Stop Unwanted Calls for Good

Call Blocker is a free spam blocker for Android that automatically stops unwanted calls — robocalls, telemarketers, unknown numbers — before your phone even rings. No subscription, no account, works entirely offline.

Enable the 'Unknown numbers' filter in the app. It will block all calls from numbers not in your contacts or allowed list — completely free, running 24/7 in the background.

Call Blocker intercepts spam calls before your phone rings. Enable the filters for unknown numbers, private numbers, or suspicious calls (STIR/SHAKEN failures). You can also set a custom schedule so filters only run during specific hours.

Yes. Set Call Blocker as your default Caller ID & spam app in Android settings. It will screen every incoming call in real time — all on-device, no cloud lookup, no data shared.

Enable the 'Private numbers' filter in the app. It silences all calls that hide their number. You can run it 24/7 or limit it to specific time slots using the scheduling feature (Pro).

Yes — Call Blocker. Unlike Truecaller, it works fully offline with no account, no contact upload, and no ads. All filtering runs locally on your device, so your data never leaves your phone.

Call Blocker logs every blocked call in your history. You can review which numbers tried to reach you, see the total blocked count, and add specific numbers to your blocklist or allowed list directly from the log.

Open the 'Blocked numbers' section and add any exact number, prefix (e.g. +1800), suffix, or a range of numbers. All matching calls will be automatically rejected. You can import or export your list as a JSON file.

Yes. Add trusted numbers or prefixes to your allowed list. When the unknown numbers filter is on, only your contacts and allowed-list entries will get through — everyone else is blocked.

The free tier includes blocking unknown numbers (all calls except contacts), call history, and basic statistics. Pro adds advanced filters (private, international, suspicious), scheduled blocking by time slot, and the full allowed-list feature.

No. Call Blocker runs entirely on your device. No contacts, no call history, no personal data is sent to any server. Only anonymous crash reports are collected to fix bugs.