SonaVyx vs REW (Room EQ Wizard): 2026 Comparison
Room EQ Wizard (REW) is the most popular free acoustic measurement software, used by home theater enthusiasts, studio builders, and audio professionals worldwide. It offers deep EQ optimization features, especially for room correction. SonaVyx takes a different approach with browser-based access, AI-powered diagnostics, and guided workflows. Here is how they compare.
Feature Comparison
| Feature | SonaVyx | REW |
|---|---|---|
| Platform | Any browser (desktop, mobile, tablet) | Windows, macOS, Linux (Java) |
| Price | Free (Pro tier available) | Free (donation-supported) |
| Installation | None required — open URL | Java + installer |
| Real-Time Analyzer | Yes (1/1 to 1/24 octave, spectrograph) | Yes (1/1 to 1/48 octave) |
| Transfer Function | Yes (H1, coherence, phase) | Yes (SPL, phase, GD, coherence) |
| Impulse Response | Yes (log sweep + MLS) | Yes (sweep) |
| RT60 / Reverberation | Yes (T20, T30, EDT per ISO 3382) | Yes (T20, T30, EDT, Topt) |
| SPL Meter | Yes (IEC 61672, A/C/Z, percentiles) | Yes (basic SPL) |
| STI / Speech Intelligibility | Yes (STIPA per IEC 60268-16) | No |
| Parametric EQ Optimization | Basic (12-band drag editor) | Advanced (auto-EQ, target matching) |
| House Curve Targets | Yes (12 presets including X-Curve) | Yes (customizable target curves) |
| AI Diagnostics | Yes (health score, recommendations) | No |
| Equipment Recognition | Yes (camera-based AI scan) | No |
| Guided Workflows | Yes (5 step-by-step wizards) | No (manual process) |
| Mobile Support | Yes (PWA, any device) | No (desktop only) |
| Multi-Device Measurement | Yes (WebSocket pairing) | No |
| Noise Dose / OSHA | Yes | No |
| Sound Insulation | Yes (ISO 717-1, STC) | No |
| Report Generation | Yes (3 templates, certificates) | No (screenshot-based) |
| Waterfall / Spectrogram | Yes (live spectrograph) | Yes (offline waterfall) |
| Export Formats | CSV, FRD, WAV, JSON | TXT, FRD, WAV, ZMA, image |
When to Choose REW
REW is the gold standard for room EQ optimization. Its automatic EQ matching, parametric filter generation, and deep filter export capabilities (to miniDSP, Dirac, etc.) are unmatched. If your primary goal is room correction for a home theater or studio, REW's EQ engine is more powerful. REW also offers waterfall (CSD) analysis for decay visualization.
When to Choose SonaVyx
SonaVyx is the better choice for live sound engineers, system integrators, and consultants who need on-site measurement without carrying a laptop. The browser-based architecture means instant access from any device. AI diagnostics provide actionable recommendations in seconds, guided workflows prevent measurement mistakes, and professional report generation saves hours. For standards-compliant STI, noise dose, or sound insulation measurements, SonaVyx covers territory REW does not address.
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