# PET vs Probe Innov

The clearest difference is iOS requirement: Probe Innov at 10.0 against PET's 13.0. 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.

PET ships an update monthly, Probe Innov every 2 months. The most recent releases landed on October 28, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | PET | Probe Innov |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Size | 46 MB | 25 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [金芳 郭](https://appshunter.io/developer/1701870847) | [Shenzhen Ruiteng Sci Tech Innovation Technology Co., Ltd](https://appshunter.io/developer/1847134510) |

## What reviewers say

### PET

[App page](https://appshunter.io/ios/app/pet-diary/id6743213111)

**In-app purchases:** none


### Probe Innov

[App page](https://appshunter.io/ios/app/probe-innov/id6754214133)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PET free?

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

### Is Probe Innov free?

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

### Do PET or Probe Innov have ads?

Neither PET nor Probe Innov shows ads.

### Which is updated more often, PET or Probe Innov?

PET ships an update monthly, and Probe Innov every 2 months. Most recently, PET was updated on October 28, 2026 and Probe Innov on October 13, 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.*