# Wärtsilä iSailor — World's leading sailing app

> Easy-to-use marine and river navigation app with electronic charts for amateur seafarers. (iPhone/iPad app by Wartsila Voyage Sweden AB.)

- Source: https://appshunter.io/ios/app/wartsila-isailor/id398456162 (this page in markdown: same URL + `.md`)
- Developer: [Wartsila Voyage Sweden AB](https://appshunter.io/developer/398456165)
- Category: Navigation, Travel
- Price: Free with in-app purchases
- Rating: 3.10/5 from 11 App Store ratings · 375 written reviews indexed
- Age rating: 4+
- Requires: iOS 13 · 55 MB
- Languages: American English, Danish, French (France), German (Germany), Italian, Japanese, Korean, European Portuguese, Russian, Chinese (Simplified, China) and 2 more
- Released: 2010-12-15
- Data updated: 2026-08-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/wartsila-isailor/id398456162/reviews.md

## What is Wärtsilä iSailor?

Wärtsilä iSailor is an easy-to-use marine and river navigation application for amateur seafarers.
iSailor provides a clear presentation of navigational information, electronic charts and additional content.
TX-97 vector charts supported by iSailor are recognized worldwide as one of the most accurate and reliable sources of navigational information.

Chart folios can be purchased and downloaded in the iSailor Chart Store utilizing the standard iTunes Store payment/purchasing procedure. Chart correction service is provided on annual basis via the auto-renewable subscription service. iTunes will charge payment after confirmation of the chart correction purchase. You may manage your subscriptions and turn off the auto-renewal service in the Account Settings. Your subscription will automatically renew unless auto-renewal is turned off at least 24 hours before the end of the subscription period. You can cancel your subscription in the Chart Store any time. All previously purchased chart folios will remain available for you and can be restored from the service via the Chart Restore function. To receive subsequent chart corrections for your purchased charts, you will need to subscribe to the annual updates in the Chart Store.

The application works on iPhone and iPad using built-in GPS, NMEA Wi-Fi GPS or an external Bluetooth GPS.

Supported devices (iOS version 11 and higher):
• iPhone 5S or higher
• iPad 5 generation or higher

iSailor features:

• Positioning system: iOS (Built-In GPS), NMEA GPS or AIS Class B (Option)
• AIS Class A NavData interface (Option)
• NMEA Heading and Rate-Of-Turn sensors (Option)
• NMEA Echo Sounder with a graphical 2D echogram and water temperature sensor (Option)
• NMEA Wind Sensor, including True & Relative wind calculation (Option)
• NMEA Autopilot interface (Option)
• Display of charts, routes, track(s) and user objects
• AIS target presentation. Target contours and dimensions (Option)
• Internet AIS service (Optional subscription)
• Weather service (Optional subscription)
• Tides and tidal currents (Optional subscription)
• Sailing guides, regional marinas (Optional subscription)
• North Up, COG Up, Head Up and Route Up chart orientations
• Information on any vector chart objects
• Free cursor, Point-To-Point and Own ship referenced ERBL functionality
• Monitoring of navigational data: Position, Course (COG) and Speed Over Ground (SOG)
• Route creation by the graphic and tabular methods. “Go To” routes.
• Waypoint monitoring: Bearing to WP, Distance to WP, XTD, Time-To-Go and ETA
• Schedule information: Time-To-Go and ETA to any selected waypoint ahead
• Multi-language support
• Multi-unit support
• Custom track colors
• Day and night chart palettes
• Alarm monitoring functionality
• Route, track and user object: export/import via GPX, KML and KMZ formats
• Advanced Logging and Playback function (Option)
• User object sharing via Facebook, Twitter, iMessenger, eMail

NOTE: Continuous use of the GPS running in the background can dramatically decrease the battery life. Wärtsilä iSailor application may use your location even when it’s not open, which can decrease battery life of the device

iSailor EULA: https://www.wartsila.com/docs/default-source/marine-documents/transas/WVL-EULA.pdf
iSailor Privacy Notice: https://www.wartsila.com/legal-privacy/privacy

Questions? Please contact us at isailor.support@wartsila.com

Sincerely yours,
iSailor Team

## Key features

- Electronic chart display
- GPS and AIS integration
- Route creation and monitoring
- Weather and tide information
- Chart correction service
- User object sharing

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| USA. Pacific Coast. CA | $4.99 | per year |
| The Bahamas | $10.49 | per year |
| Caribbean Sea. Lesser Antilles | $10.99 | 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 |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Internet AIS Service 1 year subscription | $19.49 | one-time |
| AIS Receiver Support | $11.99 | one-time |
| Tides & Currents subscription | $11.99 | one-time |


## Chart rankings

- #177 in Top Grossing · Navigation (US App Store)

## What do users think of Wärtsilä iSailor?

Overall sentiment: mixed

**Pros**

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

**Cons**

- 🐛 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

**Commonly 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

**Most 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

## Recent user reviews (10 of 375)

All indexed reviews: https://appshunter.io/ios/app/wartsila-isailor/id398456162/reviews.md

### 5/5 — Excellent

*2026-04-07*

Excellente app de navigation, interface simple, rapide et fiable. Bien plus claire et facile que les concurrents.

