# SeaDrive vs onNAV Marine

The clearest difference is rating: SeaDrive at 4.5 against onNAV Marine's 4.2. SeaDrive also leads on ratings volume (263 vs 18). On price, review sentiment, update cadence and ads there is nothing between them.

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

SeaDrive holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: SeaDrive has 263 ratings behind it against 18, so its average is the more settled of the two. Written reviews split almost evenly too, at 89% and 89% positive.

Both ship on a similar rhythm, roughly fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | SeaDrive | onNAV Marine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (263 ratings)](https://appshunter.io/ios/app/seadrive-boat-navigation/id1497056662/reviews)** | [4.2 (18 ratings)](https://appshunter.io/ios/app/onnav-marine/id1557830177/reviews) |
| Number of ratings | **263** | 18 |
| Positive reviews | **89.5% of reviews** | 88.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 58 MB | 152 MB |
| Requires iOS | 18.1 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SeaDrive LLC](https://appshunter.io/developer/1497054442) | [onNAV LLC](https://appshunter.io/developer/1557830179) |

## What reviewers say

### 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


### onNAV Marine

[App page](https://appshunter.io/ios/app/onnav-marine/id1557830177)

This app offers advanced marine navigation with 3D charts, real-time weather, and safety alerts. Plan trips, track storms, and monitor conditions with a user-friendly interface for all boating enthusiasts.

**Highlights:** 3D ENC Day & Night Nautical Charts, Multi-Device Anchor Alert, Live Hurricane Tracker, Live Buoy Weather & Cameras, Offline Tide Charts, Weather Radar, Navigation Compass

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month Pro | $9.99 | per month |
| Three Months Pro | $24.99 | per 3 months |
| One Year Pro | $49.99 | per year |


## Frequently asked questions

### Is SeaDrive free?

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

### Is onNAV Marine free?

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

### Which has better reviews, SeaDrive or onNAV Marine?

SeaDrive is rated higher. SeaDrive averages 4.5 out of 5 from 263 ratings, while onNAV Marine averages 4.2 from 18 ratings.

### Do SeaDrive or onNAV Marine have ads?

Neither SeaDrive nor onNAV Marine shows ads.

### Which is updated more often, SeaDrive or onNAV Marine?

SeaDrive ships an update fortnightly, and onNAV Marine fortnightly. Most recently, SeaDrive was updated on October 24, 2026 and onNAV Marine on October 24, 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.*