🎧 Audiogram

Screening test, not a diagnosis

This is a quick pure-tone screening test. It cannot diagnose hearing loss, tell you the cause, or replace a hearing test with an audiologist. Consumer headphones and phones are not calibrated, so the dB HL values are approximate and can be many decibels out, differently at different pitches. If you have sudden hearing loss, ringing, dizziness or ear pain, or any worry about your hearing, see a doctor or audiologist.

1. Get ready

2. Set the volume

Turn the volume right down first. Press play, then raise the volume slowly until the pulsing 1 kHz beep is clearly audible and comfortable, like normal conversation, not loud. The app treats this beep as a fixed reference (about 55 dB HL) and sets every other level from it.

Note: if your hearing is poor you may set the volume higher, which makes results look better than they are. This is a known weakness of any uncalibrated test.

3. Left / right check

If they're swapped or in both ears, check the headphones (mono audio and balance settings in iOS Accessibility → Audio/Visual) and try again.

4. Options

Advanced: per-frequency calibration offsets (dB)

Default 0. A positive offset plays that pitch louder (use it only if you know your headphones are weak there). Applies to both ears. Saved on this device.

FrequencyOffset (dB)

Level mapping: 0 dB HL at 1 kHz = −80 dBFS (reference tone −25 dBFS = 55 dB HL); other pitches shifted by the TDH-39 RETSPL difference (ANSI/ASA S3.6-2018, used as a proxy); output capped at −3 dBFS and 80 dB HL.

Tick every box above to begin.

The test takes about 8–12 minutes. You press "I hear it" (or the space bar) whenever you hear a beep, however faint. Some checks are silent: don't press then. Nothing is uploaded; results stay on this device.