# Countdown vs Calendar Birthday

The clearest difference is in-app purchases: Countdown at none against Calendar Birthday's 1. Countdown also leads on device support (4 vs 1) and iOS requirement (12.0 vs 16.6). Calendar Birthday's advantage is update cadence (every 2 days vs every 6 months). On price and ads there is nothing between them.

Both are free to download. Calendar Birthday sells 1 in-app purchase, starting at $3.99 per month. Countdown asks for nothing beyond the download.

Countdown ships an update every 6 months, Calendar Birthday every 2 days. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Countdown | Calendar Birthday |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 days** |
| Size | 26 MB | 23 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mallory Haas](https://appshunter.io/developer/1523729875) | [Andrei Malyshau](https://appshunter.io/developer/1729094189) |

## What reviewers say

### Countdown

[App page](https://appshunter.io/ios/app/countdown-a-simple-countdown/id6468613814)

**In-app purchases:** none


### Calendar Birthday

[App page](https://appshunter.io/ios/app/calendar-birthday/id6757433999)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |


## Frequently asked questions

### Is Countdown free?

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

### Is Calendar Birthday free?

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

### Do Countdown or Calendar Birthday have ads?

Neither Countdown nor Calendar Birthday shows ads.

### Which is updated more often, Countdown or Calendar Birthday?

Countdown ships an update every 6 months, and Calendar Birthday every 2 days. Most recently, Countdown was updated on October 25, 2026 and Calendar Birthday on October 27, 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.*