# Petmio vs Derax

The clearest difference is update cadence: Derax at every 9 days against Petmio's monthly. 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.

Petmio ships an update monthly, Derax every 9 days. Both last shipped on November 9, 2026.

## The numbers

| Metric | Petmio | Derax |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Size | 147 MB | 44 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [继海 宋](https://appshunter.io/developer/782174911) | [Deeray GLobal Co.,Limited](https://appshunter.io/developer/1887731436) |

## What reviewers say

### Petmio

[App page](https://appshunter.io/ios/app/petmio/id6757685045)

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

**In-app purchases:** none


### Derax

[App page](https://appshunter.io/ios/app/derax/id6761087271)

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

**In-app purchases:** none


## Frequently asked questions

### Is Petmio free?

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

### Is Derax free?

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

### Do Petmio or Derax have ads?

Neither Petmio nor Derax shows ads.

### Which is updated more often, Petmio or Derax?

Petmio ships an update monthly, and Derax every 9 days. Most recently, Petmio was updated on November 9, 2026 and Derax on November 9, 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.*