# Wärtsilä iSailor vs Seapilot

The clearest difference is update cadence: Wärtsilä iSailor at every 3 weeks against Seapilot's every 3 months. Wärtsilä iSailor also leads on rating (3.1 vs 2.9) and chart position (#175 vs unranked). Seapilot's advantage is iOS requirement (9.3 vs 13). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Wärtsilä iSailor sells 13 in-app purchases, starting at $4.99 per year and Seapilot sells 18 in-app purchases, starting at $8.99 per year. Whichever you choose, the download price is not the number that matters.

Wärtsilä iSailor holds the better App Store score, 3.1 against 2.9. Both are backed by a comparable volume of ratings — 11 and 15 respectively. Written reviews point the same way: 45% of Wärtsilä iSailor's written reviews are positive against 38% of Seapilot's.

Wärtsilä iSailor ships an update every 3 weeks, Seapilot every 3 months. The most recent releases landed on September 23, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Wärtsilä iSailor | Seapilot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (11 ratings)](https://appshunter.io/ios/app/wartsila-isailor/id398456162/reviews)** | [2.9 (15 ratings)](https://appshunter.io/ios/app/seapilot/id915818783/reviews) |
| Number of ratings | 11 | **15** |
| Positive reviews | **44.8% of reviews** | 38.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#175** | — |
| Size | 55 MB | 107 MB |
| Requires iOS | 13 | **9.3** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wartsila Voyage Sweden AB](https://appshunter.io/developer/398456165) | [Seapilot](https://appshunter.io/developer/449148590) |

## What reviewers say

### Wärtsilä iSailor

[App page](https://appshunter.io/ios/app/wartsila-isailor/id398456162)

**Currently charting:** #175 Top Grossing · Navigation (US App Store)

This marine navigation app offers clear presentation of navigational information and electronic charts for amateur seafarers. It supports accurate TX-97 vector charts and provides various optional services like weather and AIS data.

**Highlights:** Electronic chart display, GPS and AIS integration, Route creation and monitoring, Weather and tide information, Chart correction service, User object sharing

**Features:** Apple Watch app

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| USA. Pacific Coast. CA | $4.99 | per year |
| USA. Ri to the Canadian border | $4.99 | per year |
| USA.  Nantucket to Cap May, NJ | $4.99 | per year |
| USA.Chesapeake & Delaware bays | $4.99 | per year |
| USA. Norfolk to Jacksonville | $4.99 | per year |
| USA. Atlantic Coast. Florida | $4.99 | per year |
| USA. Gulf Coast. Florida | $4.99 | per year |
| USA. Pacific Coast. WA | $4.99 | per year |
| The Bahamas | $10.49 | per year |
| Caribbean Sea. Lesser Antilles | $10.99 | per year |
| AIS Receiver Support | $11.99 | one-time |
| Tides & Currents subscription | $11.99 | one-time |
| Internet AIS Service 1 year subscription | $19.49 | one-time |

**What reviewers like**

- ✨ Excellent app for navigation
- 🗺️ Accurate and detailed charts
- 💰 Good value for money
- 🛳️ Reliable for offshore sailing
- 🔍 Helpful features like anchor alarm

**What reviewers complain about**

- 🐛 Crashes and bugs after updates
- 🔄 Issues with restoring purchased charts
- 💰 Expensive subscription model for chart updates
- 🗺️ Missing or incomplete chart data in some regions
- 🔧 Poor customer support and lack of communication

**Reported bugs**

- GPS position issues on iOS devices
- NMEA data not working after updates
- Inability to scroll past the date line
- Purchased charts not downloading properly

**Requested features**

- Automatic route planning
- Integration with boat's autopilot
- Improved weather and tidal data
- Cross-platform sync for user data
- Better AIS target display and management


### Seapilot

[App page](https://appshunter.io/ios/app/seapilot/id915818783)

Navigate like a professional with this marine navigation app. It offers vectorized chart data, AIS, and weather forecasts, bringing merchant shipping technology to your mobile device. Plan trips, track your vessel, and access advanced navigation tools.

**Highlights:** Vectorized S-57 chart data, Automatic Identification System (AIS), Built-in weather forecasts, Positioning and background positioning via GPS, Man Overboard function, Premium features like Weather Routing

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

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Swedish charts with automatic updates | $8.99 | per year |
| East Canadian charts | $14.49 | per year |
| West Canadian | $14.49 | per year |
| Spanish charts with automatic updates | $17.49 | per year |
| Finnish charts | $19.49 | per year |
| Dutch charts | $19.49 | per year |
| Irish charts | $19.49 | per year |
| British charts | $19.49 | per year |
| German charts | $23.49 | per year |
| Croatian charts with automatic updates | $26.49 | per year |
| Portuguese charts with automatic updates | $26.49 | per year |
| Greek charts with automatic updates | $34.99 | per year |
| Premium | $39.99 | per year |
| French charts | $50.99 | per year |
| US East | Free | one-time |
| US West | Free | one-time |
| US-Great Lakes. One year subscription. | $11.99 | one-time |
| US-West. One year subscription. | $13.99 | one-time |


## Frequently asked questions

### Is Wärtsilä iSailor free?

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

### Is Seapilot free?

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

### Which has better reviews, Wärtsilä iSailor or Seapilot?

Wärtsilä iSailor is rated higher. Wärtsilä iSailor averages 3.1 out of 5 from 11 ratings, while Seapilot averages 2.9 from 15 ratings.

### Do Wärtsilä iSailor or Seapilot have ads?

Neither Wärtsilä iSailor nor Seapilot shows ads.

### Which is updated more often, Wärtsilä iSailor or Seapilot?

Wärtsilä iSailor ships an update every 3 weeks, and Seapilot every 3 months. Most recently, Wärtsilä iSailor was updated on September 23, 2026 and Seapilot on September 11, 2026.

---

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