Description

Knock. The ultimate nonverbal communication.

Knock is the most primitive, but innovative way of communication.
Once you tap your friend’s door, your friend will notice you.
You don’t have to think what to write or say. You don’t even need a letter to communicate with your friend.

The only two features:
Knock – Send a notice to your friend. Knock back to your friend.
Search – Find your friend with a user name.

We always welcome your wish.
Tell us anytime what you want for, or what you think of this app.

What's New in Version 1.1.0

This app has been updated by Apple to use the latest Apple signing certificate.

Made a minor change
- Adjusted push notification permission timing
- Deleted the spinner on the home screen and make it lighter
- Added vibration when receiving Knock on home screen

Enjoy it and please review us!