On-device call intelligence

Take back your ring­tone.

Call Guardian screens, silences, and challenges unwanted calls in real time — without shipping a single number to the cloud.

Explore features How it works
  • 100% on-device — no cloud, no tracking.
  • Works with your existing dialer.
  • 10 languages, adapts to your locale.
20+
smart features
10
languages
0
servers touched
Android 9+
compatible
Features

Every filter you'd expect on a factory phone — and then some.

Each row shows which protection mode(s) actually run the feature.

Protection modes

Three levels. Pick one, or let Guardian pick.

Restricted

Only your contacts get through. Everyone else is filtered.

Default

Standard

Contacts + allowed regions ring normally. Foreign & hidden numbers are screened.

Exposed

No filtering. Only your explicit rules apply (VIP, temp blocks, per-contact rules).

Work Schedule, Night Shift, Relax Mode, and Meeting Shield can auto-lift the current mode to Restricted at the right moments.

How it works

From install to first blocked call, in under a minute.

  1. 01

    Guided permissions

    A single onboarding screen walks you through every permission the app touches. Skip anything you don't need — the feature that requires it will re-prompt you later.

  2. 02

    Set your rules

    Pick a mode, add allowed regions, mark VIPs, add per-contact overrides, or leave defaults — Guardian ships sane and gets stricter as you tweak.

  3. 03

    Let it decide

    Every incoming call runs the pipeline: user-explicit rules first, then mode-level screening, then Gatekeeper for unknown callers.

  4. 04

    Escape when you need to

    Trigger a Ghost Call by shaking the phone, from the widget, or on a schedule. Ambient noise + fake voice sell the illusion.

FAQ

Answers to the questions that come up first.

On-device. Full stop.

No numbers leave your phone. No accounts, no analytics, no shadow profile. The call-screening decision is made by the app that runs on your device, using the rules you set. Backups export locally to a file you control.

Zero telemetry No account required Local backups Open architecture