# ChillNavi vs CatDays

The clearest difference is in-app purchases: ChillNavi at none against CatDays's 5. ChillNavi also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.5). CatDays's advantage is update cadence (fortnightly vs every 2 months). On price and ads there is nothing between them.

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

ChillNavi ships an update every 2 months, CatDays fortnightly. Both last shipped on October 6, 2026.

## The numbers

| Metric | ChillNavi | 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 2 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 45 MB | 34 MB |
| Requires iOS | **15.1** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [yusuke mori](https://appshunter.io/developer/1890813629) | [Lychee Intelligence Co., Ltd.](https://appshunter.io/developer/1778934446) |

## What reviewers say

### ChillNavi

[App page](https://appshunter.io/ios/app/chillnavi/id6763676745)

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

**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 ChillNavi free?

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

### Is CatDays free?

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

### Do ChillNavi or CatDays have ads?

Neither ChillNavi nor CatDays shows ads.

### Which is updated more often, ChillNavi or CatDays?

ChillNavi ships an update every 2 months, and CatDays fortnightly. Most recently, ChillNavi 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.*