Design Wave
Write a message, pick a design, and wave your phone to paint it in the air.
The full user manual is on its way. In the meantime, here's the short version: compose a message, optionally apply one design from each of four categories — Animation, Shading, Effects, and Background — configure it in the settings panel, then wave your phone overhead to paint it in the air. An interactive tutorial with live scoring walks you through the motion the first time you use the app.