# CalAdvent vs Anniversaries Birthday Tracker

The clearest difference is in-app purchases: CalAdvent at none against Anniversaries Birthday Tracker's 3. Anniversaries Birthday Tracker's advantage is update cadence (weekly vs every 4 months) and iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Anniversaries Birthday Tracker sells 3 in-app purchases, starting at $0.99 per month. CalAdvent asks for nothing beyond the download.

CalAdvent ships an update every 4 months, Anniversaries Birthday Tracker weekly. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | CalAdvent | Anniversaries Birthday Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Size | 28 MB | 63 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eric Smith](https://appshunter.io/developer/415133551) | [Quentin KLEIN](https://appshunter.io/developer/1741696400) |

## What reviewers say

### CalAdvent

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Anniversaries Birthday Tracker

[App page](https://appshunter.io/ios/app/anniversaries-birthday-tracker/id6503432377)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Confetti | $0.99 | per month |
| Balloon | $9.99 | per year |
| One time buy | $11.99 | one-time |


## Frequently asked questions

### Is CalAdvent free?

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

### Is Anniversaries Birthday Tracker free?

Anniversaries Birthday Tracker is free to download, with in-app purchases available.

### Do CalAdvent or Anniversaries Birthday Tracker have ads?

Neither CalAdvent nor Anniversaries Birthday Tracker shows ads.

### Which is updated more often, CalAdvent or Anniversaries Birthday Tracker?

CalAdvent ships an update every 4 months, and Anniversaries Birthday Tracker weekly. Most recently, CalAdvent was updated on November 2, 2026 and Anniversaries Birthday Tracker on November 4, 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.*