Sound Thermometer PRO is an app experimental app to measure air temperatures. Unusually to other apps, the measurement process is based on the sound. Specifically, the distance traveled by a sound wave from point A (phone speaker) to point B (earphones). The app is based on a genuine technical paper and the algorithm behind it is fueled by advanced math. IMPORTANT NOTICE: This is an experimental project so the measurements may not be consistent and may vary. The quality of measurement depends on the quality of the materials used to manufacture your headphones.