# iNavX vs SeaDrive

The clearest difference is review sentiment: SeaDrive at 89% against iNavX's 44%. SeaDrive also leads on ads (none vs shown) and update cadence (fortnightly vs every 5 weeks). iNavX's advantage is ratings volume (22K vs 248) and rating (4.8 vs 4.5). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. iNavX sells 11 in-app purchases, starting at $9.99 per month and SeaDrive sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

iNavX holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: iNavX has 22K ratings behind it against 248, so its average is the more settled of the two. Written reviews complicate that: 44% of iNavX's written reviews are positive against 89% of SeaDrive's, so the app with the better star average is not the one people write more warmly about.

iNavX ships an update every 5 weeks, SeaDrive fortnightly. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | iNavX | SeaDrive |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (22K ratings)](https://appshunter.io/ios/app/inavx-marine-navigation/id286616280/reviews)** | [4.5 (248 ratings)](https://appshunter.io/ios/app/seadrive-boat-navigation/id1497056662/reviews) |
| Number of ratings | **22K** | 248 |
| Positive reviews | 43.8% of reviews | **89.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#91** | — |
| Size | 298 MB | 58 MB |
| Requires iOS | **13.0** | 18.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NavX Studios LLC](https://appshunter.io/developer/286616283) | [SeaDrive LLC](https://appshunter.io/developer/1497054442) |

## What reviewers say

### iNavX

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

**Currently charting:** #91 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 (11)**

| 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 |
| Explorer Chartbooks - Bahamas | $69.99 | 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


### SeaDrive

[App page](https://appshunter.io/ios/app/seadrive-boat-navigation/id1497056662)

This marine navigation app offers offline charting, route planning, and tide/current predictions. It provides free US charts and integrates weather forecasts and points of interest like marinas. Share your live track with others for enhanced safety and communication on the water.

**Highlights:** Offline charting and navigation, Route building and navigation, Tide and current predictions, 5-day weather forecasts, Live track sharing, Points of Interest (marinas, boat ramps)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sea Drive Pro | $2.99 | per month |
| Sea Drive Pro | $34.99 | per year |
| US Charts | Free | one-time |

**What reviewers like**

- 👍 Intuitive and easy to use interface
- 🗺️ Accurate navigation and depth finder
- 🌟 Great for planning routes and marking spots
- 🤝 Easy to share trips with friends
- 💨 Excellent weather and tide features

**What reviewers complain about**

- 🐛 Waypoints deleted multiple times
- 🐛 Vessel location disappeared
- 🐛 App crashes when downloading charts

**Reported bugs**

- Waypoints are deleted by the app
- Vessel location disappears
- App crashes during chart download on older devices

**Requested features**

- Consider adding more advanced charting options
- Further refine waypoint saving reliability


## Frequently asked questions

### Is iNavX free?

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

### Is SeaDrive free?

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

### Which has better reviews, iNavX or SeaDrive?

iNavX is rated higher. iNavX averages 4.8 out of 5 from 22K ratings, while SeaDrive averages 4.5 from 248 ratings.

### Do iNavX or SeaDrive have ads?

iNavX shows ads; SeaDrive does not.

### Which is updated more often, iNavX or SeaDrive?

iNavX ships an update every 5 weeks, and SeaDrive fortnightly. Most recently, iNavX was updated on October 17, 2026 and SeaDrive on October 11, 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.*