Goniometer Pro funktioniert nicht

G-pro has been designed in collaboration with health care providers (HCP) in an effort to develop an easy to use and reliable ROM measuring tool, a better goniometer app.  G-pro can provide easy and accurate range of motion (ROM) readings.  In preview mode, G-pro will be fully functional for 10 ROM readings.  Use G-pro for x-ray measurements (e. g. to determine the degree of scoliosis).  G-pro works like a digital gravity inclinometer.  It is very useful for Physical Therapists and Chiropractors in helping assess treatment efficacy.  It has been successfully tested in orthopedic, chiropractic, and physical therapy practices.  Using your device accelerometer chip to calculate the angle of rotation.  After that, you will only be able to measure angles relative to your device 0º.  In-house tests have shown tolerances of +-0. 2° and +-0. 3° depending on device.  And for initial consultations, re-evaluations, and day to day office visits providing patients a way to see their progress.  And can also be used for sports medicine, rehabilitation, radiology, engineering, architecture and more.  You can establish a relative 0º 10 times.  Precision designed for you.  With the full version of G-pro, you can set a relative 0º unlimited times, store up to 12 readings in memory, and advertising is removed.