Support

Knock by Performance Marketer

Need help with Knock? We're happy to hear from you.

Common questions

How do I re-record my voice knock?

Open the app, tap the gear icon to open Settings, then choose Re-record Voice Knock.

How do I delete my data?

For a server-linked account, use Settings → Delete account and data, type DELETE, and confirm. This revokes the token and permanently removes linked server data, then clears local data. If the request fails, your account and credentials stay available for retry. A local-only account instead shows Clear this device because it has no server account. Apple and Google subscriptions must be cancelled separately in store settings.

Is my data online?

Mostly no. Your notes, history, and local friends stay on your device. If you link with a friend to exchange real knocks, the knocks you send (including optional voice clips) pass through our server so they can be delivered; their content is purged on delivery. See our Privacy Policy.

The microphone prompt didn't appear / recording doesn't work

Check iOS Settings → Privacy & Security → Microphone and make sure Knock is allowed. Recording is optional — you can always skip it.