RT vs SeaSat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RT
Navigate using real-time oceanographic data like sea surface temperatures and currents on your mobile device. Create and edit waypoints, zoom maps, and track your GPS location for point-to-point navigation. Access dynamic maps even without cell service.
- Real-time oceanographic imagery
- Waypoint creation and editing
- Map zooming
- Point-to-point navigation
- Real-time GPS tracking
- Offline navigation capabilities
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Hilton's Realtime-Navigator Mobile Navigation Application. Navigate on almost real-time imageries such as sea surface temperatures, chlorophyll, surface currents, altimetry, and salinity using your iPad, iPhone, and/or iPod device(s) as your chartplotter! Features include: -Ability to create waypoints/routes "On the fly" -Waypoint creation and editing -Map zooming -Point to point navigation -Real-time GPS location -Ability to change chart selection "On the fly" The RT-Nav app interfaces with the RT-Nav.com website to provide a platform to allow subscribers the ability to navigate on desired RT-Nav.com images using youriPad, iPhone, and/or iPod device(s) as a chartplotter. View your real-time position on dynamic maps outside of cell/internet range navigating to temp breaks (probable weedlines), color changes, or default/custom waypoints by using our touch-screen technology!
SeaSat
Access near real-time data on Sea Surface Temperature, water transparency, and chlorophyll concentration directly on your smartphone. This application provides essential environmental information for users interested in marine conditions.
- Sea Surface Temperature data
- Water transparency information
- Chlorophyll concentration readings
- Near real-time updates
- Smartphone accessibility
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SeaSat provides near real time Sea Surface Temperature, Water transparency and Chlorophyll concentration to smartphone users.
Screenshots
Verdict
The clearest difference is rating: RT at 3.0 against SeaSat's 1.0. RT also leads on update cadence (monthly vs every 8 months) and ratings volume (8 vs 2). SeaSat's advantage is in-app purchases (none vs 5) and iOS requirement (8.0 vs 26.0). On price, review sentiment, ads 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. RT sells 5 one-off in-app purchases. SeaSat asks for nothing beyond the download.
RT holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews split almost evenly too, at 0% and 0% positive.
RT ships an update monthly, SeaSat every 8 months. The most recent releases landed on September 23, 2026 and September 25, 2026 respectively.
| Parameter | RT | SeaSat |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (8 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 8 — better | 2 |
| Update frequency | Monthly — better | Every 8 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Hilton's Fishing Charts, L.L.C. | Proambiente SCRL |
Customer experience
RT
SeaSat
In-app purchases
RT
- 1 Day Subscription$29.99
- 1 Week Subscription$49.99
- 1 Month Subscription$99.99
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- 1 Year Subscription$199.99
- One Year International$199.99
SeaSat
No in-app purchases
