Caller Screen - Spam Blocker

Caller Screen — Know who's calling before you answer

Caller Screen identifies and blocks unwanted calls. Before you answer, it shows you the caller's location, carrier, and any labels attached to the number (such as "Telemarketer", "Ad", or "Possible spam"), helping you decide in an instant whether to pick up. You can also set your own rules so numbers you never want to hear from are blocked automatically.


Caller identification & spam alerts

See the caller's location, carrier, and number labels clearly before answering. Works with offline carrier segment data so common numbers can still be recognized without a network connection. Caller information is also available for numbers you dial, so you know who you're reaching out to as well.


Floating overlay, without leaving your screen

Caller info appears in a floating card on top of any app, so you never have to switch screens to see who's calling. Quick actions let you allow, block, or dismiss the card, and it can close itself automatically after a few seconds so it never gets in the way.


Custom blocking rules — your calls, your way

- Whitelist and blacklist are managed separately: numbers matching an allow rule always get through, and blocked numbers are filtered automatically.
- Flexible rule templates: exact numbers, number-contains, or matching by location, carrier, or number label.
- Rules can be limited to specific time windows, e.g. blocked during work hours, allowed outside them.
- A silent block strategy that filters a call without ever ringing.
- A repeat-call window that lets the same number through again within a set time, avoiding false positives.
- Allow rules take priority over built-in blocking, so important contacts always reach you.


Your own number library

Recognized and manually added numbers are stored in a local library you can search, edit, and delete. Add a single number by sharing it from your contacts, or import your whole list in bulk via CSV or vCard. Rules and the library can be exported, making device migration painless.


Spam & fraud protection

Spot and warn about premium-rate numbers, and easily filter foreign calls based on the region your device is in. Combined with your whitelist and blacklist, it gives you a complete shield against telemarketers, ads, and scams.


Personalization

Choose between light and dark themes and pick from several accent palettes so the app feels like yours.


Privacy & security

Your number library, call history, and rules are stored on your device only — no account, no sign-in, and identification happens entirely on-device. The app uses Google Play's integrity verification to ensure you are running the genuine, official build with full access to every feature.


Purchase information

Caller Screen is a one-time purchase. Pay once and unlock everything: no in-app purchases, no subscriptions, and no ads.


Getting started

After the first install, follow the guided setup to grant the "Call screening" role and the overlay permission, and you're ready to go. Requires Android 10 (API 29) or higher.