tonal.fm
Offline Edition

tonal.fm Pro

All 96 professional audio tools in one file. No install, no internet, no ads — just open and go. Yours for a single one-time purchase.

Get Pro — $9Try the free web tools

$14.99Launch price · One-time payment · No subscription

100% Offline

Every tool runs locally in your browser. No internet, no server, works anywhere.

Zero Ads

A clean, distraction-free workspace. No banners, no trackers, no pop-ups.

No Install Required

Just a single HTML file. Open it in any browser — Chrome, Firefox, Safari, Edge.

One-Time Purchase

Pay once, own it forever. No subscriptions, no recurring fees, no account needed.

Test Tone Pack

100+ reference WAV and MP3 files - 20 Hz to 20 kHz, alignment levels, sweeps, noise - ready for any device.

Includes the Test Tone Pack

The free site renders test tones on demand. Pro adds a ready-made library you can copy anywhere - longer, higher resolution, and already encoded as MP3.

Reference sines32 frequencies - ISO third-octave centres 20 Hz to 20 kHz plus 440 Hz · 60 s · 16-bit / 48 kHz
1 kHz line-up tones-6, -12, -18 (EBU) and -20 dBFS (SMPTE) · 24-bit / 96 kHz
SweepsLog up, log down, linear, bass 20-200 Hz · 60 s
NoisePink, white, brown · 5 minutes each
Channel IDLeft only, right only, polarity (inverted right)
MP3 320 kbpsEvery file, for phones, cars and players that refuse WAV

Need one file right now? The free test tone downloads page renders WAV and MP3 up to three minutes long.

Free web tools vs. tonal.fm Pro

Same trusted tools. Pro adds offline access, removes ads, and fits in a single file.

FeatureFreePro
96 core audio tools
Works in your browser
Requires internet
Ad-free experience
Works fully offline
Single portable file
Test tones: 30 s-3 min WAV/MP3 rendered in browser
Test Tone Pack: 100+ files, 24-bit/96 kHz, 5-min noise
Free updates

96 tools, one file

Everything on tonal.fm, bundled together and ready offline.

Tone GeneratorMulti-ToneSweepNoiseHearing TestMetronomeBinaural BeatsSignal GeneratorWhite NoisePink NoiseBrown NoiseGreen NoiseGray NoiseBlue NoiseViolet NoiseDual Tone GeneratorBass Tone GeneratorHigh Frequency TonesDTMF TonesMorse Code GeneratorAlarm Generator8-Bit SFX GeneratorTest Tone DownloadsTest Tone GeneratorHearing Age TestMosquito ToneTinnitus MatcherSubwoofer TestSpeaker Balance TestSpeaker Phase TestHeadphone TestSurround Sound TestAudio Latency TestBluetooth Latency TestAV Sync TestWater EjectFix My SpeakerSound TestBass TestDrum MachineBPM CounterChord PlayerChord ProgressionsOnline PianoTuning ForkInstrument TunerGuitar TunerUkulele TunerBass TunerViolin TunerPitch PipeInterval TrainerPerfect Pitch TestChord Ear TrainerEQ Ear TrainerBPM to MSRoom Mode CalculatorNote ↔ FrequencyNote FrequenciesdB ConverterTranspose CalculatorIsochronic Tones40 Hz Binaural BeatsBinaural Beats for SleepBinaural Beats for FocusSolfeggio FrequenciesShepard ToneDog Whistle432 Hz440 Hz528 Hz396 Hz639 Hz963 Hz1 kHz Test Tone40 Hz60 Hz100 Hz15 kHz17 kHz20 Hz174 Hz250 Hz285 Hz300 Hz417 Hz500 Hz741 Hz852 Hz2 kHz3 kHz4 kHz8 kHz10 kHz12 kHz20 kHz

tonal.fm Pro

$9$14.99

One-time purchase · Free updates

Buy & Download

Any Browser

Chrome, Firefox, Safari, Edge

Any OS

Windows, macOS, Linux, ChromeOS

Portable

Fits on a USB stick

Frequently asked questions

What is tonal.fm Pro?

tonal.fm Pro is the offline, ad-free edition of tonal.fm. It's a single HTML file containing 96 professional audio tools. Just open it in any browser — no install, no internet required.

How is it different from the free website?

The free web tools require internet and show ads. tonal.fm Pro is a one-time purchase that removes all ads and works completely offline. It's a single file you can keep on your computer, USB drive, or cloud storage.

Is it a subscription?

No. tonal.fm Pro is a single one-time purchase of $9. You own the file and there are no recurring fees.

What browsers does it work in?

tonal.fm Pro works in any modern browser — Chrome, Firefox, Safari, Edge, and more. It uses the Web Audio API which is supported by all major browsers.

Does it work offline?

Yes. The entire app is self-contained in a single HTML file. No internet connection is needed — it works anywhere, including air-gapped environments.

What is in the Test Tone Pack?

A folder of 100+ ready-made reference files included with Pro: 32 sine tones from 20 Hz to 20 kHz at ISO third-octave centres (60 s each, 16-bit / 48 kHz), 1 kHz at -6, -12, -18 and -20 dBFS in 24-bit / 96 kHz, log and linear sweeps, five-minute pink, white and brown noise, left / right / polarity channel-ID files, MP3 320 kbps versions of everything, and a README with the level conventions. Drop them on a USB stick, phone or measurement laptop - no browser needed.

How do I get the download?

Purchases are handled securely through Gumroad. After checkout you receive one zip containing the HTML app and the Test Tone Pack folder, plus access to future updates.