# Birthday Countdown vs KNB

The clearest difference is in-app purchases: KNB at none against Birthday Countdown's 2. Birthday Countdown's advantage is iOS requirement (18.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Birthday Countdown sells 2 in-app purchases, starting at $0.99 per 7 days. KNB asks for nothing beyond the download.

## The numbers

| Metric | Birthday Countdown | KNB |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Size | 7 MB | 1 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hasan Huseyin Akcay](https://appshunter.io/developer/1844845016) | [Justin Lee](https://appshunter.io/developer/1370992736) |

## What reviewers say

### Birthday Countdown

[App page](https://appshunter.io/ios/app/birthday-countdown-capycount/id6753757014)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $0.99 | per 7 days |
| Yearly Premium | $4.99 | per year |


### KNB

[App page](https://appshunter.io/ios/app/knb-anniversary-tracker/id6786082989)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Birthday Countdown free?

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

### Is KNB free?

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

### Do Birthday Countdown or KNB have ads?

Neither Birthday Countdown nor KNB shows ads.

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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.*