# Shackleton Challenges vs QCC

Shackleton Challenges and QCC 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 2 months. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Shackleton Challenges | QCC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 52 MB | 52 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SHACKLETON DESIGN AND MANUFACTURING COMPANY LTD](https://appshunter.io/developer/1817643197) | [The Quad-Centenary Club](https://appshunter.io/developer/1885466264) |

## What reviewers say

### Shackleton Challenges

[App page](https://appshunter.io/ios/app/shackleton-challenges/id6746647746)

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

**In-app purchases:** none


### QCC

[App page](https://appshunter.io/ios/app/qcc/id6760641851)

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

**In-app purchases:** none


## Frequently asked questions

### Is Shackleton Challenges free?

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

### Is QCC free?

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

### Do Shackleton Challenges or QCC have ads?

Neither Shackleton Challenges nor QCC shows ads.

### Which is updated more often, Shackleton Challenges or QCC?

Shackleton Challenges ships an update every 2 months, and QCC every 2 months. Most recently, Shackleton Challenges was updated on October 2, 2026 and QCC on October 10, 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.*