Hzera uses clinically researched notch sound therapy to target your exact tinnitus frequency. Calibrate in minutes, listen daily, and let your brain do the rest.
Millions of people hear a constant ringing, buzzing, or hissing that no one else can hear. Tinnitus isn't a disease — it's how the brain processes sound when something changes in the auditory system.
An estimated 15–20% of people experience some form of tinnitus. For many, it's most noticeable in quiet environments — making bedtime, focus work, and relaxation the hardest parts of the day.
Stress, fatigue, caffeine, and loud noise exposure can all temporarily worsen the perception. But the underlying cause is usually neural: the brain's auditory cortex amplifying signals that aren't there.
That's where retraining comes in. The brain created the pattern — and with the right approach, the brain can learn to quiet it.
Experience some form of tinnitus — you are far from alone in this.
Tinnitus often feels louder in quiet environments, disrupting sleep and concentration.
Tinnitus is generated by overactive neurons in the auditory cortex — and the brain can be retrained.
Notch therapy is grounded in peer-reviewed neuroscience research from the University of Munster, Germany.
Hzera combines multiple clinically researched methods into a single, easy-to-use therapy experience.
The core of Hzera. A narrow frequency band (~4.5% bandwidth) is precisely removed from your chosen soundscape at your tinnitus frequency. This "notch" triggers lateral inhibition — neighbouring neurons suppress the overactive ones responsible for your phantom sound. Over weeks of regular listening, neural activity at your tinnitus frequency decreases.
Lateral InhibitionBased on the Jastreboff model, therapeutic sound is played just below your tinnitus perception level. Over time, your brain learns to classify tinnitus as unimportant background noise, reducing both the perceived loudness and the emotional distress associated with it by calming the limbic system response.
Jastreboff ModelHzera generates organic, never-repeating sound patterns using fractal algorithms. These complex textures keep the auditory cortex gently engaged, reducing the brain's ability to fixate on the tinnitus signal — without causing habituation from repetitive loops.
Neural EngagementTinnitus often presents differently in each ear. Hzera supports independent left and right channel calibration, applying separate notch filters to each ear. This maximises the lateral inhibition effect exactly where it's needed, addressing bilateral asymmetry with precision.
Bilateral PrecisionHow the notch filter works — your tinnitus frequency is removed from the soundscape
Hzera's guided onboarding walks you through a clinically informed process to identify your exact tinnitus frequency — no specialist equipment needed.
A guided two-stage process: first, a coarse sweep across the full 20 Hz – 20 kHz spectrum to narrow the range, then fine-tuning in precise 5 Hz increments to pinpoint your exact tinnitus pitch.
FreeA 10-question tinnitus handicap inventory evaluating sound type, duration, pattern, affected ears, and daily life impact. Generates a severity score (0–40) across five clinical grades from Slight to Catastrophic.
FreeEvery therapy session is logged with duration, frequency, and soundscape choice. View weekly trends, build listening streaks, and track total therapy time to stay consistent with your retraining.
FreeYour score guides personalised recommendations — from self-monitoring to professional referral.
Minimal impact. Monitoring recommended.
Noticed mostly in quiet environments.
Noticeable impact on daily life.
Professional consultation recommended.
Immediate professional support needed.
Each soundscape has your personalised notch filter applied in real time. Pick the ones you enjoy — longer listening means better outcomes.
Deep & warm
FreeBalanced
FreeFull spectrum
FreeSteady downpour
FreeWoodland calm
FreeSoft & ethereal
PremiumWarm bloom
PremiumDeep cascade
PremiumAmbient terminal
PremiumBirdsong
PremiumCrackling warmth
PremiumRolling waves
PremiumDistant rumble
PremiumDesigned for daily use — simple enough for a first session, powerful enough for months of therapy.
Full 20 Hz – 20 kHz range with 5 Hz fine-tuning. Quick Tune lets you recalibrate any time your tinnitus changes.
All data stays on your device. No accounts, no analytics, no tracking. Works entirely offline after install.
Fall asleep to therapy. Set a timer from 15 to 120 minutes and the app gently fades out automatically.
Consistency is key. Set personalised reminders to keep your therapy streak going strong.
Weekly trends, streak tracking, total listening time, and detailed soundscape breakdowns to monitor progress.
31 rotating tips across 7 categories — from usage guidance to tinnitus science — to keep you informed and motivated.
No subscriptions, no recurring charges. One payment unlocks everything — forever.
A complete tinnitus therapy tool at no cost.
Unlock every feature with a single payment.
Results come with consistency. Here's what the science says about the timeline.
Your brain begins adapting to the notch-filtered sound. Many people notice improved relaxation and sleep quality even before tinnitus volume changes.
Lateral inhibition strengthens. Most users report tinnitus becoming less noticeable during this period. Consistency of 1–2 hours daily accelerates results.
Sustained retraining leads to long-term changes in auditory cortex activity. The brain progressively reduces amplification of the tinnitus signal.
Listen while working, reading, or relaxing — therapy works in the background. Pair it with an existing habit for the easiest consistency.
Listening before bed is especially effective. The brain continues processing therapeutic sound during sleep, amplifying the retraining effect.
Use headphones for maximum precision — over-ear headphones are most comfortable for long sessions. The notch filter is tuned specifically for your ears.
Have a question, found a bug, or need guidance with your therapy? Reach out any time.
We aim to respond within 24 hours.