Terrafin Mobile vs SaltWx
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Terrafin Mobile
Access detailed marine data, including sea surface temperature, chlorophyll, and currents, for fishing, diving, and research. Download charts for offline use and track your vessel's location in real-time.
- Offline chart downloads
- Real-time vessel tracking
- Latitude/Longitude/Temperature readings
- Mark waypoints
- Distance & Bearing calculations
- Sea Surface Temperature charts
- Chlorophyll/Ocean Color charts
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Terrafin has provided key satellite data online for anglers, divers, and researchers since 1998. Now, Terrafin Mobile gives subscribers easy access to this data from your iPhone or iPad. Note: The Terrafin Mobile app installs with an assortment of sample charts, that you can use to try the various features. Access to current data requires an active subscription to the Terrafin website, available @ $119/year. Terrafin Mobile Features: • Browse Terrafin website to easily select charts. • Charts are downloaded to device for use offline. • Tap and drag cursor for accurate positioning. • Latitude / Longitude / Temperature readings at cursor. • Mark waypoints. • Distance & Bearing to waypoint or cursor. • Real time vessel location and track displayed on chart (GPS enabled device required). Data available with Terrafin Mobile • Hi Res (1.1km) Sea Surface Temperature Charts, updated multiple times daily. • Hi Res (1.1km) Chlorophyll / Ocean Color Charts, updated daily. • Altimetry (Sea Surface Height) Charts, updated daily. • Geostrophic Currents Charts, updated daily. • CloudFree SST charts, updated daily. • LEO 1 Day Composite SST charts, updated daily. Areas of Coverage: • U.S. East, West, and Gulf Coasts • Alaska & Hawaii • Caribbean & Bermuda • Mexico, including Baja and Sea of Cortez • Central America (Pacific Coast) • Venezuela • Brazil • Australia East Coast • Northwest Africa SAVE FUEL – SAVE $$$ - CATCH MORE FISH!
SaltWx
This marine forecast app offers side-by-side comparisons of four leading weather models for enhanced accuracy. It provides hourly forecasts up to six days out, including ocean conditions like tides and sea surface temperature, along with trip planning tools.
- Four weather models side-by-side
- Hourly forecasts up to 6 days
- Ocean conditions (tides, SST, chlorophyll)
- Proprietary clutter-free basemap
- Satellite overlays (SST, Chlorophyll, Currents)
- Trip planning tools (waypoints, distance measure)
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SALTWEATHER SaltWeather is the ONLY marine forecast app that provides four of the most accurate weather forecast models SIDE-BY-SIDE. This allows you to compare the models to see if they are projecting similar weather. If the models are forecasting similar conditions, you can feel more confident that the forecast should be accurate, greatly increasing your go/no-go decisions for boating ventures. WEATHER FORECAST Weather forecasts are provided by four of the most accurate weather models available and are viewed side-by-side. Forecasts are available by the hour out to 6 days and provide information on sunrise/sunset, weather forecasts including air temperature, precipitation, wind speed and direction, wave height, direction and period. OCEAN CONDITIONS Ocean Conditions are provided by the GFS model and provide forecasts out to 6 days. Information provided include daily high and low tides, hourly tide height change, moon phase, phytoplankton density, chlorophyll-a concentration, and sea surface temperature. WEATHER MODELS Thanks to SaltWeather, subscribers are able to view, SIDE-BY-SIDE, hourly forecasts from four of the most accurate weather models. Models used in SaltWeather are ICON (German Weather Centre), GFS (NOAA), WWO (World Weather Center), and EURO (European Weather Centre). PROPRIETARY BASEMAP The developers at SaltWeather have created a custom basemap that gives everything you need without all of the clutters included in the NOAA navigation map. Our basemap provides ocean contours depths categorized by color making it easier to view depth changes. Our map is then topped off with detailed contours lines showing the depths. We made it easy to find the 20 and 30 fathom lines! SATELLITE OVERLAYS Our satellite overlay data are obtained from Copernicus Ocean Data Centre and updated daily. The three overlays available are: • Sea Surface Temperature • Chlorophyll-a Concentration • Ocean Currents FREE TRIP PLANNING TOOLS SaltWeather also provides free tools to help with your boating and sailing ventures. Tools provided include Favorite Waypoints, Distance measuring and GPS coordinate Converter. LIST OF PREMIUM WEATHER PARAMETERS- PAID CONTENT Our premium subscription provides a tremendous amount of valuable information to aid in your offshore trips. Forecast parameters in the subscription include: Hourly weather and ocean condition forecasts out to 6 days • Tides • Phytoplankton • Moon phase • Chlorophyll- concentrations • Sea surface temperatures • Air temperature • Precipitation • Wind forecasts • Wave forecasts • Satellite overlays BILLING - SUBSCRIPTIONS • SaltWx Premium subscription is billed annually at the rate corresponding to the selected plan. • Payment will be charged to iTunes Account at confirmation of purchase. • Premium subscriptions DO NOT auto-renew annually. Customers may renew their subscriptions at the end of each annual term. • Communication emails will be sent 7 days prior to the expiration of subscriptions. • Accounts will be charged for renewal when the customer selects the renew option. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. CONTACT US Follow us on social media • Facebook: https://www.facebook.com/SaltWeather • Instagram: https://www.instagram.com/saltwx/ • YouTube: https://www.youtube.com/@saltweather4793 • Visit our website on: https://www.saltwx.com We welcome feedback on our product. Submit questions or comments to our customer service team at: info@saltwx.com TERMS OF USE https://saltwx.com/phase/termsofuse.html -Privacy Policy https://saltwx.com/phase/policy.html
Screenshots
Verdict
Terrafin Mobile and SaltWx both sit at 5.0 stars, but that hides the real split: 100% of SaltWx's written reviews are positive against 36% of Terrafin Mobile's. SaltWx also leads on monetization model (free with in-app purchases vs subscription) and ratings volume (4 vs 1). Terrafin Mobile's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 11 months). On price, rating, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Terrafin Mobile sells 1 one-off in-app purchase and SaltWx sells 5 in-app purchases, starting at $39.99 per year. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Terrafin Mobile against 5.0 for SaltWx. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews are what separate them: 36% of Terrafin Mobile's written reviews are positive against 100% of SaltWx's.
Terrafin Mobile ships an update every 6 weeks, SaltWx every 11 months. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.
| Parameter | Terrafin Mobile | SaltWx |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (4 ratings) |
| Positive reviews | 36.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 6 weeks — better | Every 11 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Best chart rank | #159 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 47 MB | 49 MB |
| Age rating | 4+ | 9+ |
| Developer | Terrafin Satellite Imaging | Piedmont Solutions, LLC |
Customer experience
Terrafin Mobile
SaltWx
In-app purchases
Terrafin Mobile
- Terrafin Membership 12 Months$119.00
SaltWx
- Yearly Subscriptions$39.991 Year
- Start 1 Year Subscription$39.991 Year
- Start 1 Year Subscription$42.491 Year
- Yearly Subscription$39.99
- Yearly Subscription$42.49
Questions
Is Terrafin Mobile free?
Is SaltWx free?
Which has better reviews, Terrafin Mobile or SaltWx?
Do Terrafin Mobile or SaltWx have ads?
Which is updated more often, Terrafin Mobile or SaltWx?
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