# SpamBlocker (Call & SMS) (open-source messaging app)

> SpamBlocker (Call & SMS) is a free, open-source messaging app for Android. Spam Call/SMS blocker. It has 1,888 GitHub stars and is released under the MIT license, and you can install it from F-Droid.

It blocks unwanted calls & SMS messages without replacing your default call/SMS app. Filters: - Contacts - Contact Group - Contact Prefix - STIR/SHAKEN - Repeated Calls - Dialed Number - Answered Number - Emergency - Push Alert - SMS Alert - SMS Bomb - Recent Apps - Meeting Mode - Off Time - Spam Database - Local AI - Schedule & Calendar - Geolocation & Carrier - Instant Query - Report Spam - Regex - and more... Details:

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/aj3423/SpamBlocker |
| Platforms | Android |
| Built with | Kotlin |
| GitHub stars | 1,888 |
| License | MIT (open source) |
| F-Droid | https://f-droid.org/packages/spam.blocker/ (package spam.blocker) |
| F-Droid anti-features | none flagged |
| Google Play | not linked |
| App Store | not linked |
| Website | none listed |
| Official | no |
| Category | Messaging & chat |
| Latest release | v5.18 (Oct 1, 2026) |
| Last commit | Oct 3, 2026 |

F-Droid builds its apps from source and flags anti-features: https://f-droid.org/en/docs/Anti-Features/

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