StraightBack 1.2 [free]

This App adds a small icon on the top of the device, a sad icon means you should straighten your back to a more ergonomic posture, a happy icon indicates that the device is in a good angle. Using a better posture may help relieve neck, back and chest pains. The measurements are taken only when the screen is ON (and after a pre-set period of time), vibration can be added in order to remind the user to change their posture.

• 09/27/2022: StraightBack 1.2
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