the cloud, no permissions required.

Anti-Features:
ApplicationDebuggable: APK files of this application are compiled for debugging („application-debuggable“). For details, see e.g. What are the security implications of using an app built “for debug”.
NonFreeComp (the application includes non-free components):
⇒ The app contains libraries of Go