Tone Generator+ Freq

Generate precise audio tones from 20 Hz to 20 kHz. Sine, square, and sawtooth waves for testing, calibration, and tuning.

Tone Generator+ Freq produces precise audio tones at any frequency you choose. Generate sine, square, sawtooth, and triangle waveforms for testing, calibration, tuning, and audio experiments.

Set your desired frequency with a precise slider or type the exact Hz value. Adjust volume and select from multiple waveform types. The app generates clean, stable audio signals through your iPhone speaker or connected audio output.

Ideal for speaker testing, audio equipment calibration, musical instrument tuning, science experiments, hearing range testing, and sound therapy. Sweep through frequency ranges to test audio equipment response.

Professional-grade signal generation in a simple interface. Supports the full audible range from 20 Hz to 20,000 Hz with smooth, glitch-free output at any frequency.