# 喵世代 Purrzilla vs CatDays

The clearest difference is in-app purchases: 喵世代 Purrzilla at none against CatDays's 5. 喵世代 Purrzilla also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.5). On price, update cadence and ads there is nothing between them.

Both are free to download. CatDays sells 5 one-off in-app purchases. 喵世代 Purrzilla asks for nothing beyond the download.

喵世代 Purrzilla ships an update every 4 weeks, CatDays fortnightly. Both last shipped on October 6, 2026.

## The numbers

| Metric | 喵世代 Purrzilla | CatDays |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (5 ratings)](https://appshunter.io/ios/app/catdays-cat-countdown/id6773580078/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 46 MB | 34 MB |
| Requires iOS | **15.1** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YIJEN CHEN](https://appshunter.io/developer/1878673724) | [Lychee Intelligence Co., Ltd.](https://appshunter.io/developer/1778934446) |

## What reviewers say

### 喵世代 Purrzilla

[App page](https://appshunter.io/ios/app/purrzilla/id6759451898)

**Features:** macOS Compatibility

**In-app purchases:** none


### CatDays

[App page](https://appshunter.io/ios/app/catdays-cat-countdown/id6773580078)

Track important dates with a customizable cat companion. Choose from various feline friends to count down to future events or count up days since past milestones. Receive gentle reminders and view your progress with home screen widgets.

**Highlights:** Countdown and count-up modes, Selectable cat companions, Customizable reminders, Home screen widgets, iCloud synchronization, Ad-free experience

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tofu | $2.99 | one-time |
| Ash | $2.99 | one-time |
| Milo | $2.99 | one-time |
| Pumpkin | $2.99 | one-time |
| Original Cats Pack | $4.99 | one-time |


## Frequently asked questions

### Is 喵世代 Purrzilla free?

喵世代 Purrzilla is free to download, with no in-app purchases.

### Is CatDays free?

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

### Do 喵世代 Purrzilla or CatDays have ads?

Neither 喵世代 Purrzilla nor CatDays shows ads.

### Which is updated more often, 喵世代 Purrzilla or CatDays?

喵世代 Purrzilla ships an update every 4 weeks, and CatDays fortnightly. Most recently, 喵世代 Purrzilla was updated on October 6, 2026 and CatDays on October 6, 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.*