# C vs Atlas Seekarten

The clearest difference is rating: C at 4.5 against Atlas Seekarten's 2.8. C also leads on ratings volume (2.4K vs 14) and chart position (#123 vs unranked). Atlas Seekarten's advantage is in-app purchases (none vs 10) and iOS requirement (12.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. C sells 9 in-app purchases, starting at $1.99 per month. Atlas Seekarten asks for nothing beyond the download.

C holds the better App Store score, 4.5 against 2.8. That said, the two scores are not equally well evidenced: C has 2.4K ratings behind it against 14, 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 41% of Atlas Seekarten's.

C ships an update every 6 weeks, Atlas Seekarten every 5 weeks. Both last shipped on November 6, 2026.

## The numbers

| Metric | C | Atlas Seekarten |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.4K ratings)](https://appshunter.io/ios/app/c-map-boating/id967289980/reviews)** | [2.8 (14 ratings)](https://appshunter.io/ios/app/atlas-seekarten/id1368998846/reviews) |
| Number of ratings | **2.4K** | 14 |
| Positive reviews | **51.0% of reviews** | 40.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#123** | — |
| Size | 169 MB | 155 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Navico Norway AS](https://appshunter.io/developer/842162153) | [MapITech](https://appshunter.io/developer/677751473) |

## What reviewers say

### C

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

**Currently charting:** #123 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 (9)**

| 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 |
| 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


### Atlas Seekarten

[App page](https://appshunter.io/ios/app/atlas-seekarten/id1368998846)

Access detailed worldwide digital nautical and lake charts for offline navigation. Features include route planning, waypoint management, and GPS data, all presented in an intuitive interface.

**Highlights:** Offline digital cartography, Detailed nautical and lake charts, Route planning and waypoint management, GPS data and track recording, Multiple map overlays, KML data sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is C free?

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

### Is Atlas Seekarten free?

Atlas Seekarten is free to download, with no in-app purchases.

### Which has better reviews, C or Atlas Seekarten?

C is rated higher. C averages 4.5 out of 5 from 2.4K ratings, while Atlas Seekarten averages 2.8 from 14 ratings.

### Do C or Atlas Seekarten have ads?

Neither C nor Atlas Seekarten shows ads.

### Which is updated more often, C or Atlas Seekarten?

C ships an update every 6 weeks, and Atlas Seekarten every 5 weeks. Most recently, C was updated on November 6, 2026 and Atlas Seekarten on November 6, 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.*