# Birthday Notation vs diBirthday

The clearest difference is in-app purchases: diBirthday at none against Birthday Notation's 4. Birthday Notation's advantage is iOS requirement (8.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Birthday Notation sells 4 one-off in-app purchases. diBirthday asks for nothing beyond the download.

Birthday Notation ships an update monthly, diBirthday every 3 weeks. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Birthday Notation | diBirthday |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 40 MB | 33 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Snorre Widnes](https://appshunter.io/developer/1041817122) | [Doinno Digital Ltd](https://appshunter.io/developer/1775090976) |

## What reviewers say

### Birthday Notation

[App page](https://appshunter.io/ios/app/birthday-notation/id1268720677)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 delete | $0.99 | one-time |
| 5 deletes | $3.99 | one-time |
| 10 deletes | $6.99 | one-time |
| 20 deletes | $9.99 | one-time |


### diBirthday

[App page](https://appshunter.io/ios/app/dibirthday-birthday-reminder/id6737430577)

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

**In-app purchases:** none


## Frequently asked questions

### Is Birthday Notation free?

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

### Is diBirthday free?

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

### Do Birthday Notation or diBirthday have ads?

Neither Birthday Notation nor diBirthday shows ads.

### Which is updated more often, Birthday Notation or diBirthday?

Birthday Notation ships an update monthly, and diBirthday every 3 weeks. Most recently, Birthday Notation was updated on October 26, 2026 and diBirthday on October 25, 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.*