# C vs SEAiq Watch

The clearest difference is in-app purchases: SEAiq Watch at none against C's 11. SEAiq Watch also leads on rating (5.0 vs 4.5). C's advantage is ratings volume (2.4K vs 1) and chart position (#109 vs unranked). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. C sells 10 in-app purchases, starting at $1.99 per month. SEAiq Watch asks for nothing beyond the download.

SEAiq Watch holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: C has 2.4K ratings behind it against 1, so its average is the more settled of the two.

C ships an update every 6 weeks, SEAiq Watch every 3 months. The most recent releases landed on October 26, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | C | SEAiq Watch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2.4K ratings)](https://appshunter.io/ios/app/c-map-boating/id967289980/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/seaiq-watch/id1463247792/reviews)** |
| Number of ratings | **2.4K** | 1 |
| Positive reviews | 51.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#109** | — |
| Size | 169 MB | 1 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Navico Norway AS](https://appshunter.io/developer/842162153) | [Sakhalin](https://appshunter.io/developer/517213477) |

## What reviewers say

### C

[App page](https://appshunter.io/ios/app/c-map-boating/id967289980)

**Currently charting:** #109 Top Grossing · Navigation (US App Store)

Access up-to-date nautical charts for global exploration and planning. Save points of interest and routes, record tracks, and view marine weather. Upgrade for offline maps, GPS, and advanced features like shaded relief and AIS.

**Highlights:** Free chart viewer, Autorouting, Personal waypoints, Track recording, Marine weather forecasts, Offline map downloads, High-resolution bathymetry

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Embark Advanced Weather | $1.99 | per month |
| Embark Offline Maps USA | $2.49 | per month |
| Annual Subscription | $14.99 | per year |
| Annual subscription | $14.99 | per year |
| Region | $18.99 | per year |
| North America | $23.49 | per year |
| Maps Lakes South East USA | $25.99 | per year |
| Annual Subscription | $29.99 | per year |
| Caribbean | $32.99 | per year |
| Maps USA East Coast & Bahamas | $39.99 | per year |

**What reviewers like**

- 🚀 Accurate maps and charts
- 👍 Easy to use and intuitive
- 📍 Helpful for planning trips and routes
- 🛳️ Useful for both professionals and beginners
- ⚙️ Detailed features like shaded relief and weather info

**What reviewers complain about**

- 🐛 Frequent crashes and freezes
- ⚠️ Unreliable GPS tracking and location updates
- 🔌 Offline maps and features not working as expected
- 🤔 Confusing or missing functionality (e.g. route editing)
- 💸 Expensive subscription, not worth the cost

**Reported bugs**

- App crashes when trying to save tracks or routes
- Offline maps fail to download or disappear
- Depth/contour data inaccurate or not displaying properly
- Login and authentication issues preventing access

**Requested features**

- Add mast height/clearance feature
- Improve AIS integration and functionality
- Allow more customization of map views and data
- Provide better customer support and communication


### SEAiq Watch

[App page](https://appshunter.io/ios/app/seaiq-watch/id1463247792)

This companion app displays critical navigation data from SEAiq Pilot on your Apple Watch. It requires an Apple Watch, iPad, and iPhone, along with SEAiq Pilot installed on your iPad. Setup is detailed within the app itself.

**Highlights:** View navigation data on Apple Watch, Requires SEAiq Pilot on iPad, Relays data from iPad to Apple Watch, Detailed setup and troubleshooting, Companion app functionality

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is C free?

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

### Is SEAiq Watch free?

SEAiq Watch is free to download, with no in-app purchases.

### Which has better reviews, C or SEAiq Watch?

SEAiq Watch is rated higher. C averages 4.5 out of 5 from 2.4K ratings, while SEAiq Watch averages 5.0 from 1 ratings.

### Do C or SEAiq Watch have ads?

Neither C nor SEAiq Watch shows ads.

### Which is updated more often, C or SEAiq Watch?

C ships an update every 6 weeks, and SEAiq Watch every 3 months. Most recently, C was updated on October 26, 2026 and SEAiq Watch on October 19, 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.*