Nature sounds
Ten background loops: crickets, cicadas, wind, a river, a stream, ocean surf, a crackling fire, a forest, a coffee shop.
ACRN
Acoustic Coordinated Reset Neuromodulation. Four quiet tones sit close around your tinnitus pitch, two below and two above, and play in a shuffled order with a short gap after each. In tinnitus the nerves tuned to nearby pitches tend to fire together; the random order is meant to break that up.
Spectral Ripple
A shimmering wash built from many tones at once, whose volumes rise and fall in a pattern that never settles, so no two pitches near your tinnitus hold a steady relationship.
Setting the pitch
Hold the frequency slider and a tone follows the slider, stopping when you let go. Switch between a clear tone and a hiss, whichever is closer to your own tinnitus. This sets the pitch the two tone-based sounds are built around.
Built to leave running
Can play in the background. Mixes with music and podcasts instead of interrupting them.
Privacy
The app contains no networking code, so it cannot send anything anywhere. No account, no analytics, no tracking. Your settings stay on your phone.
Free and paid
The free version plays one sound at a time. Unlock simultaneous playback with a one-time purchase. No subscription.
Research
ACRN follows Tass and colleagues (2012). Spectral Ripple follows Yukhnovich and colleagues (2025).
This app implements the methods those papers describe. It is not the equipment the studies used, and there is no guarantee it produces the same results.
This app is not a medical device. It does not diagnose, measure, or treat any condition. Start at low volume and only turn it up if it feels okay. Stop if your tinnitus gets worse or anything hurts. Talk to a doctor or audiologist for medical advice about your tinnitus.