"My students were asked to write a math story problem and download the free trial of Animation-ish to animate their story! All students whose work is posted signed an agreement to allow me to share their project. The "ToonBoom" logo shows up in their animations because they used the trial version of Animation-ish. If you purchase the software, the logo will not show up in the liscensed version, so you will have a clean background in your animation."