RulerPhone=inaccuracy

This app is really not accurate if I use a credit card to measure. I dont know if there is any way to make the blue card smaller because when these two cards are aligned, the measurement is really out of range. I tried so many times and not a single time is accurate. I wont refer this app to anybody unless I can adjust the blue card size. I really regret that I trusted those testimonials.

astorotsa about RulerPhone - Photo Measuring