# CalAdvent vs Birthday Countdown 365

The clearest difference is update cadence: Birthday Countdown 365 at every 3 weeks against CalAdvent's every 4 months. CalAdvent's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price, ads and in-app purchases 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, Birthday Countdown 365 every 3 weeks. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | CalAdvent | Birthday Countdown 365 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/birthday-countdown-365/id6741700632/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 28 MB | 1 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Eric Smith](https://appshunter.io/developer/415133551) | [Mohammed Alani](https://appshunter.io/developer/1715154512) |

## What reviewers say

### CalAdvent

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Birthday Countdown 365

[App page](https://appshunter.io/ios/app/birthday-countdown-365/id6741700632)

Never miss a special occasion again with this intuitive reminder app. It provides timely notifications, customizable alerts, and a personal touch with photos and notes. Track all upcoming birthdays effortlessly and ensure every celebration is unforgettable.

**Highlights:** Effortless birthday tracking, Timely and customizable notifications, Countdown to upcoming birthdays, Add photos and notes, Sleek, intuitive design, Dark mode support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CalAdvent free?

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

### Is Birthday Countdown 365 free?

Birthday Countdown 365 is free to download, with no in-app purchases.

### Do CalAdvent or Birthday Countdown 365 have ads?

Neither CalAdvent nor Birthday Countdown 365 shows ads.

### Which is updated more often, CalAdvent or Birthday Countdown 365?

CalAdvent ships an update every 4 months, and Birthday Countdown 365 every 3 weeks. Most recently, CalAdvent was updated on October 10, 2026 and Birthday Countdown 365 on October 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.*