Catchbook Drawing gives you unparalleled precision and accuracy in an easy-to-use interface you can take with you anywhere! As you sketch, your freehand ink is converted into mathematical curves you can push, pull, and snap to other geometry. Drawing also provides automatic dimensions that you can place and edit easily.
Catchbook Drawing is now a one-time purchase, and starting today, you can get it for $0.99 on Android and free on iOS and Windows. One-time purchase does not expire, so once you have it, it’s yours forever.
You will still have to go through a purchase sequence in the store on iOS and Windows, however, you will not be charged. See below for what that looks like.