Block precisely
Private callers, non-contacts, countries, and specific numbers.
Call control for Android
Control who gets through.
Private, local-first call filtering for Android.
Block private callers, numbers outside your contacts, and calls you don't want — with clear rules you control.
App screenshot — home screen
Blocking every unknown caller is easy. Missing an important one isn't.
Delivery drivers, clinics, employers, technicians, and other legitimate callers often use numbers that aren't saved in your contacts. A filter that blocks everything unfamiliar can block them too.
LineLayer gives you explicit control instead of pretending every unknown number can automatically be identified. You decide the rules — and you can always see why a call was allowed or blocked.
Know what happened
See why a call was allowed or blocked.
Keep filtering local
Call filtering is designed around local processing rather than depending on a massive caller-ID database.
App screenshot — Expected Call Mode
Expecting an important call?
Turn on Expected Call Mode to temporarily relax your relevant filtering rules while you're waiting for a legitimate call from a number you don't recognize — like a callback from a clinic or a delivery driver on their way.
Once it's off, your normal rules apply again.
How it works
- 1
Call arrives
- 2
LineLayer checks your rules
- 3
Allow or block
- 4
Reason appears in your history
Your phone number is personal. Your contacts are too.
LineLayer is built around a local-first philosophy: call filtering decisions are designed to happen on your device, using rules you set, rather than relying on a large shared database of phone numbers.
Read about LineLayer privacy