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App Lock trusted by 50M+ users; lock apps & hide photos with fingerprint lock
By Kelvin Ooi
Security and privacy editor
App Lock - Fingerprint Lock is an Android app locker. It covers two jobs: it blocks other people from opening chosen apps, and it keeps private photos and videos out of view in a password-protected gallery. The listing aims it at people whose phone is used by someone else from time to time, such as a partner, a family member or a child.
Its main use is for a phone that is lent out or shared. The developer describes it as a way to keep someone from reading chats or messages, checking email or payment bills, or looking through photos after borrowing the phone.
The build we hold is App Lock - Fingerprint Lock 1.4.5.0 (APKS split bundle) for Android 7.0 and up.
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You choose which apps to lock. The listing names WhatsApp, Messenger, Facebook, Google Play, PayPal and Settings, and says other apps can be added. A locked app asks for the unlock method before it opens, so the chats and payment pages in it stay closed to whoever picks up the phone.
The developer lists two specific cases. One is stopping someone from reading social media chats or email. The other is stopping children from making unauthorised payments or deleting important files, since Settings and Google Play are among the apps that can be locked.
Photos and videos can be hidden inside Gallery Lock, a separate area of the app. The listing says nobody can view the contents without the password. This is intended for media that should not turn up when a phone is handed over, for example when someone is looking at the normal gallery.
Gallery Lock is only part of the app. It sits alongside the app locking features and uses the same unlock methods.
Three unlock methods are listed: PIN, pattern and fingerprint. Using more than one lets the owner choose how to open the app. The fingerprint option depends on the phone having a fingerprint sensor.
Icon camouflage changes the app's icon so it appears as a different app, such as Calculator or Weather. The developer presents this as an extra layer for the locked apps. Someone glancing at the home screen may not realise a locker is installed.