Turn your phone into a scoliometer. Measure the Angle of Trunk Rotation at home, keep a posture photo timeline, track height and weight, and bring a clear record of the months between appointments to your next clinic visit.
iPhone and Android — US$14.99, one-time purchase. No subscription. No ads. Store price may vary by country.
Smartphone scoliometer apps have been compared against the clinical scoliometer in peer-reviewed studies, agreeing to within about 0.4 degrees with reliability (ICC) above 0.90, and parents produced readings close to a specialist’s after brief instruction. ScolioTrack uses that same ATR measurement method. The app itself has not been tested in a product-specific clinical trial. See the research, including its limits.
It does not diagnose scoliosis, it does not measure the Cobb angle from an X-ray, and it does not replace radiographs or a clinical assessment. It records trunk rotation and posture over time so that you and your clinician can see whether a curve looks stable or is changing.
How often should I measure?
Children and teenagers in a growth spurt: about twice a month. Adults: about once a month.
What reading should I act on?
An ATR of roughly 7 degrees is a widely used referral threshold, and a reading that keeps rising at any level is a reason to seek review. Speak to a health professional if you are unsure.
Is it a subscription?
No. ScolioTrack is a single purchase at US$14.99 with no ads and no recurring fee.
Does it work on both platforms?
Yes, on iPhone and on Android.