Some of these posture correcting products might give false confidence to people while not understanding the full range of posture related problems. For example, Upright only detects posture through a gyroscope. It will miss subtle muscle tension imbalances. This might cause injury in the long run even when the app tells the users that their postures are correct.To fully detect possible range of posture problems, it’s important to detect subtle difference in muscle strain.
Czaprowski, D., Stoliński, Ł., Tyrakowski, M. et al. Non-structural misalignments of body posture in the sagittal plane. Scoliosis 13, 6 (2018). https://doi.org/10.1186/s13013-018-0151-5