Haven’t used Mischief in a very long time so cracked it open and doodled a little.
For those interested there are free and paid versions.
The primary difference (although there are others) is that the paid version has layers.
The main benefit to using Mischief? The infinite canvas.
Here’s their site: https://www.madewithmischief.com/
And here’s a Mishief doodle converted and colored in OpenToonz: