app4sail lite vs SkunkTracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
app4sail lite
This nautical navigation application utilizes free S57 vector charts for charting. It provides essential navigation tools for mariners on iOS devices.
- S57 nautical vector charts
- Free chart usage
- Nautical navigation
- iOS compatible
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nautical navigation app. Uses free S57 nautical vector charts
SkunkTracker
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.
- Live AIS data display
- Map visualization of vessels
- Supports WiFi AIS receivers
- Integrates with public AIS feeds
- Real-time vessel location updates
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SkunkTracker displays live, updating maps of ships and boats. It uses AIS data streams received over WiFi, either from your own dedicated AIS receivers or from public network feeds such as AISHub.net and MarineTraffic.com. AIS (Automatic Identification System) transponders are carried by all large ships, all passenger vessels, and many recreational boats. Note: you need an AIS radio, or access to a public or private AIS feed, to use SkunkTracker. Your boat's AIS transponder may have a network interface already, and if you can connect to the same network you can use that radio. Your radio can be connected via WiFi or via cellular data. If your radio doesn't have a network connection, we recommend a WiFi-RS232 converter, such as the Global Cache WF2SL or the Grid Connect RN370.
Screenshots
Verdict
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.
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. 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.
| Parameter | app4sail lite | SkunkTracker |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 4.2 (6 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 4 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 9 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | anton van oosten | Mobile Geographics |
Customer experience
app4sail lite
SkunkTracker
In-app purchases
app4sail lite
No in-app purchases
SkunkTracker
No in-app purchases
