LärmApp is a free Android application developed by Monks Vertriebs GmbH in the Lifestyle category. It allows you to measure the noise level in your environment using your smartphone's microphone and assess if it could be harmful to your health. The app also provides information on how noise damages your hearing, the signs of hearing loss, and how to protect your hearing.

With LärmApp, you can easily measure the noise level in decibels (dB) and determine the level of risk it poses to your hearing. The app also includes a noise table that compares everyday sounds to provide more context.

The app is published by the German Professional Association of Otorhinolaryngologists (Hals-Nasen-Ohren-Ärzte), ensuring that the information provided is reliable and accurate. However, the developer notes that due to the hardware differences of Android smartphones, some devices may not accurately measure the volume.