# iAIS vs SEAiq

The clearest difference is rating: SEAiq at 4.7 against iAIS's 2.5. SEAiq also leads on review sentiment (61% vs 30%) and update cadence (every 3 weeks vs every 10 months). iAIS's advantage is iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. iAIS sells 1 one-off in-app purchase and SEAiq sells 2 in-app purchases, starting at $15.00 per year. Whichever you choose, the download price is not the number that matters.

SEAiq holds the better App Store score, 4.7 against 2.5. That said, the two scores are not equally well evidenced: SEAiq has 194 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 30% of iAIS's written reviews are positive against 61% of SEAiq's.

iAIS ships an update every 10 months, SEAiq every 3 weeks. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | iAIS | SEAiq |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (6 ratings)](https://appshunter.io/ios/app/iais/id394667307/reviews) | **[4.7 (194 ratings)](https://appshunter.io/ios/app/seaiq/id529514298/reviews)** |
| Number of ratings | 6 | **194** |
| Positive reviews | 30.4% of reviews | **61.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 66 MB | 54 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DigitalYacht Ltd.](https://appshunter.io/developer/394667310) | [Sakhalin](https://appshunter.io/developer/517213477) |

## What reviewers say

### iAIS

[App page](https://appshunter.io/ios/app/iais/id394667307)

Visualize AIS targets relative to your device's position, displaying detailed information about each target. Overlay AIS data on Navionics charts and share your boat's live position with others. This app is intended for basic navigation reference only.

**Highlights:** AIS target plotting, NMEA data instruments, AIS target details display, Navionics chart overlay, Live boat position sharing, GPS and Wind data view

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Navionics Charts Upgrade | $9.99 | one-time |


### SEAiq

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

This marine navigation app offers comprehensive charting capabilities, allowing users to load various standard chart formats and download NOAA charts. It includes essential navigation tools like waypoints, routes, and an anchor alarm, along with weather overlays and NMEA/AIS integration.

**Highlights:** Load custom S-57, S-63, iENC, BSB, KAP charts, Automatic NOAA chart downloads, Waypoints, routes, and tracks, Anchor alarm, Automatic weather downloads, 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


## Frequently asked questions

### Is iAIS free?

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

### Is SEAiq free?

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

### Which has better reviews, iAIS or SEAiq?

SEAiq is rated higher. iAIS averages 2.5 out of 5 from 6 ratings, while SEAiq averages 4.7 from 194 ratings.

### Do iAIS or SEAiq have ads?

Neither iAIS nor SEAiq shows ads.

### Which is updated more often, iAIS or SEAiq?

iAIS ships an update every 10 months, and SEAiq every 3 weeks. Most recently, iAIS was updated on October 27, 2026 and SEAiq on October 29, 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.*