Knobble: Draw with Friends
One line, drawn together
About
This app lets you draw a single, unbroken line with a friend inside your messages. Watch your creations animate and pass the pen back and forth to collaboratively build doodles. It offers a daily tracing challenge and is designed for group chats.
What's New in Knobble
1.0
May 28, 2026
In-App Purchases
$1.99
Knobble Plus
Trace photos, every color, premium pens.
Developer apps
FAQ
What is Knobble?
Knobble is a drawing toy that lives in your Messages. It allows you to draw one unbroken line with a friend, passing it back and forth within iMessage. The app is designed for collaborative doodling and offers a daily tracing challenge.
How does Knobble work?
You draw a single line using two knobs or your finger. This line is sent to a friend within iMessage, where they can watch it draw itself and then continue the line from where you left off. Each person adds their turn in a new color, creating a continuous drawing.
Does Knobble have ads?
No, Knobble does not have ads. The core drawing and sharing functionality is free and ad-free. There is an optional one-time purchase for additional features.
What are the Knobble Plus features?
Knobble Plus is a one-time purchase that unlocks tracing your own photos, choosing your device color, and accessing a premium pen palette with more colors. These features enhance the drawing experience but are not required for core functionality.
Is Knobble free to use?
Yes, the core features of Knobble, including drawing, sending, watching animations, and participating in the daily challenge, are completely free. An optional one-time purchase is available for advanced features.
What devices does Knobble support?
Knobble is available on iPhone and iPad, supporting iOS devices. The app is integrated directly into the Messages app.
How often is Knobble updated?
Knobble was last updated on May 28, 2026, with version 1.0. As a new release, future updates will likely focus on adding new features and improving stability based on user feedback.
Is Knobble suitable for all ages?
Knobble has an age rating of 4+, making it suitable for children and adults. Its simple mechanics and collaborative nature are designed for broad appeal.