Support
Knock by Performance Marketer
Need help with Knock? We're happy to hear from you.
Email us: eric@performancemarketer.com
Include your device model, iOS version, and a short description of what happened. We aim to reply within a few business days.
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?
Settings → Delete My Data. This permanently erases everything the app has stored on your device. Deleting the app itself does the same.
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.