# app4sail lite vs SkunkTracker

The clearest difference is rating: SkunkTracker at 4.2 against app4sail lite's 1.0. SkunkTracker also leads on ratings volume (6 vs 1). app4sail lite's advantage is iOS requirement (12.0 vs 16.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SkunkTracker holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: SkunkTracker has 6 ratings behind it against 1, so its average is the more settled of the two.

app4sail lite ships an update every 4 months, SkunkTracker every 3 months. The most recent releases landed on September 10, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | app4sail lite | SkunkTracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/app4sail-lite/id641322268/reviews) | **[4.2 (6 ratings)](https://appshunter.io/ios/app/skunktracker/id1083759544/reviews)** |
| Number of ratings | 1 | **6** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 9 MB | 2 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [anton van oosten](https://appshunter.io/developer/641322651) | [Mobile Geographics](https://appshunter.io/developer/286844996) |

## What reviewers say

### app4sail lite

[App page](https://appshunter.io/ios/app/app4sail-lite/id641322268)

This nautical navigation application utilizes free S57 vector charts for charting. It provides essential navigation tools for mariners on iOS devices.

**Highlights:** S57 nautical vector charts, Free chart usage, Nautical navigation, iOS compatible

**Features:** macOS Compatibility

**In-app purchases:** none


### 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

**In-app purchases:** none


## Frequently asked questions

### Is app4sail lite free?

app4sail lite is free to download, with no in-app purchases.

### Is SkunkTracker free?

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

### Which has better reviews, app4sail lite or SkunkTracker?

SkunkTracker is rated higher. app4sail lite averages 1.0 out of 5 from 1 ratings, while SkunkTracker averages 4.2 from 6 ratings.

### Do app4sail lite or SkunkTracker have ads?

Neither app4sail lite nor SkunkTracker shows ads.

### Which is updated more often, app4sail lite or SkunkTracker?

app4sail lite ships an update every 4 months, and SkunkTracker every 3 months. Most recently, app4sail lite was updated on September 10, 2026 and SkunkTracker on September 15, 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.*