MuirWave
Underwater Acoustic Prediction
Free · In‑App Purchases
Native underwater acoustic propagation prediction for iPad, iPhone and Mac. Built for marine acousticians, surveyors, MMOs, researchers and sailors.
MuirWave is a native app for iPad, iPhone and Mac for underwater acoustic propagation prediction. Drop a pin anywhere in the world ocean, set your source and receiver geometry, and see how sound travels through the water column — ray paths, transmission loss, depth excess, signal excess, ambient noise floor — computed on-device from textbook acoustic physics and bundled public-domain ocean data.
Designed for civilian marine-acoustic work: environmental impact-assessment consultancies, hydrographic and oceanographic survey crews, marine-mammal observers and PAM operators, academic researchers, and technically-inclined commercial and recreational sailors.
— Bundled global ocean data —
The app ships with full global-coverage data ready to use offline:
• GEBCO 2025 sub-ice bathymetry at 5 arc-minute resolution
• World Ocean Atlas 2023 climatology at 1° "Compact" resolution (24 depth levels)
• Dutkiewicz seabed sediment classification
• Halpern shipping-density layer for ambient-noise modelling
All of the above is free — no account, no subscription. Open the app, drop a pin, see your prediction. Your projects sync across your devices via iCloud, also free.
— MuirWave Live: real-ocean conditions (subscription, 7-day free trial) —
Upgrade the climatology to the real ocean. MuirWave Live streams operational HYCOM nowcast/forecast sound-speed profiles, GFS wind, waves and sea state, and depth-resolved ocean currents to your pin — plus downloadable 0.25° regional operating-area packs (24- and 72-depth tiers) so the same high-resolution data works offshore, offline. Annual or monthly; every new subscription starts with a 7-day free trial.
— MuirWave Pro: professional deliverables (one-time purchase) —
For consultants and survey leads: marine-mammal impact ranges with NMFS-OPR-71 (2024) thresholds, mitigation planning, and clean, un-watermarked PDF deliverables — the formal EIA report, the impact-methodology document, and the brief sheet. Buy once, keep forever.
— Open, traceable physics —
Every line of the prediction stack is traceable to its public-domain or permissively-licensed source:
• Sound speed — Mackenzie 1981 nine-term equation
• Absorption — Francois & Garrison 1982
• Bottom loss — Hamilton 1980
• Ambient noise — Wenz 1962
• Propagation theory — Jensen, Kuperman, Porter & Schmidt, "Computational Ocean Acoustics"
No GPL or proprietary modelling code is bundled. The full provenance trail is published at muirwave.com/provenance.
— Built for the field, on all your Apple devices —
• A native interface designed for the dark conditions of shipboard and field use — on the iPad at the rail, the iPhone in your pocket, the Mac at your desk
• Works fully offline once installed; no cloud account needed
• Live ocean conditions (HYCOM nowcast / forecast) are an optional toggle
• Maritime-traditional units (feet, fathoms, nautical miles, DMS lat/lon) are first-class; metric and MGRS are one tap away
— Privacy —
No analytics, no advertising, no tracking, no account, no personal data. Settings, scenarios, and downloaded packs stay on your device.
Terms of Use: https://muirwave.com/terms
Privacy Policy: https://muirwave.com/privacy
— What's next —
Future updates will add marine-mammal hearing-weighting curves (NMFS 2018), additional source models for EIA work, and further export and reporting features. Roadmap and release notes published on muirwave.com.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
NEW — IMPACT ASSESSMENT REPORT (PRO)
A client-ready marine mammal impact assessment: governing ranges summary, per-hearing-group criteria, auditory weighting curves, source spectrum and TL-vs-range figures, and maps carrying scale bars, north arrows and drawn mitigation zones.
Three new export formats join the PDF (Pro): Data (CSV), GIS (GeoJSON) and Figure (PNG) — isopleths drop straight into your own GIS or report document.
Expanded criteria: TTS ranges alongside injury (NMFS 2024 and Southall 2019), the NMFS 2005 Level B behavioural line, fish TTS from Popper et al., and a 0 / 6 / 10 / 15 dB attenuation sensitivity table. Fleeing and stationary receivers now sit side by side.
Reports, data and figures now live in one Export sheet, reachable from either panel group.
FIXED
• Fleeing-receiver ranges corrected — the fleeing model now applies the impulsive to non-impulsive transition, which had been over-predicting those ranges.
• Project renames now reach your other devices promptly, and the Projects page shows live sync status. A save that fails now tells you instead of quietly reverting later.
• Prices no longer stick on "Fetching price…" when the App Store is slow to answer.
• Environment summaries on the rail, dock and pinned chips follow the probe instead of staying on the scenario pin.
• A wide pass of layout fixes across iPhone and iPad: text no longer truncates in the top bar, rail tiles, map readouts or Settings, and the export sheets fit properly on an iPad mini.
The developer, Jesse Webber, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jesse Webber
- Size
- 151.6 MB
- Category
- Navigation
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Large Tip $24.99
- Medium Tip $9.99
- Small Tip $2.99
- MuirWave Pro $299.00
- MuirWave Live (Monthly) $12.99
- MuirWave Live (Annual) $99.00
- Copyright
- © 2026 Jesse Webber
