Audio Analyzer vs SWAY

The analyzed result of the waveform is rendered at 60FPS.
The following 4 functions can be accessed: Waveform visualizer (oscilloscope) Spectrum analyzer Historical peak Historical FFT Tapping each function enters into full-screen mode and tapping once more exits full-screen mode. Horizontal zoom is only available for the spectrum analyzer.
Magnification gesture (aka pinching) allows for zooming in and out, and frequency offset can be performed by swiping on the screen horizontally. Vertical swiping adjusts input volume.
Coefficients are displayed in the corner. 
*dBFullScale
20 * log10 ( input) A demonstration is here. https://www.youtube.com/watch?v=6mDa_zCgYzE

Move the sound. SWAY is a synthesized rhythm instrument for iPhone and iPad. Build patterns, shape sounds, and perform with touch and motion. • 16 synthesized tracks and four patterns. • Independent track lengths from 1 to 16 steps for shifting rhythms. • Per-step parameter locks, live recording, and swipe-to-paint sequencing. • Live pads, track mutes and solo. • Eight momentary punch-in effects: Repeat, Filter, Brake, Echo, Reverse, Crush, Gate and Pitch. Stack effects with multi-touch and release each pad to restore the sound. • Hold TRIG / YES for temporary rhythmic fills, with slide-controlled density. • Three independent LFOs per track with synthesis and effect destinations. • Independent track effects and a shared effects bus: delay, reverb, DJ filter and tape loops. • Vinyl texture with warmth, drift and dust. • MIDI input and output, including Bluetooth MIDI connections to compatible hardware and virtual MIDI routing to other music apps. • Per-track MIDI channels, notes and gate lengths, with per-step Note and Gate locks. Choose internal sound, MIDI output, or both for each track. • Keep performing across apps with background playback when MIDI is enabled. • Bind a display parameter to device motion, then rotate your device to play it. • Export stereo WAV or MP3, or aligned WAV stems for your DAW. • Save and delete projects locally, and import or export editable project files. • A portrait instrument on iPhone and a wide landscape console on iPad. Sound generation and project storage work locally. Bluetooth MIDI requires a compatible device or adapter.