Call Blocker
Incoming calls from numbers that are not in your contacts are rejected. Nothing else.
Download the APK
Source on GitHub
What it does
- Rejects incoming calls from numbers not saved in your contacts.
- Withheld and private numbers are blocked too — there is no number to match.
- Optionally silences instead of rejecting, so callers reach voicemail normally.
- Keeps a local list of recently blocked calls so you can see what you missed.
Why it is lightweight
The app has zero third-party dependencies and uses Android's own
CallScreeningService — no analytics, no ad SDKs, nothing running in the
background between calls.
Requires Android 10 or newer. Older versions only let the default phone
app screen calls. Android also permits one call-screening app at a time, so enabling
this replaces your current one.
Privacy
It collects nothing and has no internet permission at all. See the
privacy policy.