OrthoMarbles designed by Dr. Rondeau is a great tool to help you design your own orthodontic appliance. You will be able to customize your appliance easily and have fun while doing it.
It's free of charge to download the installer of Dr. Rondeau, also, you can take a look at users' reviews on Droid Informer. The app runs on Android 4.0 and higher. This application is completely safe to download. Bluethunder is the developer of the tool that can be found in the Health & Fitness category.
Over 10 users downloaded and set up Dr. Rondeau and the most recent release was on Aug 21, 2018. The app has the overall rating 4.6 on Google Play.