Welcome to Audiophilio
The complete audiophile toolkit — measurement tools, room design, and system planning, all in one app.
Measurement Tools
- SPL Meter with A, B, C, and Z weighting filters, peak and min hold, session recording with CSV export, and level trim calibration workflow
- Support for calibrated external microphones via REW/MiniDSP .cal files; level trim workflow for device-specific offset correction
- Real-Time Analyzer (RTA) with selectable octave bands and live frequency spectrum display
- Oscilloscope — live triggered waveform display with adjustable time scale (1–50 ms/div) and gain (¼× to 4×); rising zero-crossing trigger locks the trace on periodic signals
- Energy Time Curve (ETC) — room impulse response via Farina log sweep and Wiener FFT deconvolution; direct sound and ITDG (first reflection) annotated on a 0–300 ms plot
- Waterfall Plot — time-frequency decay visualization; 31-band ISO 1/3-octave heat map
- Spectrogram — 2D real-time frequency map for spotting resonances and flutter echo
- LUFS Meter — broadcast-standard integrated loudness measurement per EBU R 128 / BS.1770-4; streaming platform reference targets displayed inline
- Frequency Response & PEQ — log-sweep room and speaker magnitude curve measurement; automated parametric EQ filter suggestions (up to 20 bands) correcting toward Flat, Harman, House Curve, or a custom imported target; export filters in REW / Generic, MiniDSP biquad, or Equalizer APO format; overlay multiple saved measurements for before/after comparison
- RT60 Measurement — per-octave-band reverberation time via log sweep
- Channel Balance — L/R level and timing offset measurement
- Impedance Analyzer — speaker impedance curve with Fs and resonance peak detection
- THD+N Analyzer — harmonic distortion measurement via frequency sweep
- Delay Finder — arrival time offset measurement between speakers
- Polarity Checker — verify absolute polarity of any driver or system
Room Designer
- Interactive 3D and 2D top-down room canvas with drag-to-position elements
- LiDAR Room Scan — automatically capture room dimensions, doors, and windows using your device's LiDAR sensor (iPhone 12 Pro and later, iPad Pro 2020 and later); choose Full Scan (room + openings) or Architecture Only mode
- Full element library: speakers, subwoofers, tower speakers, listening chair, sofa, coffee table, bookshelf, bed, fireplace, and stairs
- Windows and doors default to a 1-inch thickness for a cleaner, more realistic plan view
- Acoustic Heat Map overlay showing standing wave pressure distribution
- First Reflection Analysis showing early reflection points for each speaker
- Toe-in Arc visualization for speaker aim and sweet spot alignment
- Room Modes labels showing axial, tangential, and oblique mode frequencies
- Snap-to-grid editing with configurable grid sizes
- Live wall-distance measurements while dragging elements
- Acoustic score badge summarizing room treatment quality
- Room snapshot export and sharing
System Builder
- Visual signal chain diagram from sources through processing, amplification, and output
- Export signal chain diagram as PNG, JPEG, PDF, CSV, JSON, or Markdown — tap a format and the share sheet opens immediately
- Component library with brand, model, and notes fields
- Diagonal arrow routing when multiple sources connect to a single destination
- Component detail view with connection management
- System stats bar showing component count and estimated value
Sync & Community
- iCloud sync for rooms and systems across all your Apple devices via CloudKit, including background sync via silent push notifications
- Community feed to discover and share room layouts and system builds
- Public profile with display name and avatar
- One-tap publish and un-publish for any room or system
Generators & Calculators (Free)
- Noise Generator — white, pink, and brown noise for burn-in and acoustic testing
- Room Modes Calculator — axial and tangential resonances from room dimensions
- RT60 Calculator — reverberation time via Sabine formula
- SBIR Calculator — speaker boundary interference response
- First Reflection Point Calculator — optimal acoustic panel placement
- Schroeder Frequency Calculator — modal vs. statistical acoustics boundary
- Crossover Calculator, dB Converter, Ohm's Law Calculator, Cartridge Resonance, Speaker Distance Calculator
Platform
- Universal app — iPhone, iPad, and Mac (Apple Silicon)
- Built with SwiftUI, SwiftData, SceneKit, and CloudKit
- No account required — sign in with your existing Apple ID for iCloud features
- Free with one-time Premium unlock — no subscriptions, no ads