Find your tinnitus.
Shape the sound around it.

The Full Diagnostic is a guided, self-administered battery that characterizes your tinnitus in about 12 minutes, entirely on your device. It matches your pitch (for tonal tinnitus) or a band of noise (for hissing and roaring), runs a hearing-threshold screen, finds the level that just masks your tinnitus, tests for residual inhibition, and screens for sound sensitivity and medical red flags. When you're done, one tap can apply your matched pitch and notch width to your therapy.

It is screening-grade, meant to guide your therapy and track changes over time. It is not a calibrated audiogram or a medical diagnosis, and it does not replace an audiologist or ENT specialist. If your tinnitus is sudden, one-sided, pulsing, or accompanied by hearing loss or dizziness, please see a doctor. A quick 3-minute assessment is also available when you just want a fast check.

Calibration is a two-stage process designed to pinpoint your exact tinnitus frequency. Before you start, put on wired or Bluetooth headphones, find a quiet room, and set your device volume to a comfortable low level.

1. Match the pitch (coarse sweep). Tap Tune and drag the slider across the 20 Hz–20 kHz range until the tone most closely matches the pitch of your tinnitus. Don't worry about being exact; just get into the right neighborhood.
2. Dial it in (fine-tuning). Tap Next. You'll see a large frequency readout with + and − buttons that move in 5 Hz increments. Tap back and forth until the tone is indistinguishable from your tinnitus.
3. Volume match. Adjust the tone volume so it's perceived at the same loudness as your tinnitus. This calibrates therapy to your level of perception.
4. Save your profile. Premium users can save unlimited profiles, which is useful if your tinnitus pitch varies, or if you want separate left and right ear calibrations.

You can recalibrate at any time from the Tune button on the main screen.

Yes. Hzera's notch filter is tuned to your exact tinnitus frequency, and headphones deliver that filtered signal precisely to each ear. Speakers won't give you the same effect because the sound mixes with the room acoustics before it reaches you.

Either wired or Bluetooth headphones work fine. Over-ear models tend to be comfortable for longer listening sessions.

Hzera can stream to compatible Bluetooth hearing aids, but a hearing aid's own digital signal processing may reshape the audio after it leaves the app. Depending on the fitting, that can include frequency lowering, compression, noise reduction, or feedback control.

If exact spectral output matters to you, ask your hearing professional whether a media or music program is appropriate. Hzera cannot bypass or measure processing performed by the hearing aids.

Published studies use varied schedules, and there is no universally proven daily dose. Choose a comfortable routine you can sustain and follow professional guidance if you have it.

You can listen while working, reading, exercising, commuting, or relaxing when background sound is comfortable and safe for the activity.

Published studies commonly measure outcomes over weeks or months, but the evidence is mixed and no individual timeline can be predicted.

Tracking sessions and re-taking the built-in assessment can help you compare your own longer-term trend. These records do not prove that a listening mode caused a change.

Notch mode removes a narrow band around your calibrated frequency. Published studies have explored lateral inhibition as a possible mechanism, but findings are mixed.

Coordinated Reset (CR) presents four short tones around your frequency in varied order. It is based on an experimental neural-desynchronization concept.

You can switch modes at any time. Compare comfort rather than trying to maximize intensity, and stop a mode that feels unpleasant.

Yes. Tapping the main playback button pauses the soundscape and resumes it from exactly where you stopped, with no need to restart from the beginning. Your current session keeps tracking through the pause, so short breaks won't fragment your listening time.

Lock-screen and Control Center pause/play controls work the same way.

Premium is a one-time unlock, not a subscription. It adds:

• Coordinated Reset therapy mode
• Per-ear notch (independent frequencies for each ear)
• Advanced notch settings: width from ½ to 4 octaves, Deep or Soft depth, enhanced notch edges, plus related-frequency notches below and above
• Unlimited saved profiles
• The full library of 24 soundscapes
• Custom audio import (use your own tracks)
• Detailed session insights and CSV export
• Extended sleep timer durations

Premium is shared through Family Sharing, so everyone in your family group gets access.

Mostly the price model and feature set. Hzera Premium is a single $4.99 purchase, which is less than one month of many subscription apps, and it includes both listening modes, the full diagnostic, per-ear processing, guided advanced notch controls, custom audio import, and Family Sharing.

The free tier includes the diagnostic, full calibration, real-time notch filtering, and five soundscapes, so you can evaluate the experience before purchasing.

Yes, in three ways:

• Guided Setup and width. Start with Standard or Broad Range, then choose ½, 1, 2, or 4 octaves deliberately. Wider removes more source content; it is not presented as more effective.
• Related-frequency notches. At ½ octave, add ¼×, ⅓×, and ½× below plus 2×, 3×, and 4× above. Hzera blocks this bank at wider settings to prevent destructive overlap.
• Per-ear notch. If each ear rings at a different pitch, enable Per-Ear Notch to run an independent notch filter on each channel.

Choose Deep to completely remove sound exactly at each selected frequency, or Soft for a −12 dB center reduction with the same two-sided boundaries. The live spectrum labels every active notch and updates immediately. All three options are Premium features.

Tinnitus can shift, sometimes day to day. If you notice the tone you calibrated to no longer matches what you hear, just tap Tune and recalibrate; it only takes a couple of minutes. For small adjustments, use Quick Tune to nudge the frequency in fine increments without re-running the full calibration.

Premium users can save multiple profiles and switch between them if your tinnitus has recurring patterns.

Related Frequency Notches remove several bands from the source instead of one. Depending on the soundscape, that can make the result naturally thinner or less full. Hzera compensates the overall playback level within a safe limit, but added volume cannot replace frequency content that the filters removed.

A quieter or thinner result does not mean the setting is stronger or more effective. Use Frequency Fit as a source-content guide, compare sounds at a comfortable level, and choose the combination you prefer.

No. Hzera is privacy-first. Everything, including your calibration, profiles, session history, and assessment results, is stored locally on your device. We don't operate an account system, don't sync to the cloud, and don't track you. There's no analytics SDK in the app.

See our Privacy Policy for full details.

No. Hzera is not a medical device and does not diagnose, treat, or cure tinnitus or any other condition. It's a sound tool informed by published research into notch filtering and Coordinated Reset patterned listening.

If your tinnitus is severe, sudden, or accompanied by other symptoms, please consult an audiologist or ENT specialist. Hzera is not a substitute for professional care.