# NavNet vs Fish Mapping

The clearest difference is rating: Fish Mapping at 4.0 against NavNet's 2.8. Fish Mapping also leads on update cadence (every 3 weeks vs every 5 months) and review sentiment (50% vs 33%). NavNet's advantage is in-app purchases (none vs 3) and iOS requirement (8.0 vs 15.1). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Fish Mapping sells 3 in-app purchases, starting at $199.00 per year. NavNet asks for nothing beyond the download.

Fish Mapping holds the better App Store score, 4.0 against 2.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 33% of NavNet's written reviews are positive against 50% of Fish Mapping's.

NavNet ships an update every 5 months, Fish Mapping every 3 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | NavNet | Fish Mapping |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (4 ratings)](https://appshunter.io/ios/app/navnet-viewer/id502473092/reviews) | **[4.0 (4 ratings)](https://appshunter.io/ios/app/fish-mapping/id6450968706/reviews)** |
| Number of ratings | 4 | 4 |
| Positive reviews | 33.3% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | **Free** | Subscription |
| Size | 20 MB | 128 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [株式会社フルノソフテック](https://appshunter.io/developer/1015812767) | [OceanBytes Holding LLC](https://appshunter.io/developer/1686599948) |

## What reviewers say

### NavNet

[App page](https://appshunter.io/ios/app/navnet-viewer/id502473092)

Access your Furuno NavNet TZtouch series navigation data and fish finder images remotely on your iOS devices. Connect your iPhone, iPad, or iPod to your onboard system for convenient viewing.

**Highlights:** Remote navigation data viewing, Fish finder image streaming, iOS device connectivity, Works with NavNet TZtouch series

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Mobile | $199.00 | per year |
| Annual Mobile + Desktop | $299.00 | per year |
| 1-Week Mobile + Desktop | $24.99 | one-time |


## Frequently asked questions

### Is NavNet free?

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

### Is Fish Mapping free?

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

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

Fish Mapping is rated higher. NavNet averages 2.8 out of 5 from 4 ratings, while Fish Mapping averages 4.0 from 4 ratings.

### Do NavNet or Fish Mapping have ads?

Neither NavNet nor Fish Mapping shows ads.

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

NavNet ships an update every 5 months, and Fish Mapping every 3 weeks. Most recently, NavNet was updated on October 24, 2026 and Fish Mapping on October 27, 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.*