Pure-tone audiometry is the basic hearing examination which determines the degree of hearing loss in relation to the sound frequency.

Hearing Test features:
* pure tone audiometry using bundled headphones and predefined calibration coefficients from the database (possible for systematically increasing number of devices)
* calibration of the device (in the case of lack of predefined coefficients or for headphones other than bundled).

Additional features:
* viewing tests results
* adding notes to tests results
* printing of the tests results
* adjustment of calibration (calibration coefficients may be adjusted on the basis of your audiogram produced using an audiometer).
* verification of calibration coefficients
* suppressing of the masking noise for the purpose of free field audiometry.

Pro version features:
* local database (offline access to tests results without connecting to the server)
* synchronization (your tests results can be stored on a remote account created for a given email address; data are easy to recover transfer to/from any other mobile or simultaneously synchronize on different devices).