# C3 Training vs Skygym

C3 Training and Skygym are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 29, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | C3 Training | Skygym |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Size | 167 MB | 63 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [C3 Training](https://appshunter.io/developer/1568949133) | [SKYFITGYM PTY LTD](https://appshunter.io/developer/1580629760) |

## What reviewers say

### C3 Training

[App page](https://appshunter.io/ios/app/c3-training/id1568949131)

**Features:** macOS Compatibility

**In-app purchases:** none


### Skygym

[App page](https://appshunter.io/ios/app/skygym/id1580629758)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is C3 Training free?

C3 Training is free to download, with no in-app purchases.

### Is Skygym free?

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

### Do C3 Training or Skygym have ads?

Neither C3 Training nor Skygym shows ads.

### Which is updated more often, C3 Training or Skygym?

C3 Training ships an update every 3 months, and Skygym every 3 months. Most recently, C3 Training was updated on September 29, 2026 and Skygym on October 11, 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.*