Haptic Knock
Haptic Messenger
Free · Designed for iPhone. Not verified for macOS.
Instead of words, a check-in with haptic vibration. Knock several people; talk live with one. iPhone and Apple Watch sense it. Away? A knock waits. No groups, no feed.
Haptic Knock is a 1:1 app for conversations that happen only through haptic vibration — not a chat thread.
Connect with several people separately, and leave a knock as a check-in.
Live conversation is with one person at a time — as clear as a call.
Haptic Knock is for people who lead with rhythm, not words. Couples, long-distance, friends, family. No group chat, no feed. Every connection stays 1:1.
Get started
• Sign in with Apple. There is no password account.
• Pair with a 6-digit code.
• You can pair with several people. Each person has their own knock inbox.
Knock — a check-in for several people
Send “goodnight,” “miss you,” or the default TokTok even when they’re away. A notification waits; opening the app plays the vibration.
LIVE — real time with one person
Turn on a session with that person and taps on the pad go through to their iPhone. Starting LIVE with someone else ends the previous session.
Apple Watch
The Knock watch app is inside the iPhone app. If Automatic App Install is on, it installs with the phone. Alerts use system haptics; saved patterns play after you open them. iPhone and Apple Watch sense the knock.
Patterns
Save short rhythms and send them again later. Leaving a pattern in their library is free. Knock, LIVE, and pattern share stay free.
• Pattern share — free
• No in-app purchase
• They accept it into their library
Honest limits
• Live taps work best with the session on and the app in front.
• A pocket can turn the screen off while the session stays awake.
• We don’t vibrate forever on a fully locked screen.
• When away: notification → open the app → play.
Change your display name or delete your account in Settings.
Contact: dive2ice@me.com
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
This update
• Pattern share — leave a rhythm in their library, free
• Bug fixes
The developer, kim seongjin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- kim seongjin
- Size
- 5.5 MB
- Category
- Social Networking
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
English and 10 more
- English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Thai, Traditional Chinese, Vietnamese
- Age Rating
13+
- 13+
- Contains
Messaging and Chat
- Copyright
- © WooJoo2015