# Cortrium C3 vs S

The clearest difference is update cadence: S at every 2 months against Cortrium C3's every 11 months. Cortrium C3's advantage is iOS requirement (12.0 vs 15.1). 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.

Cortrium C3 ships an update every 11 months, S every 2 months. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Cortrium C3 | S |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Size | 24 MB | 34 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Cortrium ApS](https://appshunter.io/developer/909412468) | [Wellysis Corp.](https://appshunter.io/developer/1493160661) |

## What reviewers say

### Cortrium C3

[App page](https://appshunter.io/ios/app/cortrium-c3/id1480354424)

**Features:** macOS Compatibility

**In-app purchases:** none


### S

[App page](https://appshunter.io/ios/app/s-patch-medi-mobile/id1665374269)

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

**In-app purchases:** none


## Frequently asked questions

### Is Cortrium C3 free?

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

### Is S free?

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

### Do Cortrium C3 or S have ads?

Neither Cortrium C3 nor S shows ads.

### Which is updated more often, Cortrium C3 or S?

Cortrium C3 ships an update every 11 months, and S every 2 months. Most recently, Cortrium C3 was updated on September 9, 2026 and S on September 18, 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.*