Frequency Lab: Hz & Cymatics

See your sound. Hear it. Then measure it. Frequency Lab is a precise sound lab for your iPhone. Play any frequency, build binaural and isochronic beats, and watch each tone settle into a real Chladni sand figure. A built-in analyzer shows the exact Hz, so you never have to take a number on trust. WATCH SOUND SHAPE SAND • Real Chladni plate physics: sand gathers on the plate's vibration pattern for the tone you play • A full-screen player with a plate figure for every session • A liquid dish of water or mercury that ripples to your tone (Pro) MEASURE IT YOURSELF • Target, measured and error, in Hz, with a live spectrum and waveform • Tap Listen to measure through the mic: the phone's speaker, a tuning fork, a singing bowl or your voice • Sound is analysed on your phone. Nothing is recorded or uploaded PRECISE TONES AND BEATS • Any frequency from 0.1 Hz to 22 kHz, set to 0.01 Hz • Sine, triangle, square and saw waves • Binaural beats (headphones) and isochronic beats, or both at once on one shared beat rate • Left ear, right ear and beat shown in Hz • A 40 Hz click train: 1 ms clicks of a 10 kHz tone, the sound used in gamma-sound research READY-MADE SESSIONS AND GUIDED PROGRAMS • Sleep, Focus, Relax and Meditate sessions, each saying exactly what plays • Guided programs: Wind-Down (a session a night for 7 nights), Focus Builder (5 work blocks) and Calm Week (7 short breaks), with a plain note for each step. The first step is free, the rest is Pro • Frequency libraries: Solfeggio, the Schumann resonance, brainwave bands and the Cousto cosmic octave • Search by name, sound or Hz • Favorites and recently played SOUNDSCAPES, PADS AND VISUALS (Pro) • Rain, waves, wind, drips and white, pink, brown, blue or violet noise, each drawn in sand as it plays • Dreamscapes: slow ambient pads tuned to the frequency you choose • Audio-reactive visuals: kaleidoscope, aurora, orbs and plasma • Save your own sessions and templates BREATHE, SLEEP, FOCUS • Breathing guides: resonance (6 breaths a minute), box (4-4-4-4) and cyclic sighing, with a soft tone and a ring of sand • Sleep timer with a gentle fade • Focus intervals: 25/5 x 4 or 50/10 x 2, with a soft bell at each change • Keeps playing with the screen locked, with lock-screen controls SIGNAL VS LORE Every frequency in Frequency Lab is real, precisely generated and measurable. The meanings attached to numbers like 432 or 528 Hz come from tuning traditions, and the app labels them as tradition, never as fact. Where research is mentioned, the app says what the studies found and where results are still mixed. Frequency Lab is a sound and visual tool, not a medical device. FREE AND PRO Free: the tone generator, binaural and isochronic beats, the 40 Hz click train, the analyzer and mic measurement, the frequency libraries, the Chladni plate, the sleep timer, focus intervals, breathing guides and the first step of every program. Frequency Lab Pro is a one-time in-app purchase that unlocks dreamscapes, soundscapes, the live visual scenes and liquid dish, the full guided programs, and saving your own sessions and templates. No subscription, nothing renews. Restore it on any iPhone with the same Apple Account. PRIVATE BY DESIGN No account. No ads. No tracking. Everything above runs on your phone and works offline. Terms: https://frequencylab.app/terms.html Privacy: https://frequencylab.app/privacy.html Support: https://frequencylab.app/support.html