Kaptan vs SaltWx
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kaptan
This app provides real-time and predicted sea conditions for the Malta-Sicily Channel. It utilizes HF radar, satellite data, and numerical models for accurate information.
- HF radar operational data
- Satellite data integration
- Numerical model predictions
- Present sea conditions
- Predicted sea conditions
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KAPTAN is an application developed by the Physical Oceanography Research Group, Dept. of Geosciences, University of Malta, as part of the CALYPSO FO project. It uses HF radar operational data, satellite data and numerical models to provide information on the present and predicted sea conditions in the Malta-Sicily Channel. The smartphone app was developed by Think Ltd. Disclaimer: The Physical Oceanography Research Group makes every effort to ensure that information contained in this smartphone application is accurate and up to date. However, the Physical Oceanography Research Group accepts no liability and/or responsibility for the reliance placed by the users of this application on the information contained in this application or any other information accessed via this application. The information provided in this application is provided on an "as is" basis and no warranties of any kind are issued whether expressly or implied by the Physical Oceanography Research Group on the information provided. Project Coordination and Concept: Prof. Aldo Drago, University of Malta (Email: aldo.drago@um.edu.mt; Tel: 21440972)
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
The clearest difference is in-app purchases: Kaptan at none against SaltWx's 5. Kaptan also leads on ads (none vs shown) and update cadence (weekly vs every 11 months). SaltWx's advantage is iOS requirement (12.0 vs 15.0). On price, review sentiment 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. SaltWx sells 5 in-app purchases, starting at $39.99 per year. Kaptan asks for nothing beyond the download.
Kaptan ships an update weekly, SaltWx every 11 months. The most recent releases landed on September 28, 2026 and October 4, 2026 respectively.
| Parameter | Kaptan | SaltWx |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Weekly — better | Every 11 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 49 MB |
| Age rating | 4+ | 9+ |
| Developer | Think Design Limited | Piedmont Solutions, LLC |
Customer experience
Kaptan
SaltWx
In-app purchases
Kaptan
No in-app purchases
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









