If you use pen and paper to hash out your ideas for an online course or training app, it's time to consider upgrading to POP. It is a simple prototyping tool that you can access on your phone, tablet, or desktop. Take photos of your sketches, or import files from Adobe Cloud or Creative Market, and share them with others.
It's a great way to get feedback on your idea before you commit to actually building it, and you can use it to plan your design flow and do some initial user testing. U