Frequency Generator: Tone Hz

Tone Generator: Frequency Hz is an audio tone generator for your phone. Choose any frequency from 1 Hz to 22 kHz, press the big Play button under the dial and hear it right away. Sine, square, sawtooth and triangle waveforms, plus white, pink and brown noise.

▶ MAIN FEATURES
• Frequency 1 Hz – 22 kHz: arrows, semitone and octave steps, A4 button
• Note name and cents readout
• Exact Hz entry for the right ear, mixer tones and sweep
• Sine, square, sawtooth, triangle, white, pink and brown noise
• Frequency sweep between two frequencies, once or looping
• Mono, stereo, binaural beats and isochronic tones
• Dual tone and a mixer for up to four tones
• Presets that start the sound in one tap, and your own saved presets
• Sleep timer: 15, 30 or 60 minutes
• Instrument tuner using the microphone
• Water Eject: 165 Hz at full volume to help push water out of the speaker

▶ HOW TO USE
1. Pick a waveform — sine gives the cleanest tone.
2. Set the frequency with the arrows or semitone steps, or tap a preset.
3. Keep the volume low to start.
4. Tap the big Play button (or the dial).
5. Try a preset, a sweep, or a binaural beat.

▶ PRESETS
Tinnitus masking tone, sleep, A4 440 Hz, subwoofer 60 Hz, bass strings E A D G, dog whistle, cat repel, a brainwave beat pack and solfeggio tones. Each one plays as soon as you tap it.

▶ WHO USES IT
• Musicians tuning to an exact Hz
• Speaker, headphone and subwoofer testers
• Students learning about sound and waveforms
• Anyone who wants a steady tone or noise while focusing or resting

▶ SAFETY
Start quiet — loud tones, especially high frequencies, can harm hearing and speakers. Brainwave and solfeggio presets are traditionally used in relaxation and focus routines and are not a medical or therapeutic treatment. The tinnitus preset is a masking tone, not a treatment.

Available in 30 languages.

Recent changes:
What's new in 1.0.27
• Big Play button right under the dial (tap the dial too)
• Presets start the sound in one tap and retune live while playing
• Tones, binaural beats and mixer layers now match the Hz shown
• Line icons, haptic feedback and steadier numbers