This thing has also come in handy while dinning out! Yes, I'm that mom all you super moms like to hate that will hand over electronics to avoid tantrums in public places..... No shame since it's a win win for everyone at the table ;-) My princess usually has an hour limit when it comes to such activities, so if service is slow... I keep this handy lil'crayon in my purse & hand it over to the princess when she starts to get antsy & she's occupied until it's time to leave.
The crayon is also compatible between apple & android products so no need to buy multiple crayons for multiple devices!
Just open the app, click start, pick a coloring book and then a picture & color away!