Safe QR vs Tonscape

Safe QR is a QR code reader that lets you review the destination URL before opening it, so you can browse more safely. You can also easily generate QR codes from links or text. All features are completely free to use, with no registration or login required. ● Key Features - Create Wi-Fi QR codes - Share QR codes - QR code reader / QR code scanner - Save scan and creation history - Regenerate previously created QR codes - Review URLs before opening them for safer access ● Privacy All scan and creation history is stored only on your device and is never sent to our servers.

Tonscape is a precise sine-wave tone generator and real-time spectrum analyzer in one clean app. Dial in any frequency your iPhone can actually produce — from 0.01 Hz up to the hardware Nyquist limit (around 24,000 Hz) — typed to two decimal places or swept with a logarithmic slider. Set the exact pitch you need, control the volume up to full output, and play a pure, continuous sine tone. Then prove it. The built-in microphone spectrum analyzer captures sound in real time and shows you the full frequency spectrum on a live, neon display. A single-frequency detector measures the exact level at any frequency you choose, and a noise-floor comparison tells you whether that frequency is genuinely present above the background — even faint signals buried in noise, thanks to spectral averaging. WHAT YOU CAN DO - Generate exact frequencies to 0.01 Hz, only the ones your device can truly produce - Adjust volume from silent to full power - See a live, averaging FFT spectrum analyzer with peak-hold - Tap the spectrum to probe any frequency independently of the tone you're playing - Get a clear "present / not detected" readout with dB-over-noise - Identify your iPhone model and its estimated speaker range RELAX & SLEEP (Pro) - Binaural beats and isochronic tones with brainwave-band presets (delta, theta, alpha, beta) - White, pink, and brown noise generators - Nature sounds: ocean, rain, wind, stream, campfire - Sleep timer with gentle fade-out, plus background playback so it keeps going with the screen off - One-tap presets: Schumann/earth resonance, Solfeggio, and tuning references SOUND DESIGN (Pro) - Sine, square, triangle, and sawtooth waveforms - Chords and a logarithmic frequency sweep GREAT FOR - Sleep, relaxation, focus, and meditation soundscapes - Testing speakers, headphones, and subwoofers - Checking whether a specific frequency is present in a room or signal - Audio education, tuning references, and equipment checks Note: binaural beats require headphones. Labels for resonance/Solfeggio presets are descriptive only — the app makes no medical or therapeutic claims. Tiny phone speakers roll off at very low and very high frequencies, so some tones may be inaudible through the built-in speaker even though the signal is generated correctly — use headphones or external speakers for the full range.