# Countdown until Anniversary vs CountDoun

The clearest difference is ads: CountDoun at none against Countdown until Anniversary's shown. CountDoun also leads on update cadence (every 2 months vs every 4 months) and iOS requirement (15.1 vs 17.6). 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.

Countdown until Anniversary ships an update every 4 months, CountDoun every 2 months. The most recent releases landed on September 16, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Countdown until Anniversary | CountDoun |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 18 MB | 40 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Aaron F Stephenson](https://appshunter.io/developer/391222344) | [Faize Nur OZGON](https://appshunter.io/developer/6791207023) |

## What reviewers say

### Countdown until Anniversary

[App page](https://appshunter.io/ios/app/countdown-until-anniversary/id6738866365)

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

**In-app purchases:** none


### CountDoun

[App page](https://appshunter.io/ios/app/countdoun/id6791291771)

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

**In-app purchases:** none


## Frequently asked questions

### Is Countdown until Anniversary free?

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

### Is CountDoun free?

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

### Do Countdown until Anniversary or CountDoun have ads?

Countdown until Anniversary shows ads; CountDoun does not.

### Which is updated more often, Countdown until Anniversary or CountDoun?

Countdown until Anniversary ships an update every 4 months, and CountDoun every 2 months. Most recently, Countdown until Anniversary was updated on September 16, 2026 and CountDoun on September 22, 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.*