Now that the first smart toothbrushes have already appeared (connected to mobile via Bluetooth), the Startup Quip has released an electric toothbrush which works by subscription. You know it is advisable to change the head of the devices every three months. However, many times, we stretch its life a little more. The proposal of this company is that after buying the initial pack ($ 40 including toothbrush, head, travel case and toothpaste for 3 months), you can subscribe and paying $ 10 every three months, they will send you home a new head and toothpaste. A curious and innovative product to be followed closely.