Android Call/SMS blocker. (Android 10+)
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| Call | SMS | Setting | Notification |
|---|---|---|---|
- ✅ For people who are more inclined to reject unknown calls
- For those who need to answer unknown calls, for example, salesmen or lawyers, etc:
- ✅ If your carrier supports STIR attestation and it works well for you
- ❌ Otherwise, consider other blockers that rely on spam database
It works without replacing your default Call/SMS app.
- For call:
It's the Caller ID app - For SMS:
It takes over the SMS notification, it only filters the notifications, the spam messages will still be present in the SMS app.💡 Please turn off the notification permission of the default SMS app in system settings, otherwise there will be double SMS notifications.
| Filter | It checks |
|---|---|
| Contacts | Whether from a contact |
| STIR | STIR attestation |
| Repeated | Whether the number has been calling repeatedly |
| Dialed | Whether the number has been dialed |
| Recent Apps | If some specific apps have been used recently, all calls are allowed. Use case: You ordered Pizza online and soon they call you to refund. |
| Off Time | A time period that always permits calls, usually no spams at night. |
| Regex Pattern | Some typical patterns: - Any number: .* (the regex .* is equivalent to the wildcard * in many other apps) - Exact number: 12345 - Starts with 400: 400.* - Ends with 123: .*123 - Shorter than 5: .{0,4} - Longer than 10: .{11,} - Unknown number (it's empty string): .{0} or ^$- Contains "verification": .*verification.* - Contains any of the words: .*(police|hospital|verification).* - Starts with 400, with leading country code 11 or not: (?:11)?400.* - Extract verification code from SMS message: code.*?(\d+)Ask AI to generate or explain a regex: "Show me regex for checking if a string starts with 400 or 200" Results in (400|200).* |
| Permission (all optional) | Why |
|---|---|
| ANSWER_PHONE_CALLS | Reject, Answer and Hang-up calls |
| POST_NOTIFICATIONS | Show notifications |
| READ_CONTACTS | For matching contacts |
| RECEIVE_SMS | For receiving new messages |
| READ_CALL_LOG READ_SMS |
For feature: Repeated Call/Dialed (check if it's repeated) |
| PACKAGE_USAGE_STATS | For feature: Recent Apps For checking whether an app has been used recently |
| READ_PHONE_STATE | For block mode: Answer + Hang-up (monitor ringing state) |
No data collection
- No internet access, works completely offline.
- No external storage access, only accessable to scoped storage(the Downloads folder).
- No communication with other app
- Most problems have already been discussed in the issue list, please search first.
- There's also a matrix channel
- Google shows security warning when installing this app
- SMS notification doesn't work after app is killed
- How to always block particular number regardless of how many times it repeats, or within OffTime, etc...
- Integrate spam database
- Android 9- support
- Dual SIM support
Languages are translated using Gemini AI(golang script), fire an issue for requesting a new language support.
