# CalAdvent vs Big Countdown

The clearest difference is update cadence: Big Countdown at every 2 days against CalAdvent's every 4 months. Big Countdown also leads on iOS requirement (12.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CalAdvent ships an update every 4 months, Big Countdown every 2 days. The most recent releases landed on September 8, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | CalAdvent | Big Countdown |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 28 MB | 8 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eric Smith](https://appshunter.io/developer/415133551) | [Pierre Ramoin](https://appshunter.io/developer/1715390405) |

## What reviewers say

### CalAdvent

[App page](https://appshunter.io/ios/app/caladvent/id1439383338)

**Features:** macOS Compatibility

**In-app purchases:** none


### Big Countdown

[App page](https://appshunter.io/ios/app/big-countdown/id6517356676)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CalAdvent free?

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

### Is Big Countdown free?

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

### Which is updated more often, CalAdvent or Big Countdown?

CalAdvent ships an update every 4 months, and Big Countdown every 2 days. Most recently, CalAdvent was updated on September 8, 2026 and Big Countdown on May 16, 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.*