# VS vs Petaz

The clearest difference is update cadence: Petaz at every 9 days against VS's every 5 months. VS's advantage is iOS requirement (11.0 vs 15.5). 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.

VS ships an update every 5 months, Petaz every 9 days. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | VS | Petaz |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 9 days** |
| Size | 21 MB | 86 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VSOFT TECHNOLOGY DEVELOPMENT JOINT STOCK COMPANY](https://appshunter.io/developer/1299588397) | [KAIZEN MEDICARE COMPANY LIMITED](https://appshunter.io/developer/1694877605) |

## What reviewers say

### VS

[App page](https://appshunter.io/ios/app/vs-einvoice/id1664370191)

**Features:** Vision Pro support

**In-app purchases:** none


### Petaz

[App page](https://appshunter.io/ios/app/petaz/id6755929154)

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

**In-app purchases:** none


## Frequently asked questions

### Is VS free?

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

### Is Petaz free?

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

### Do VS or Petaz have ads?

Neither VS nor Petaz shows ads.

### Which is updated more often, VS or Petaz?

VS ships an update every 5 months, and Petaz every 9 days. Most recently, VS was updated on October 11, 2026 and Petaz on October 8, 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.*