# C vs Sailmate

The clearest difference is rating: C at 4.5 against Sailmate's 3.0. C also leads on review sentiment (51% vs 17%) and ratings volume (2.3K vs 1). Sailmate's advantage is iOS requirement (9.0 vs 15.1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. C sells 10 in-app purchases, starting at $1.99 per month and Sailmate sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

C holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: C has 2.3K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 51% of C's written reviews are positive against 17% of Sailmate's.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | C | Sailmate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.3K ratings)](https://appshunter.io/ios/app/c-map-boating/id967289980/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/sailmate/id1330421113/reviews) |
| Number of ratings | **2.3K** | 1 |
| Positive reviews | **51.0% of reviews** | 16.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#103** | — |
| Size | 169 MB | 144 MB |
| Requires iOS | 15.1 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Navico Norway AS](https://appshunter.io/developer/842162153) | [Myriel Aviation SA](https://appshunter.io/developer/998181101) |

## What reviewers say

### C

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

**Currently charting:** #103 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


### Sailmate

[App page](https://appshunter.io/ios/app/sailmate/id1330421113)

This app offers worldwide charts, weather forecasts, and route planning for sailors and boaters. Connect with a community to share locations, rate marinas, and view events. It also includes a signal code identifier and country flags.

**Highlights:** Worldwide nautical charts, Offline chart downloads, 5-day wind and weather predictions, Route planning and ETA, Trip recording and sharing, Community marina ratings and events, International signal code identifier

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| France SHOM chart subscription | $54.99 | one-time |


## Frequently asked questions

### Is C free?

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

### Is Sailmate free?

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

### Which has better reviews, C or Sailmate?

C is rated higher. C averages 4.5 out of 5 from 2.3K ratings, while Sailmate averages 3.0 from 1 ratings.

### Do C or Sailmate have ads?

Neither C nor Sailmate shows ads.

### Which is updated more often, C or Sailmate?

C ships an update every 6 weeks, and Sailmate every 6 weeks. Most recently, C was updated on October 13, 2026 and Sailmate on October 7, 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.*