About

Why I built Harmonic Recovery

I have diplacusis. I built Harmonic Recovery so I could practice with music and measure whether anything changes, and so others with it could too.

What I set out to make

The app does two things:

• Practice with music. Your own songs play clearly in the affected ear while the same music fades in and out in the other ear, a reference for the right pitch. It's based on research showing adult pitch hearing can recalibrate against a trusted reference.
• Honest measurement. A careful pitch-matching check, repeated over time, so you can see for yourself whether your mismatch is changing.

What I promise, and what I don't

• It isn't a treatment. No study has tested this method for diplacusis yet. Here's the research and its limits.
• It won't overclaim. The app only calls a change real when it's bigger than your own normal variation.
• Your results stay on your phone. No account, no ads. Details.
• Nothing is deleted if you stop paying. Measurement stays free, because everyone deserves to know whether their hearing is changing.

Who's behind it

Harmonic Recovery is made by Tinibo LLC, a small independent developer. I'm not a doctor or audiologist. The health pages on this site summarize published research and public health sources, cited on each page and dated with when they were last reviewed. If you're a clinician or researcher and see something to correct, or would like to study whether this kind of practice helps, I'd love to hear from you.

Harmonic Recovery

Try it for yourself

A headphone setup tuned to each of your ears, a pitch-matching check at six frequencies, a pitch hint that plays in your other ear while you listen to your own songs, 3-minute drills, and a chart that shows whether anything is changing. Free to start.

On a computer? Scan with your phone's camera to open the app in its store.