# iNavX vs Wärtsilä iSailor

The clearest difference is rating: iNavX at 4.8 against Wärtsilä iSailor's 3.3. iNavX also leads on ratings volume (22K vs 12). Wärtsilä iSailor's advantage is ads (none vs shown). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Both are free to download. iNavX sells 10 in-app purchases, starting at $9.99 per month and Wärtsilä iSailor sells 10 in-app purchases, starting at $4.99 per year. Whichever you choose, the download price is not the number that matters.

iNavX holds the better App Store score, 4.8 against 3.3. That said, the two scores are not equally well evidenced: iNavX has 22K ratings behind it against 12, so its average is the more settled of the two. Written reviews split almost evenly too, at 44% and 45% positive.

iNavX ships an update every 5 weeks, Wärtsilä iSailor every 3 weeks. The most recent releases landed on November 5, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | iNavX | Wärtsilä iSailor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (22K ratings)](https://appshunter.io/ios/app/inavx-marine-navigation/id286616280/reviews)** | [3.3 (12 ratings)](https://appshunter.io/ios/app/wartsila-isailor/id398456162/reviews) |
| Number of ratings | **22K** | 12 |
| Positive reviews | 43.8% of reviews | **44.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#140** | #178 |
| Size | 298 MB | 55 MB |
| Requires iOS | 13.0 | 13 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [NavX Studios LLC](https://appshunter.io/developer/286616283) | [Wartsila Voyage Sweden AB](https://appshunter.io/developer/398456165) |

## What reviewers say

### iNavX

[App page](https://appshunter.io/ios/app/inavx-marine-navigation/id286616280)

**Currently charting:** #140 Top Grossing · Navigation (US App Store)

This app provides comprehensive marine navigation tools, including worldwide chart coverage, weather forecasts, and AIS integration. It allows users to plan routes, track their position, and connect with onboard instruments for a complete boating experience.

**Highlights:** Worldwide marine chart access, Real-time GPS plotting, Waypoint and route management, GRIB weather forecasts, AIS integration, Nautical instrument connectivity

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Theyr Premium - Mobile (Monthly) for iOS | $9.99 | per month |
| iNavX Professional+ USA | $29.99 | per year |
| Navionics+ USA/Canada (iPhone) | $29.99 | per year |
| Navionics+ Caribbean (iPhone) | $44.99 | per year |
| Theyr Premium Weather | $49.99 | per year |
| iNavX Professional+ USA Canada | $59.99 | per year |
| C-MAP World Chart | $59.99 | per year |
| Navionics+ USA/Canada (iPad) | $79.99 | per year |
| Navionics+ Caribbean (iPad) | $79.99 | per year |
| AIS Live | $99.99 | per year |

**What reviewers like**

- 🚀 Accurate and precise navigation
- 📊 Comprehensive charting and navigation features
- 🛠️ Customizable instrument settings
- 🔄 Redundancy across devices
- 💨 Reliable performance over many years

**What reviewers complain about**

- 🤔 Clunky and unintuitive user interface
- 🗺️ Cumbersome chart management and downloading
- 🔋 Battery drain issues
- 💰 Expensive subscription model for charts
- 🐛 Stability issues and crashes

**Reported bugs**

- Inability to remove waypoints
- Inconsistent behavior when transitioning International Date Line
- Disappearing or missing chart data

**Requested features**

- Seamless chart switching and panning
- Integrated tidal and current data
- Support for more chart types and providers
- Improved route planning and editing tools
- Automatic chart updates and management


### Wärtsilä iSailor

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

**Currently charting:** #178 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 (10)**

| 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 |
| Caribbean Sea. Lesser Antilles | $10.99 | per year |
| AIS Receiver Support | $11.99 | 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


## Frequently asked questions

### Is iNavX free?

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

### Is Wärtsilä iSailor free?

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

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

iNavX is rated higher. iNavX averages 4.8 out of 5 from 22K ratings, while Wärtsilä iSailor averages 3.3 from 12 ratings.

### Do iNavX or Wärtsilä iSailor have ads?

iNavX shows ads; Wärtsilä iSailor does not.

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

iNavX ships an update every 5 weeks, and Wärtsilä iSailor every 3 weeks. Most recently, iNavX was updated on November 5, 2026 and Wärtsilä iSailor on November 1, 2026.

### Which is more popular, iNavX or Wärtsilä iSailor?

iNavX currently peaks at #140 in the App Store charts, and Wärtsilä iSailor at #178. Chart position reflects recent download velocity rather than total install base.

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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.*