No advertising
No advertising tracking tool is integrated into the app.
Smart call blocking
WATCHTOWER, private call blocking for Android
WATCHTOWER is an Android app that filters and blocks unwanted calls directly on your phone, with no account, no ads, and no internet connection required for filtering.
No collection
WATCHTOWER does not sell, share, or store personal data.
Local processing
Core features are designed to run on your device when the system allows it.
ACTIVE PROTECTION
Enjoy fewer interruptions without missing important calls
Once enabled, WATCHTOWER quietly screens your calls and rejects unwanted ones before your phone even rings. Official French telemarketing prefixes regulated by ARCEP, including 01 62, 01 63, 02 70, and 02 71, are already covered, and you stay in control with your own rules for numbers, prefixes, countries, or geographic regions.
Allowed numbers always take priority. With no ads, no account, no remote server, and no internet connection required for filtering, protection runs directly on your phone and your data never leaves it.
To understand what a shared database really adds, read our analysis of community anti-spam databases.
WATCHTOWER V5 is available on Google Play
Download the latest version of WATCHTOWER now and benefit from the latest improvements in protection against unwanted calls.
Get upcoming improvements early
Join the testing programme and receive upcoming improvements before their public release. Be among the first to try new protections, help refine them and contribute directly to the development of WATCHTOWER.
Once your request has been approved, you will receive the link required to join the testing programme on Google Play.