# Tone Generator: Hz & Frequency — Hearing Test, Noise, Metronome > Hearing Test, Noise, Metronome (iPhone/iPad app by KirsuLab LLC.) - Source: https://appshunter.io/ios/app/tone-generator-hz-and-frequency/id6819103133 (this page in markdown: same URL + `.md`) - Developer: [KirsuLab LLC](https://appshunter.io/developer/6778971522) - Category: Music, Utilities - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.0 · 47 MB - Languages: American English, French (France), German (Germany), Hindi, Indonesian, Italian, Japanese, Korean, Polish, European Portuguese and 5 more - Released: 2026-10-27 - Data updated: 2026-11-06 ## What is Tone Generator? A tone and frequency generator for testing speakers, checking your hearing, tuning instruments and making steady sound for focus or sleep. Pure tones from 1 Hz to 22 kHz, white, pink and brown noise, binaural beats, isochronic pulses, sweeps and a metronome. Every feature is free. TONE GENERATOR • Any frequency from 1 Hz to 22 000 Hz - slide, step by 0.1, 1, 10 or 100 Hz, or type it in • Sine, square, triangle and sawtooth waves • Pick a note in any octave, with A4 tuned from 432 to 444 Hz (440 Hz by default) • Vibrato, tremolo, ring modulation, pulse width and an on-off pulse for isochronic tones • Mix up to ten tones at once for chords, beats and test signals • Popular frequencies one tap away - 432 Hz, 440 Hz, 528 Hz and 1 kHz - and pin your own TEST SPEAKERS, SUBWOOFERS AND CAR AUDIO • Bass test sweep from 200 Hz down to 20 Hz, to hear where your speaker or subwoofer runs out • Frequency sweeps, linear or logarithmic, with up to five legs in one run • Left, right or anywhere in between, to check one speaker at a time • Flip the right channel's polarity to check that two speakers are wired the same way • Export any signal to a WAV file, up to five minutes, at a set peak level for car audio HEARING CHECK • Checked the way an audiologist does it: eight pitches from 250 Hz to 16 kHz, one ear at a time • Your result as an audiogram - see where your hearing dips and how your two ears compare • A hearing range sweep for the highest pitch you can hear • Save the result as a PDF • Not a medical test NOISE AND BINAURAL BEATS • White, pink, brown, blue, violet and grey noise, generated live and never looped • A slow drift between the ears and a breathing swell • Lay noise under a tone, a mix or binaural beats, as loud as you like • Binaural beats with a different tone in each ear, delta to gamma in one tap METRONOME • 20 to 400 BPM - slide, step, type or tap the tempo in • Any meter from 1/4 to 12/8, with eighths, triplets or sixteenths • Stress or mute any beat, four click sounds and a tempo trainer • Feel the beat as a buzz or see it as a flash, with or without the click KEYS AND DIAL TONES • A playable keyboard with chords and arpeggio • DTMF telephone tones BUILT FOR LONG SESSIONS • Plays with the screen off and in other apps, with controls and tempo on the lock screen • A Control Centre button, and quick actions on the app icon for a tone, noise, the metronome or the hearing check • Auto-stop from 5 minutes to 8 hours, with a gentle fade at the end • Sequences: setups that play one after another, each for its own time, once or in a loop • Named presets you can move to another phone, and recent frequencies one tap away • Share a tone as a link that opens in the app or in a browser • No clicks on start, stop or any change, every wave at the same loudness • Six colours, light and dark, and the app icon follows • For iPhone and iPad, two panes on iPhone Duo, 15 languages and a step-by-step guide WHAT PEOPLE USE IT FOR • Speakers and subwoofers: rattles, buzzes and where the bass rolls off • Car audio: test files at a known level, crossovers and channels • Room acoustics: find the frequencies where a room booms • Musicians: a reference pitch and a metronome in one app • Classrooms and labs: resonance, beats, Chladni plates • Focus and sleep: steady noise with a timer that fades out ACCURATE BY DESIGN • Band-limited square, triangle and sawtooth waves - no aliasing, even near 22 kHz • Plays at your device's native sample rate, nothing resampled • Pauses for calls and stops when headphones are unplugged • Works offline, with no account and no sign-up TURNING ADS OFF • After you press Stop, an ad without sound may show - never while a tone plays • The "No ads for 24 h" button, for watching a short video • A one-time purchase of the app without ads HEARING SAFETY Pure tones put all their energy on one frequency and feel quieter than they are. Start at a low volume. Made by KirsuLab LLC. ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Remove ads | $2.99 | one-time | ## Is Tone Generator safe? Not enough ratings yet to assess Tone Generator. ## Is Tone Generator legit? Tone Generator: Hz & Frequency appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Tone Generator is 65 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 1.1.3 — 2026-11-04 New speaker cleaner: a tone gliding from 120 to 400 Hz in short bursts for 30 seconds through the phone's speaker, with a countdown and a stop by itself. It never plays into headphones. Widgets for the Home Screen and Lock Screen, Siri and Shortcuts actions, and a live countdown on the Lock Screen and in the Dynamic Island. Tone generator from 1 Hz to 22 kHz, hearing test, noise, binaural beats and a metronome. Every feature is free. ### 1.1.2 — 2026-10-31 New speaker cleaner: a tone gliding from 120 to 400 Hz in short bursts for 30 seconds through the phone's speaker, with a countdown and a stop by itself. It never plays into headphones. Widgets for the Home Screen and Lock Screen, Siri and Shortcuts actions, and a live countdown on the Lock Screen and in the Dynamic Island. Tone generator from 1 Hz to 22 kHz, hearing test, noise, binaural beats and a metronome. Every feature is free. ### 1.1.1 — 2026-10-28 Tone generator for any frequency from 1 Hz to 22 kHz, now with a hearing test for each ear and an audiogram you can save as a PDF. Pink, white and brown noise under any tone for sleep and focus, binaural beats, sweeps for speaker and subwoofer tests, and a metronome that buzzes or flashes on the beat. Start a tone from Control Centre or the app icon. Every feature is free. ### 1.1.0 — 2026-10-27 Hearing check: each ear at eight pitches, with a chart you can save as a PDF. Noise under the tone, sequences of presets, and a Pulse effect. A Control Centre button, quick actions on the app icon, and lock screen controls. Share a tone as a link, and save presets to a file. The metronome can vibrate or flash on the beat. ### 1.0.0 — 2026-10-27 No release notes. ## More apps by KirsuLab LLC - [Tessera: Sliding Puzzle](https://appshunter.io/ios/app/tessera-sliding-puzzle/id6778971520) - [Ink Dots: Territory Capture](https://appshunter.io/ios/app/ink-dots-territory-capture/id6785680981) - [Breathe: Calm, Focus & Sleep](https://appshunter.io/ios/app/breathe-calm-focus-and-sleep/id6792378135) - [Evermur: Sleep & Rain Sounds](https://appshunter.io/ios/app/evermur-sleep-and-rain-sounds/id6792441950) - [Tuner: Guitar, Ukulele, Violin](https://appshunter.io/ios/app/tuner-guitar-ukulele-violin/id6794772840) - [EZKnow: Live Fuel Prices](https://appshunter.io/ios/app/ezknow-live-fuel-prices/id6797233673) All apps by KirsuLab LLC: https://appshunter.io/developer/6778971522 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-06.*