# WBCSD vs GC21

The clearest difference is iOS requirement: GC21 at 13.0 against WBCSD's 15.5. On price, update cadence, ads and in-app purchases there is nothing between them.

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

WBCSD ships an update monthly, GC21 every 3 weeks. The most recent releases landed on September 28, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | WBCSD | GC21 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 45 MB | 32 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [gther](https://appshunter.io/developer/1668079599) | [Ahmed Abdelwahed](https://appshunter.io/developer/1829526766) |

## What reviewers say

### WBCSD

[App page](https://appshunter.io/ios/app/wbcsd/id1668079597)

**Features:** macOS Compatibility

**In-app purchases:** none


### GC21

[App page](https://appshunter.io/ios/app/gc21/id6755087005)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WBCSD free?

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

### Is GC21 free?

GC21 is free to download, with no in-app purchases.

### Do WBCSD or GC21 have ads?

Neither WBCSD nor GC21 shows ads.

### Which is updated more often, WBCSD or GC21?

WBCSD ships an update monthly, and GC21 every 3 weeks. Most recently, WBCSD was updated on September 28, 2026 and GC21 on October 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.*