Tone Generator: Hz & Frequency

Tone Generator - every signal you need, on your phone

Pure tones from 1 Hz to 22 kHz, six colours of noise, sweeps, binaural beats, a mix of up to ten tones, a playable keyboard and a metronome. Clean sound, a calm screen, and nothing locked behind a paywall.

TONE
• 1 Hz to 22 000 Hz - slide, tap − and + for exact steps, or type the number
• Sine, square, triangle and sawtooth
• Pick a note by name, in any octave, with A4 tuned from 432 to 444 Hz
• Vibrato, tremolo, ring modulation and pulse width
• Pin the frequencies you keep coming back to

MIX
• Up to ten tones at once - chords, beats, test signals

BINAURAL BEATS
• A different tone in each ear, as far apart as you choose
• Delta, theta, alpha, beta and gamma in one tap

NOISE
• White, pink, brown, blue, violet and grey - never a looping sample
• A slow drift between the ears and a breathing swell

SWEEP
• Glide between frequencies, linear or logarithmic, once or in a loop
• Chain up to five legs into one unbroken sweep

KEYS AND DIAL TONES
• A playable keyboard with chords and arpeggio
• DTMF telephone tones

METRONOME
• 20 to 400 BPM - slide, step, type, or tap the tempo in
• Any meter from 1/4 to 12/8. Tap a beat to stress it or mute it
• Eighths, triplets or sixteenths under every beat
• Four click sounds, and a trainer that speeds up every few bars

BUILT FOR REAL USE
• Keeps playing with the screen off or in another app - or stops when you leave, your choice
• Built-in bass test, hearing-range sweep and speaker cleaner
• Save any setup as a named preset
• Export any signal to a WAV file, up to five minutes long
• Left/right balance, to test one speaker at a time
• Auto-stop from 5 minutes to 8 hours
• The phone's own volume on screen, so you see the level before you press Play
• Six colour skins, each with a light and a dark side. The app icon follows your choice
• Tablet layout, 15 languages
• A one-time purchase removes the ads for good. Every feature is free either way

CLEAN SOUND
• No clicks on start, stop or any change
• Every wave shape plays at the same loudness
• Full-screen ads are always silent

HEARING SAFETY
Pure tones concentrate all their energy on one frequency and feel deceptively quiet. The app opens with a short safety notice and keeps it one tap away.

This app is not a medical device.

Made by KirsuLab LLC.