This app acts as a Hygrometer or Humidity monitor and measures humidity in the air using device hygrometer sensor. You can also set alarm from the settings by setting the humidity value and also add a condition like greater than, less than or equal value. Also make sure to enable audio for alarm to work. Note: This app uses device hygrometer sensor to show humidity values. If your device don't have the available sensor it will not work for you. Accuracy depends upon device sensor.