Barometer and Altimeter Free is an Android application developed by waldau-webdesign.de that measures air pressure and calculates altitude based on the QNH value of the nearest airport. This tool offers a range of features that make it a reliable and user-friendly choice for those in need of accurate air pressure and altitude readings.

One of the key features of Barometer and Altimeter Free is its ability to measure air pressure and calculate altitude in various units, including hPa, mBar, kPa, mmHg, Torr, inHg, cmAq, ftAq, psi, and atm. Users can also choose their preferred primary altitude and pressure units. Additionally, the app displays the accuracy of the readings and shows data of the sensor as information. The keep screen on option is also available for users who need to continuously monitor air pressure and altitude.

It is worth noting that the values shown in the application are indicative and depend on the device used. Some devices may not have an air pressure sensor, or accuracy may vary, so the app does not guarantee or assume responsibility for the accuracy of the information. Overall, Barometer and Altimeter Free is a 100% free app with no ads and a user-friendly interface that delivers reliable air pressure and altitude readings.