Block spam calls. By the community, for the community.

When multiple independent users report the same number within a short window, it reaches "confirmed spam" status and is pushed to every device. We require reports from multiple distinct devices across multiple different days to prevent any single person from falsely flagging a legitimate number. Accuracy matters more than speed — we'd rather miss a spam number than block your doctor's office.

Truly free. No ads, no paid tiers, no premium features, no "$1.99 to unlock". We exist to block spam calls, not to sell your attention or data. If you want to support us, there's an optional one-time donation button in the app — but it unlocks nothing and is completely voluntary. The app works identically whether you donate or not.

Contacts: never. The app never requests or reads your contacts list.

Call history: only if you choose to use the "Report from recent calls" feature. Tapping that option prompts for the optional READ_CALL_LOG permission. If you decline, the picker uses the app's own screened-call log instead — the feature still works, just with a smaller history. The permission is never requested in the background.

Not yet. Apple's call blocking works differently from Android's, and we've chosen to build the Android version first because Android's call screening API is more flexible and covers more of the features we need. An iOS version may come later, but it's not currently on the roadmap.

Android routes every incoming call through our call screening service before the phone rings. We check the caller's number against our local database (stored on your device for instant lookup) and decide in milliseconds: allow, silence, or reject. If it's allowed, your phone rings normally. If it's confirmed spam, you get the action you chose in Settings — silence + voicemail, reject, or warn.

The best thing you can do is install the app and report spam calls when you receive them — that's what makes the shared database more valuable for everyone. If you also want to help cover our server and infrastructure costs, there's an optional donation button in the About screen. Donations are completely voluntary and change nothing about the app.

Almost none. The app is mostly idle — it only runs when a call arrives, does a microsecond database lookup, and responds. Background syncs happen once a day to refresh the local blocklist. There's no persistent tracking or polling that would drain your battery.

The Voicemail screen lets you view and play back carrier voicemails inside the app, then label each one as spam or not spam. To unlock it, Android requires the app to be set as the default phone app — this is necessary to gain voicemail read access. Your existing dialer continues to handle all calls; only voicemail access changes.

Note: Samsung devices and some other carriers replace Android's standard voicemail system with a proprietary one that blocks third-party access. On those devices the Voicemail screen is not available, and the app will tell you so clearly.

Each "blocked" notification in the tray has a "Not spam" button. Tapping it sends an unblock signal to our database. When enough unblock reports come in for a number, it's automatically removed from the shared blocklist.