Private Lock.

Permissions explained

Private Lock asks for a few sensitive permissions. Here is what each is for, in plain words. The app also explains each one before asking.

PermissionWhyWhat it does not do
Accessibility serviceNotices which app has just opened so the lock screen can appear over the apps you chose.Does not read your screen, text, passwords or messages, and takes no actions for you.
Camera (optional)Takes the intruder selfie after wrong PINs.Photos stay encrypted on your phone and are never uploaded.
Notification access (optional)Replaces a locked app's notification content with "Content hidden".Nothing is stored or sent.
Device admin (optional)Stops Private Lock being uninstalled without your PIN.No other device powers are requested.
NotificationsWarns you if protection stops.
BiometricsLets you use fingerprint or face unlock if you choose it. Android does the check.The app never receives your fingerprint.
InternetAds and checking your "Remove ads" purchase.No account and no servers of ours.

Full detail: privacy policy.