Support

Email support@nixblocker.app. In the app, Settings › Diagnostics lets you attach a short report with versions, dates and counts. It contains no phone numbers, words or message text.

Turn on call blocking

Open Settings › Apps › Phone › Call Blocking & Identification and turn on Nix. The Protection tab in Nix shows whether iOS reports it as on.

Turn on text filtering

Open Settings › Apps › Messages. On iOS 26 and later, turn on Screen Unknown Senders, then choose Nix under Text Message Filter. On earlier versions, open Unknown & Spam and choose Nix under Text Message Filtering. iOS doesn't tell apps whether a filter is on, so Nix can't confirm it for you.

What Nix can't do

iOS doesn't tell apps which calls were blocked or which texts were filtered, so Nix shows no counts or logs. No list stops every spam call: new and spoofed numbers can still get through. Calls from your contacts are never blocked, and iMessages are never filtered.

A call you wanted was blocked

Add the number to Lists › Allowed numbers. It takes effect as soon as iOS reloads the list.

Your number is on the spam list by mistake

The list is built from public complaint data and can be wrong, for example when a scammer fakes someone else's number. Email the number to support@nixblocker.app and we will review it and remove it if it doesn't belong there.

Subscription

Full Access is an auto-renewing subscription bought through the App Store. Manage or cancel it in Settings › your name › Subscriptions on your iPhone. Refunds are handled by Apple at reportaproblem.apple.com.