Multiple Tone Gen vs Hurtz

MultiToneGenerator is an audio tool capable of generating precise test signals with customizable frequency, volume, and panning settings. It allows you to combine multiple waveforms and play them simultaneously. Configure up to 10 separate tones. Suitable for a wide range of applications, including acoustic tuning, audio equipment testing, and listening training. [Supported Waveforms] - Sine wave - Triangle wave - Sawtooth wave - Square wave [Key Features] - Frequency specification (e.g., 20Hz–20kHz) - Volume adjustment - Panning settings (Left to Right) - Background playback - Simple, intuitive UI [Use Cases] - Testing speakers and headphones - Checking hearing sensitivity across frequencies - Calibrating audio equipment - Audio training and educational purposes

Hurtz is a clean, precise audio tone generator. Dial in any frequency from 20 Hz to 20 kHz and hear it instantly — great for testing speakers and headphones, tuning instruments, or producing a steady reference tone. FEATURES • Any frequency, 20 Hz – 20,000 Hz, set by a slider or typed in exactly (with a log or linear scale). • Four waveforms: sine, square, saw and triangle. • Quick presets (100, 220, 440, 1k, 10k Hz). • Nearest musical note read-out with cents (A4 = 440), handy as a tuning reference. • Frequency sweep: glide smoothly from one frequency to another over a set time. • Stereo mode: set a different frequency on the left and right channels, with a live difference (Δ) read-out. Useful for stereo and channel checks, and for binaural tones (use headphones). • A live oscilloscope view of the waveform. • Adjustable volume, and a large play/stop control. • Works on iPhone and iPad. Everything runs on your device. The app has no ads, no accounts, no tracking, and no internet access — it collects no data at all. SAFETY Sustained high-volume tones — especially very high or very low frequencies — can be uncomfortable and may risk hearing or small speakers. Start at a low volume.