# Deferendum vs Reverse PET

The clearest difference is update cadence: Reverse PET at every 6 weeks against Deferendum's every 7 months. Deferendum's advantage is iOS requirement (16.4 vs 18.0). 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.

Deferendum ships an update every 7 months, Reverse PET every 6 weeks. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Deferendum | Reverse PET |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Size | 33 MB | 29 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [GOLIVE ONDIGITAL SRL](https://appshunter.io/developer/1688550626) | [Reverse PET S.R.L.](https://appshunter.io/developer/1758604598) |

## What reviewers say

### Deferendum

[App page](https://appshunter.io/ios/app/deferendum/id6449293375)

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

**In-app purchases:** none


### Reverse PET

[App page](https://appshunter.io/ios/app/reverse-pet/id6563147364)

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

**In-app purchases:** none


## Frequently asked questions

### Is Deferendum free?

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

### Is Reverse PET free?

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

### Do Deferendum or Reverse PET have ads?

Neither Deferendum nor Reverse PET shows ads.

### Which is updated more often, Deferendum or Reverse PET?

Deferendum ships an update every 7 months, and Reverse PET every 6 weeks. Most recently, Deferendum was updated on October 6, 2026 and Reverse PET on October 12, 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.*