# PET vs PetDiaryPRO

The clearest difference is in-app purchases: PET at none against PetDiaryPRO's 2. PET also leads on iOS requirement (13.0 vs 17.0). PetDiaryPRO's advantage is update cadence (weekly vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. PetDiaryPRO sells 2 in-app purchases, starting at $0.99 per month. PET asks for nothing beyond the download.

PET ships an update monthly, PetDiaryPRO weekly. The most recent releases landed on October 5, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | PET | PetDiaryPRO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Size | 46 MB | 43 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [金芳 郭](https://appshunter.io/developer/1701870847) | [IOANNIS TZALAS](https://appshunter.io/developer/1896774179) |

## What reviewers say

### PET

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

**In-app purchases:** none


### PetDiaryPRO

[App page](https://appshunter.io/ios/app/petdiarypro/id6773142148)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CompanionOS Premium | $0.99 | per month |
| Lifetime Premium | $8.99 | one-time |


## Frequently asked questions

### Is PET free?

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

### Is PetDiaryPRO free?

PetDiaryPRO is free to download, with in-app purchases available.

### Do PET or PetDiaryPRO have ads?

Neither PET nor PetDiaryPRO shows ads.

### Which is updated more often, PET or PetDiaryPRO?

PET ships an update monthly, and PetDiaryPRO weekly. Most recently, PET was updated on October 5, 2026 and PetDiaryPRO on October 17, 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.*