# PetsDiary vs Catlog

The clearest difference is price: Catlog at Free against PetsDiary's $1.99. Catlog also leads on rating (4.1 vs 3.7) and ratings volume (11 vs 3). PetsDiary's advantage is in-app purchases (none vs 2). On update cadence, ads, device support and iOS requirement there is nothing between them.

Catlog is free to download; PetsDiary costs $1.99 up front. Catlog sells 2 in-app purchases, starting at $3.49 per month. PetsDiary asks for nothing beyond the download.

Catlog holds the better App Store score, 4.1 against 3.7. Both are backed by a comparable volume of ratings — 3 and 11 respectively.

PetsDiary ships an update every 5 weeks, Catlog every 3 weeks. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | PetsDiary | Catlog |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/petsdiary/id1142567446/reviews) | **[4.1 (11 ratings)](https://appshunter.io/ios/app/catlog-cats-wellness-service/id1451276379/reviews)** |
| Number of ratings | 3 | **11** |
| Positive reviews | — | 37.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 9 MB | 84 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NICOLO CURIONI](https://appshunter.io/developer/1618586618) | [RABO, Inc.](https://appshunter.io/developer/1451276378) |

## What reviewers say

### PetsDiary

[App page](https://appshunter.io/ios/app/petsdiary/id1142567446)

Effortlessly manage all your pet's essential information, including vet visits, medications, and treatments. Locate nearby pet services and ensure your pet's well-being with this comprehensive digital organizer.

**Highlights:** Pet profile management, Vet visit tracking, Medication scheduling, Pest treatment logs, Nearby pet service locator, Data backup and sync

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

**In-app purchases:** none


### Catlog

[App page](https://appshunter.io/ios/app/catlog-cats-wellness-service/id1451276379)

This service uses connected devices to automatically track your cat's daily health information. It helps detect subtle changes in well-being, supporting a healthier life for your feline companion. Monitor your cat's health throughout their lifetime with this technological solution.

**Highlights:** Automatic health data recording, Daily health fluctuation detection, Lifetime cat wellness support, Connected device integration, Early detection of well-being changes

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| みまもりプラン | $3.49 | per month |
| 猫バカプラン | $5.49 | per month |


## Frequently asked questions

### Is PetsDiary free?

PetsDiary costs $1.99, with no in-app purchases.

### Is Catlog free?

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

### Which has better reviews, PetsDiary or Catlog?

Catlog is rated higher. PetsDiary averages 3.7 out of 5 from 3 ratings, while Catlog averages 4.1 from 11 ratings.

### Do PetsDiary or Catlog have ads?

Neither PetsDiary nor Catlog shows ads.

### Which is updated more often, PetsDiary or Catlog?

PetsDiary ships an update every 5 weeks, and Catlog every 3 weeks. Most recently, PetsDiary was updated on October 23, 2026 and Catlog on October 29, 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.*