Universal Altimeter

Universal Altimeter app turns your iPhone or iPad into barometric altimeter - no internet connection needed to measure elevation based on atmospheric pressure. You get some nice energy savings and extended battery life if you rely on barometric altimeter to know your altitude.

Mountain lovers can use our calibration settings to provide known values of atmospheric pressure, temperature and reference altitude to achieve perfect precision. We recommend to repeat calibration every few hours during your trip, or when significant changes in weather conditions happen. For your convenience, Universal Altimeter app provides a way to get these values automatically (iPhone GPS and internet access will be needed during calibration).

Furthermore, Universal Altimeter app enables you to log and graph your altitude changes over time to measure and analyse your progress.

Universal Altimeter app provides GPS altimetry as fallback. However, due to higher battery usage we recommend to use this feature only when proper calibration is not possible.

You can choose between metric and imperial units for altitude, pressure and temperature values.

Features:
* Barometric altimeter that relies on internal barometric sensor of your iPhone.
* Log and graph your pressure altitude to track progress.
* GPS-based altitude/elevation measurement.
* Manual calibration from known values of air temperature, atmospheric pressure and altitude.
* Automatic calibration from sensor data (requires internet access).
* You can choose from metric and imperial units.