What is Doodleback?
A lot of drawing apps let you construct a circle but usually in only one way. They let you copy an object but in only one way or erase but in only one way. But what if you wanted to erase with a star or copy something by rotation? Doodleback’s philosophy is that how you’re able to construct things is almost as important as what you can construct. Being able to precisely place objects at the moment of their creation simplifies many drawings that would otherwise be difficult or almost impossible. You can get it here on Google Play.
Null Measurement
The Null Measurement functions exactly as the Measurement tool except that the Measurements created are immediately removed as soon as you lift your finger. You might want to do this if you want to measure things on your model without actually altering the model. Like the Measurement tool, you’ll need to define a Reference Length first. Here’s an example: