Ive used this app for years, just the free version. But, when I read that its ONE GUY who is responsible for this amazing app, I decided to upgrade to Pro, and I also got the package that has SIX apps included in it, all of which are the Pro versions. I use this app to remove backgrounds from pictures, to clean up scanned notes that my professors email us (they lay a book on a scanner to scan each page of an article, and it scans half of the adjacent page, and 3/4 of the page is the empty part of the scanner). I also use it to add text to pictures before I share them, such as the place and date that it was taken. It also allows me to take notes – best results are with a stylus – on a blank page, and save them as PDFs with a different app. This is a very useful app, and Ive never had any bugs while using it.
Sippigrrrl about You Doodle Pro - art on the go