# NV Charts GPS Navigation AIS vs SkunkTracker

The clearest difference is in-app purchases: SkunkTracker at none against NV Charts GPS Navigation AIS's 14. NV Charts GPS Navigation AIS's advantage is update cadence (every 3 weeks vs every 3 months) and rating (4.5 vs 4.2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. NV Charts GPS Navigation AIS sells 14 in-app purchases, starting at $49.99 per year. SkunkTracker asks for nothing beyond the download.

NV Charts GPS Navigation AIS holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: NV Charts GPS Navigation AIS has 115 ratings behind it against 6, so its average is the more settled of the two.

NV Charts GPS Navigation AIS ships an update every 3 weeks, SkunkTracker every 3 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | NV Charts GPS Navigation AIS | SkunkTracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (115 ratings)](https://appshunter.io/ios/app/nv-charts-gps-navigation-ais/id659569095/reviews)** | [4.2 (6 ratings)](https://appshunter.io/ios/app/skunktracker/id1083759544/reviews) |
| Number of ratings | **115** | 6 |
| Positive reviews | 54.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 78 MB | 2 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NV Chart Group GmbH](https://appshunter.io/developer/659569098) | [Mobile Geographics](https://appshunter.io/developer/286844996) |

## What reviewers say

### NV Charts GPS Navigation AIS

[App page](https://appshunter.io/ios/app/nv-charts-gps-navigation-ais/id659569095)

This app provides digital nautical charts and navigation tools for safe boating. It offers offline chart downloads, real-time AIS tracking, and community-shared points of interest. Plan and share your routes with ease.

**Highlights:** Digital nautical charts, Offline chart downloads, Real-time AIS tracking, Community points of interest, Auto-routing, GPX file export

**Features:** Family Sharing, Vision Pro support

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Baltic Sea and Kattegat | $49.99 | per year |
| Norway | $49.99 | per year |
| Netherlands | $49.99 | per year |
| Mediterranean West | $49.99 | per year |
| Mediterranean East | $49.99 | per year |
| France Atlantik | $49.99 | per year |
| Cuba | $49.99 | per year |
| Croatia | $49.99 | per year |
| Caribbean and Bermuda | $49.99 | per year |
| Atlantic Islands | $49.99 | per year |
| Florida and Bahamas | $49.99 | per year |
| German Inland Waters | $49.99 | per year |
| UK South | $49.99 | per year |
| Northsea | $49.99 | per year |


### SkunkTracker

[App page](https://appshunter.io/ios/app/skunktracker/id1083759544)

This app provides live, updating maps of ships and boats using AIS data. It connects to your AIS receivers or public network feeds to display vessel locations. Requires an AIS radio or access to an AIS data feed to function.

**Highlights:** Live AIS data display, Map visualization of vessels, Supports WiFi AIS receivers, Integrates with public AIS feeds, Real-time vessel location updates

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NV Charts GPS Navigation AIS free?

NV Charts GPS Navigation AIS is free to download, with in-app purchases available.

### Is SkunkTracker free?

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

### Which has better reviews, NV Charts GPS Navigation AIS or SkunkTracker?

NV Charts GPS Navigation AIS is rated higher. NV Charts GPS Navigation AIS averages 4.5 out of 5 from 115 ratings, while SkunkTracker averages 4.2 from 6 ratings.

### Do NV Charts GPS Navigation AIS or SkunkTracker have ads?

Neither NV Charts GPS Navigation AIS nor SkunkTracker shows ads.

### Which is updated more often, NV Charts GPS Navigation AIS or SkunkTracker?

NV Charts GPS Navigation AIS ships an update every 3 weeks, and SkunkTracker every 3 months. Most recently, NV Charts GPS Navigation AIS was updated on October 26, 2026 and SkunkTracker 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.*