Meet Philips Sonicare for Kids: an app-enabled electric toothbrush with an interactive app that educates and gets your kids more excited about brushing. It keeps track of brushing time and frequency. With 500 strokes per second, this brush is more effective than manual toothbrushes.
KidTimer and KidPacer make sure your children spend enough time cleaning each quadrant of their mouth. It goes easy on teeth and soft tissue. This Bluetooth brush is available for under $40.