# Zwisch Surgery vs ETSU CPG

The clearest difference is iOS requirement: Zwisch Surgery at 13.0 against ETSU CPG's 15.1. 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.

Zwisch Surgery ships an update every 2 weeks, ETSU CPG every 3 weeks. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Zwisch Surgery | ETSU CPG |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 6 MB | 39 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Covenant Data Systems, LLC](https://appshunter.io/developer/1393847632) | [Evan Harris](https://appshunter.io/developer/1812807768) |

## What reviewers say

### Zwisch Surgery

[App page](https://appshunter.io/ios/app/zwisch-surgery/id1320646033)

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

**In-app purchases:** none


### ETSU CPG

[App page](https://appshunter.io/ios/app/etsu-cpg/id6745537158)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zwisch Surgery free?

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

### Is ETSU CPG free?

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

### Do Zwisch Surgery or ETSU CPG have ads?

Neither Zwisch Surgery nor ETSU CPG shows ads.

### Which is updated more often, Zwisch Surgery or ETSU CPG?

Zwisch Surgery ships an update every 2 weeks, and ETSU CPG every 3 weeks. Most recently, Zwisch Surgery was updated on October 26, 2026 and ETSU CPG on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*