Enter your current room temperature from your weather station. The app measures the speaker→mic travel time and calibrates itself to your exact device. After this, every sweep reports live room temperature to ±0.5°C.
°C
Press START · walk in a circle · swing phone outward
Motion Intensity—
🌡 Room Temp°Cv=343.4 m/s← from weather station
①Press START — allow mic popup
②Stretch arm out · walk slowly around the room
③Swing phone in a loose circular arc while walking