A lock on NexGuard, and a route to Android’s own
App Lock does two things, and is straight with you about both. It puts your fingerprint, face or device PIN in front of NexGuard itself — your vault, your authenticator codes, your security posture. And for your other apps, it finds the protection your version of Android actually provides and takes you to it, rather than faking one through a service that reads every screen.
Illustrative preview — a look at the interface.
The problem
Your phone lock protects the whole device — but once it’s open, every app is open. Hand your phone over to show a photo and your messages, banking and files are one tap away. The moment you most want a second boundary is the moment there isn’t one.
How it works
Most app lockers get that boundary by running an accessibility service that watches every screen you open. Google Play explicitly does not count security apps as a valid use of that API, and Android is revoking it from apps that already hold it. So NexGuard locks what is genuinely ours to lock, and for everything else points you at the facility your device really has — which keeps working when the overlay approach stops.
How it works
App Lock, step by step
Turn on the lock
One switch in the app. It uses the biometric or PIN your phone already trusts — NexGuard never holds a password of its own.
Choose how soon
Lock immediately, after a minute, or after five. A short grace period means switching apps and back doesn’t prompt every time.
See what your device offers
NexGuard checks for Private Space, screen pinning and per-app settings on this device, and says plainly when one isn’t there.
Open it in one tap
Where a protection exists, NexGuard takes you straight to the right settings screen instead of leaving you to find it.
What you’ll get
Built the NexGuard way
NexGuard locks itself
Your vault, authenticator codes and security posture sit behind a fresh unlock — including switching the lock back off.
Your device’s own authentication
Biometric or device PIN, nothing new to remember and no extra secret for us to hold.
Honest about the rest
For other apps it finds the real facility on your device and opens it — and tells you when there isn’t one.
Privacy first
Designed to protect, never to snoop
App Lock is a gate, not a tracker. It cannot read other apps, cannot see what you open, and runs nothing in the background. Its settings never leave your phone — whether this device re-prompts for a fingerprint is a property of the device, not of your account, so there is no reason to send it anywhere.
How NexGuard protects your dataQuestions
App Lock, explained
Can NexGuard lock my messaging or banking app?
What is Private Space?
What happens when I hand someone my phone?
Does it store a separate password?
Which plans include App Lock?
Get early access
Get App Lock with NexGuard
App Lock is part of NexGuard — start on the Free plan with no card, and upgrade only if you want higher limits and the advanced engines.