This device operates by push of a button and follows the subject infant of it. no app is required and does not have to be connected to internet. It holds charge for 7 hours. 

it is compatible with smartphones up to 3.5" width and comes with a GoPro (action camera) mount. 

included in box: 

- Auto subject tracking device

- Fixed mount 

- USB A to USB C cable

- GoPro mount