# Zymewire vs GCSG

The clearest difference is update cadence: GCSG at every 3 months against Zymewire's every 25 months. Zymewire's advantage is iOS requirement (11.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Zymewire ships an update every 25 months, GCSG every 3 months. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Zymewire | GCSG |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 3 months** |
| Size | 20 MB | 65 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Zymewire](https://appshunter.io/developer/1435367225) | [Global Clinical Supplies Group](https://appshunter.io/developer/966073935) |

## What reviewers say

### Zymewire

[App page](https://appshunter.io/ios/app/zymewire/id1435367226)

**Features:** macOS Compatibility

**In-app purchases:** none


### GCSG

[App page](https://appshunter.io/ios/app/gcsg/id6464086933)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zymewire free?

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

### Is GCSG free?

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

### Do Zymewire or GCSG have ads?

Neither Zymewire nor GCSG shows ads.

### Which is updated more often, Zymewire or GCSG?

Zymewire ships an update every 25 months, and GCSG every 3 months. Most recently, Zymewire was updated on October 17, 2026 and GCSG 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.*