Thunkable is a free service for designing, testing, and publishing your own apps! You have the opportunity to create an app and be the next great app inventor like George Burgess who developed Gojimo. With Thunkable you can create your apps even if you don’t know how to write code. This is possible because Thunkable shows you jigsaw-like pieces that have commands labeled on them. Your job is to put the pieces together to make your apps work.
Read the tutorials and/or watch the video tutorials. There’s a playlist of tutorials so you can start at the beginners and go as far as you like. Good luck becoming the next great app inventor.