Barometer is a free Android app developed by AFS-Software GmbH u Co KG, falling under the Lifestyle category and the subcategory of Weather. As the name suggests, the app is designed to measure air pressure and altitude. The app uses your phone or tablet's air pressure sensor to provide you with real-time and accurate air pressure readings. However, it should be noted that not all devices have an air pressure sensor.

The app offers a range of features, including the current air pressure, the measured maximum and minimum pressure, and the option to shift the sensor to increase the accuracy of the measured value. Additionally, the app includes a height calculation feature that works without GPS reception, making it useful for height difference representation in caves and interiors.