This will measure the speed and distance of an elevator using your devices accelerometer
Place the device against the elevator wall on a flat surface (e.g. the floor), follow the on screen instructions.
Don't worry if you don't hold it exactly straight, it will allow for that, but the device must be held VERY still and must not be moved after calibration, or the speed shown will be incorrect.
Last updated on 2015年09月13日
此版本包含小幅错误修复和常规改进。请更新至最新版本，以获得更佳体验。