Prix des achats intégrés très  corrects.

Je viens d’investir dans un transpondeur AIS (émetteur / récepteur) : je reçois toutes les donnes sur l’application (iPad et / ou iPhone). J’ai également les notifications des alarmes sur mon Apple Watch. 

L’apport pour mon voilier est vraiment incroyable pour ce prix.

Merci

### 1/5 — 本船ais轮廓不显示

*2026-03-30*

新版本更新后，购买ais 功能，只显示他船ais轮廓及航向和航速，本船只能使用内置GPS显示航向和船位，本船ais数据不能接收，这点给航行及靠离泊带来极大的不方便，希望后期更新

### 1/5 — Chart Loading is broken

*2026-03-24, version 1.13.4*

Trying to update charts and Restore function does not download charts properly

### 1/5 — Good looking but always broken

*2026-03-22, version 1.13.4*

I always keep coming back to this app because it’s cheap to get into it (until you realize every other button is a paid upgrade). 

Latest issue for me is that this app can’t import routes.

### 1/5 — Detail vanishes randomly from purchased charts.

*2026-02-21, version 1.13.2*

You buy a chart and expect that what you’ve purchased remains intact, but it doesn’t. It degrades as they pull detailed data that you’ve already paid for. You’d expect purchased updates to provide the latest survey data, and by all rights they do — but if you don’t need the latest and greatest survey data, you’d expect the old charts you bought to show you everything you bought. Nope — they pull the rug out from underneath you and dangle a $6 chart upgrade out there with no guarantee that the corrupted view of the area of interest will be any improved after taking the bait. I’m done with this app. Open CPN on raspberry pi it is.

### 5/5 — Keep working, best navigation map.

*2026-02-08, version 1.13.2*

Keep working, best navigation map.

### 5/5 — Active Unlock AIS Option

*2026-02-01, version 1.13.2*

Kindly requested to active AIS options to be used with new navigation equipments.
In new devicee we receive ship data through AIVOD sentencesb that unfortunately that is locked in the app.

### 5/5 — Excellent app

*2026-01-04, version 1.13.1*

Used this for navigation for many years - highly recommended.  Recent update caused issues but all fixed now 😊

### 1/5 — No download of purchased maps possible

*2026-01-02*

Be aware: even if you once you purchased a map you later will be forced to rent it

### 1/5 — Version 1.13.0 Major Bug with IOS Position

*2025-12-31, version 1.13.0*

Version 1.13.0 no longer works with IOS position. I’ve tried this on iPhone 12 Pro using phones internal gps and M1 iPad Pro using compatible external bluetooth gps. 

This update has crippled the app. 

I’ve been using this app since the very first version. Im really disappointed. 

Bug report submitted by email but no response.

## Frequently asked questions about Wärtsilä iSailor

### What does Wärtsilä iSailor do?

Wärtsilä iSailor is a marine and river navigation application designed for amateur seafarers. It provides a clear presentation of navigational information, electronic charts, and additional content to aid in safe navigation on the water.

### How do I get charts for Wärtsilä iSailor?

Chart folios can be purchased and downloaded directly within the app through the iSailor Chart Store, utilizing the standard iTunes Store payment system. All previously purchased chart folios can be restored.

### Is Wärtsilä iSailor free to use?

The application itself is free to download. However, chart folios and certain optional services like chart correction, weather, and AIS data require in-app purchases or subscriptions.

### What devices is Wärtsilä iSailor compatible with?

The application works on iPhone and iPad devices running iOS version 11 or higher. It supports various GPS inputs, including built-in GPS, NMEA Wi-Fi GPS, and external Bluetooth GPS.

### What are the main features of Wärtsilä iSailor?

Key features include display of charts, routes, and tracks; AIS target presentation; route creation and monitoring; weather and tide information (optional); and multi-language support. It also offers advanced logging and playback functions as an option.

## Version history (last 5 releases)

### 1.13.4 — 2026-03-10

stability improvement

### 1.13.3 — 2026-02-23

stability improvement

### 1.13.2 — 2026-01-30

minor bugfix

### 1.13.1 — 2025-12-31

fix positioning with iOS system geolocation

### 1.13.0 — 2025-12-22

iOS26 support and bugfix

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## More apps by Wartsila Voyage Sweden AB

- [Wärtsilä Pilot PRO](https://appshunter.io/ios/app/wartsila-pilot-pro/id825597942)
- [Wärtsilä BridgeMate](https://appshunter.io/ios/app/wartsila-bridgemate/id1174910904)
- [Fleet Operations Mobile](https://appshunter.io/ios/app/fleet-operations-mobile/id1404865323)
- [Wärtsilä SmartLog](https://appshunter.io/ios/app/wartsila-smartlog/id1486585821)
- [Wärtsilä FOS Mobile](https://appshunter.io/ios/app/wartsila-fos-mobile/id1545576121)

All apps by Wartsila Voyage Sweden AB: https://appshunter.io/developer/398456165

## Related topics

[isailor](https://appshunter.io/ios/topics/isailor)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*