The official app & game
Distributed by ApkOnline
iPhone app SittingPostureCHECKER - plus download it using ApkOnline.
Would you like to check your posture ?
If the line connecting the ear, shoulder, chest and hip is straight, your posture is generally said to be quite good.
Step1. Prepare a photo taken from the side of a subject sitting in a chair.
Step2. Move the red marks to the positions shown below.