Version 1.0 Now Available

CallFilter: Silence the Noise.

A privacy-first, developer-centric call blocker for Android. Local processing, zero tracking, and powerful custom regex rules.

block Blocks Spam
cloud_off 100% Offline
terminal Regex Rules
no_accounts Zero Accounts
visibility_off No Tracking

Pure Minimalist Interface

Designed by developers, for clarity and efficiency.

Main Dashboard

Advanced Rule Editor

Filtered Logs

memory

On-Device Intelligence

CallFilter utilizes Android's native CallScreeningService API. Unlike traditional apps, we don't upload your contact list or logs to the cloud. Every single check happens locally in milliseconds, ensuring your telephony data remains yours.

  • check_circle No remote database lookups
  • check_circle SQLite-based local rule engine
  • check_circle Zero-latency call processing

// Block international spammers

const regex = /^\+?([0-9]{1,3})\d{10}$/;

if (call.number.matches(regex)) {

  screening.rejectCall();

  logger.log("Blocked: Pattern match");

}

Fully Open Source

Transparency is at our core. We believe privacy tools should be auditable. No hidden trackers, no obfuscated code. Join our community on GitHub.

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