Here is a smart set of resistance bands that combines with your smartphone to take your workouts to the next level. The WeGym App Connected Resistance Bands record and analyze your motion data as you exercise to give you real-time feedback.
These resistance bands come with 2-non-slip handles, 2 wrist straps, 2 ankle straps, and a door anchor. They have a smart sensor and convenient adjuster. You can find out more about it here.