Spam Blocker: Call & SMS

Silence the spam. Keep the peace.

Spam Blocker is a blazing-fast, privacy-first call & SMS blocker for Android - with no ads, no tracking, and no nonsense. It works alongside your existing dialer and messaging app, so you never have to switch apps.

PRIVACY FIRST

- No data collection for offline features - ever.

- No ads. No trackers. No cookies.

- 100% open source (MIT licensed).

- Works completely offline if you want it to.

20+ SMART FILTERS

- Regex rules for numbers & message content

- Allow contacts, contact groups & number-prefix ranges

- STIR/SHAKEN caller-ID attestation checks

- Repeated-call detection

- Dialed / answered number allow-listing

- SMS Bomb protection (block OTP floods)

- Meeting Mode: auto-decline during video calls

- Off-Time windows for quiet hours

- Recent-apps awareness (let the pizza place call you back)

- Spam-database matching (e.g. the FTC Do Not Call list)

- Instant online number lookup (optional)

- Crowd-sourced spam reporting (optional)

LIGHTWEIGHT

Set it up, then kill the app - it doesn't need to run in the background. No battery drain, no bloat.

HOW IT WORKS

- Calls: works as a Caller ID app.

- SMS: choose Standalone mode (works with any SMS app) or Screening Provider mode (notifications stay in your SMS app, no SMS permission needed).

Every permission is optional - grant only what you need.

Built with love by Julkarnine Rokey & PiTech (Progressive Information Technology). Based on the excellent open-source SpamBlocker by aj3423.

Website: https://julkarninerokey.github.io/spam-blocker-app/