# C vs Swellpro Fly

The clearest difference is review sentiment: C at 51% against Swellpro Fly's 0%. C also leads on rating (4.5 vs 3.0) and ratings volume (2.3K vs 2). Swellpro Fly's advantage is in-app purchases (none vs 11) and iOS requirement (8.0 vs 15.1). 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. Swellpro Fly asks for nothing beyond the download.

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 2, 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 0% of Swellpro Fly's.

C ships an update every 6 weeks, Swellpro Fly every 4 weeks. The most recent releases landed on September 26, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | C | Swellpro Fly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.3K ratings)](https://appshunter.io/ios/app/c-map-boating/id967289980/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/swellpro-fly/id1205105746/reviews) |
| Number of ratings | **2.3K** | 2 |
| Positive reviews | **51.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#107** | — |
| Size | 169 MB | 6 MB |
| Requires iOS | 15.1 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Navico Norway AS](https://appshunter.io/developer/842162153) | [Shenzhen SwellPro Technology Co.,LTD](https://appshunter.io/developer/1113943094) |

## What reviewers say

### C

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

**Currently charting:** #107 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


### Swellpro Fly

[App page](https://appshunter.io/ios/app/swellpro-fly/id1205105746)

Control your unmanned aerial vehicle with this utility application. It provides convenient manipulation of your drone's functions directly from your mobile device.

**Highlights:** Drone manipulation, Convenient control, Utility tool, Unmanned aerial vehicle management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is C free?

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

### Is Swellpro Fly free?

Swellpro Fly is free to download, with no in-app purchases.

### Which has better reviews, C or Swellpro Fly?

C is rated higher. C averages 4.5 out of 5 from 2.3K ratings, while Swellpro Fly averages 3.0 from 2 ratings.

### Do C or Swellpro Fly have ads?

Neither C nor Swellpro Fly shows ads.

### Which is updated more often, C or Swellpro Fly?

C ships an update every 6 weeks, and Swellpro Fly every 4 weeks. Most recently, C was updated on September 26, 2026 and Swellpro Fly on June 1, 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.*