# RT vs Fish Mapping

The clearest difference is review sentiment: Fish Mapping at 50% against RT's 0%. Fish Mapping also leads on rating (3.7 vs 3.0) and in-app purchases (none vs 5). RT's advantage is chart position (#197 vs unranked). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. RT sells 5 one-off in-app purchases. Fish Mapping asks for nothing beyond the download.

Fish Mapping holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 8 and 3 respectively. Written reviews point the same way: 0% of RT's written reviews are positive against 50% of Fish Mapping's.

RT ships an update monthly, Fish Mapping every 3 weeks. The most recent releases landed on September 23, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | RT | Fish Mapping |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (8 ratings)](https://appshunter.io/ios/app/rt-nav/id586307815/reviews) | **[3.7 (3 ratings)](https://appshunter.io/ios/app/fish-mapping/id6450968706/reviews)** |
| Number of ratings | **8** | 3 |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | **Free with in-app purchases** | Subscription |
| Best chart rank | **#197** | — |
| Size | 13 MB | 57 MB |
| Requires iOS | 26.0 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hilton's Fishing Charts, L.L.C.](https://appshunter.io/developer/586307818) | [OceanBytes Holding LLC](https://appshunter.io/developer/1686599948) |

## What reviewers say

### RT

[App page](https://appshunter.io/ios/app/rt-nav/id586307815)

**Currently charting:** #197 Top Grossing · Navigation (US App Store)

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.

**Highlights:** Real-time oceanographic imagery, Waypoint creation and editing, Map zooming, Point-to-point navigation, Real-time GPS tracking, Offline navigation capabilities

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Day Subscription | $29.99 | one-time |
| 1 Week Subscription | $49.99 | one-time |
| 1 Month Subscription | $99.99 | one-time |
| 1 Year Subscription | $199.99 | one-time |
| One Year International | $199.99 | one-time |


### Fish Mapping

[App page](https://appshunter.io/ios/app/fish-mapping/id6450968706)

This app provides detailed fishing recommendations and environmental data to help anglers find the best spots for bait and game fish. It displays information like plankton strength, sea surface temperature, and ocean currents to optimize fishing trips.

**Highlights:** Fishing Recommendations, Weed Lines, Plankton Front Strength, Sea Surface Temperature, Sub-Surface Temperatures, Sea Surface Height Anomalies, Ocean Currents

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RT free?

RT is free to download, with in-app purchases available.

### Is Fish Mapping free?

Fish Mapping is free to download, with no in-app purchases.

### Which has better reviews, RT or Fish Mapping?

Fish Mapping is rated higher. RT averages 3.0 out of 5 from 8 ratings, while Fish Mapping averages 3.7 from 3 ratings.

### Do RT or Fish Mapping have ads?

Neither RT nor Fish Mapping shows ads.

### Which is updated more often, RT or Fish Mapping?

RT ships an update monthly, and Fish Mapping every 3 weeks. Most recently, RT was updated on September 23, 2026 and Fish Mapping on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*