o46scope vs Hurtz

o46scope is an audio measurement app for iPhone and iPad that helps you visualize sound in real time. It supports oscilloscope and FFT spectrum display, allowing you to inspect waveforms and frequency components instantly. The app also supports internal signal generation with Tone1 / Tone2 and test signal (Beep) output, making it useful for quick checks, learning, and simple audio measurement tasks. Key features • Oscilloscope display • FFT spectrum display • Signal tab for signal control • Internal signal generation with Tone1 / Tone2 • Speaker output for tones • Test signal (Beep) output • Adjustable parameters Premium Tone1 / Tone2 internal signal generation is available as a premium feature. It is available without ads. Ideal for users who want waveform visualization, frequency analysis, and signal generation in one app. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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.