Devlog #4: Appearances and tutorials!

That was a long 4 hours! I spent a lot of time trying to fix any problems with how my app looked, because I realized that it would be a lot more painful to fix them after I finished every single tutorial. I’m planning to ship this project after I finish the multiplication course, and release more courses in later updates. That being said, I still have a lot more work to do! I also added another tutorial and introduced some logic so that my app could make problems that are “easy” and “difficult”.