Tinkercad is a free, kidSAFE-certified app by Autodesk that allows users to create 3D designs, circuits, and codeblocks directly on an iPad or iPhone. Today i used tinkercad to make a 3d design. The shapes i used today was hearts and rectangular prisims to make a keychain. I used the hearts on the side to make a desgin and the rectangular ptrism to use it as a base for the text.