# SOnIA vs RelaxoPet PRO

The clearest difference is ads: RelaxoPet PRO at none against SOnIA's shown. RelaxoPet PRO also leads on update cadence (every 3 days vs every 3 months) and iOS requirement (13.0 vs 15.0). On price, 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.

SOnIA ships an update every 3 months, RelaxoPet PRO every 3 days. The most recent releases landed on October 25, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SOnIA | RelaxoPet PRO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 days** |
| Size | 59 MB | 21 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Markus Otto Ludwig Berger](https://appshunter.io/developer/1750511405) | [RelaxoSystem GmbH](https://appshunter.io/developer/1557010811) |

## What reviewers say

### SOnIA

[App page](https://appshunter.io/ios/app/sonia/id6503953294)

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

**In-app purchases:** none


### RelaxoPet PRO

[App page](https://appshunter.io/ios/app/relaxopet-pro/id6759315552)

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

**In-app purchases:** none


## Frequently asked questions

### Is SOnIA free?

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

### Is RelaxoPet PRO free?

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

### Do SOnIA or RelaxoPet PRO have ads?

SOnIA shows ads; RelaxoPet PRO does not.

### Which is updated more often, SOnIA or RelaxoPet PRO?

SOnIA ships an update every 3 months, and RelaxoPet PRO every 3 days. Most recently, SOnIA was updated on October 25, 2026 and RelaxoPet PRO 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.*