# SEAiq vs Marine Navigation Lite

The clearest difference is review sentiment: SEAiq at 61% against Marine Navigation Lite's 3%. SEAiq also leads on ads (none vs shown). Marine Navigation Lite's advantage is update cadence (weekly vs every 2 weeks). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. SEAiq sells 2 in-app purchases, starting at $15.00 per year and Marine Navigation Lite sells 10 in-app purchases, starting at $0.99 per 6 months. Whichever you choose, the download price is not the number that matters.

SEAiq ships an update every 2 weeks, Marine Navigation Lite weekly. The most recent releases landed on November 6, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | SEAiq | Marine Navigation Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (194 ratings)](https://appshunter.io/ios/app/seaiq/id529514298/reviews)** | — |
| Number of ratings | **194** | — |
| Positive reviews | **61.3% of reviews** | 3.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 54 MB | 106 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Sakhalin](https://appshunter.io/developer/517213477) | [Marco Palaferri](https://appshunter.io/developer/395030821) |

## What reviewers say

### SEAiq

[App page](https://appshunter.io/ios/app/seaiq/id529514298)

This marine navigation app offers comprehensive charting tools, allowing users to load various chart formats and automatically download NOAA charts for the US. It includes features like waypoints, routes, tracks, weather overlays, and NMEA/AIS integration for enhanced seafaring.

**Highlights:** Load custom charts (S-57, S-63, BSB, KAP), Automatic NOAA chart downloads (US), Waypoint and route planning, Track recording and display, Night color modes, Anchor alarm, Weather overlays (wind & isobar), NMEA and AIS integration

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Annual | $15.00 | per year |
| Upgrade for Premium Features | $49.99 | one-time |

**What reviewers like**

- 👍 Highly reliable navigation app
- 💡 Tons of features
- ✨ Clean and sensical interface
- 🚀 Versatile for plotting routes/waypoints
- 📊 Estimating AIS target crossing range

**What reviewers complain about**

- 😩 Tedious to plot a course
- 🔧 Complicated chart setup initially
- 🤔 Not user friendly
- 📚 Instructions not very helpful
- ⏳ Time wasted on simple things

**Reported bugs**

- No access to premium features after payment
- Chart downloads fail if app is not on screen
- App freezes when trying to delete
- App crashes

**Requested features**

- Simplify course plotting
- Add support for .MBTiles
- Add VMG feature
- Add support for .MBTiles
- Add support for .MBTiles


### Marine Navigation Lite

[App page](https://appshunter.io/ios/app/marine-navigation-lite/id609276931)

This app offers offline GPS charting for marine use, allowing users to own their maps permanently. It provides advanced navigation tools, custom map creation from any image, and respects user privacy by not tracking or selling data.

**Highlights:** Lifetime map ownership, Offline GPS charting, Custom map creation from images, Global offline tides, Fish forecast, Advanced visual waypoints

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads SixMonths | $0.99 | per 6 months |
| Monthly Subscription | $0.99 | per month |
| Remove Ads (1 Year) | $1.49 | per year |
| 6 Months  Subscription | $4.49 | per 6 months |
| Update to Full Version 6Months | $4.99 | per 6 months |
| Pro | $5.99 | per year |
| Update to Full Version 1 Year | $6.99 | per year |
| 1 Year Subscription | $7.99 | per year |
| Remove Ads Forever | $2.99 | one-time |
| Full Version Forever | $19.99 | one-time |


## Frequently asked questions

### Is SEAiq free?

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

### Is Marine Navigation Lite free?

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

### Do SEAiq or Marine Navigation Lite have ads?

Marine Navigation Lite shows ads; SEAiq does not.

### Which is updated more often, SEAiq or Marine Navigation Lite?

SEAiq ships an update every 2 weeks, and Marine Navigation Lite weekly. Most recently, SEAiq was updated on November 6, 2026 and Marine Navigation Lite on November 10, 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.*