*** NOTE: Your device (handheld or wearable) must have a built-in pressure sensor or GPS. With this app, the wearable will *not* poll GPS data from the paired phone. Android Wear watches equipped with a pressure sensor include LG Watch Urbane, LG G Watch R, and Huawei Watch; with a GPS, Moto 360 Sport and Sony Smartwatch 3. ***

Smart Altimeter uses pressure sensor on your device to measure your altitude above sea level or previously chosen reference altitude (if your device does not have a barometer, the app will fall back to GPS). Advanced multiple-layer algorithms are used to smooth noisy measurements and to calculate descent rate. The app can also speak your current altitude.

Use of devices with high-speed barometric sensors (60Hz or faster) is highly recommended for the feedback lag not to exceed 0.2s.