# SEAiq Pilot vs app4sail

The clearest difference is price: SEAiq Pilot at Free against app4sail's $4.99. SEAiq Pilot also leads on chart position (#192 vs unranked). app4sail's advantage is in-app purchases (none vs 3). On update cadence, ads, device support and iOS requirement there is nothing between them.

SEAiq Pilot is free to download; app4sail costs $4.99 up front. SEAiq Pilot sells 3 in-app purchases, starting at $179.99 per year. app4sail asks for nothing beyond the download.

SEAiq Pilot ships an update every 2 months, app4sail every 3 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SEAiq Pilot | app4sail |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.9 (453 ratings)](https://appshunter.io/ios/app/seaiq-pilot/id595198842/reviews)** | — |
| Number of ratings | **453** | — |
| Positive reviews | 93.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#192** | — |
| Size | 54 MB | 8 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sakhalin](https://appshunter.io/developer/517213477) | [anton van oosten](https://appshunter.io/developer/641322651) |

## What reviewers say

### SEAiq Pilot

[App page](https://appshunter.io/ios/app/seaiq-pilot/id595198842)

**Currently charting:** #192 Top Grossing · Navigation (US App Store)

This navigation app provides advanced charting and real-time vessel data for professional marine pilots. It supports various chart formats and external NMEA/AIS devices, offering features like predicted vessel display and docking aids. A free trial is available, with an in-app purchase for permanent access.

**Highlights:** S-57, S-63, iENC, BSB/KAP chart support, External NMEA/AIS over WiFi, Predicted vessel display, Docking aids, Vessel catalog, NMEA/AIS record and playback, Mariners tools

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Annual | $179.99 | per year |
| Enterprise Annual | $359.99 | per year |
| Upgrade for Premium Features | $399.99 | one-time |

**What reviewers like**

- 👍 User-friendly and intuitive
- 🚀 Fast and efficient performance
- 🌟 Comprehensive functionalities
- 💡 Innovative features
- ✅ Reliable and dependable

**What reviewers complain about**

- 📉 Increasing cost
- ❓ Chart loading can be tedious
- ⚠️ Waypoints can be accidentally deleted
- 🤔 Difficulty in purchasing subscriptions
- 🎨 Graphics could be improved

**Reported bugs**

- 🐛 Graphics are poor
- 🐛 Hard to see own ship AIS for boarding
- 🐛 iOS 14 position acquisition issues with AIS pilot plug Wifi
- 🐛 Waypoints can be accidentally deleted
- 🐛 Chartworld map loading issues

**Requested features**

- Add Vietnamese to language section
- Allow waypoints to be locked
- Make active tools (EBL, VRM) a different color than orange
- Ability to use voice record through Bluetooth for VDR functionality
- Dark mode option


### app4sail

[App page](https://appshunter.io/ios/app/app4sail/id641578574)

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

**In-app purchases:** none


## Frequently asked questions

### Is SEAiq Pilot free?

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

### Is app4sail free?

app4sail costs $4.99, with no in-app purchases.

### Do SEAiq Pilot or app4sail have ads?

Neither SEAiq Pilot nor app4sail shows ads.

### Which is updated more often, SEAiq Pilot or app4sail?

SEAiq Pilot ships an update every 2 months, and app4sail every 3 months. Most recently, SEAiq Pilot was updated on October 29, 2026 and app4sail 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.*