# Age Notes vs BirthdayBook

The clearest difference is in-app purchases: Age Notes at none against BirthdayBook's 1. Age Notes also leads on update cadence (every 2 days vs every 10 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BirthdayBook sells 1 one-off in-app purchase. Age Notes asks for nothing beyond the download.

Age Notes ships an update every 2 days, BirthdayBook every 10 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Age Notes | BirthdayBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 10 days |
| Size | 17 MB | 8 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [MITSUKO MARGOT KUBOTA ONO](https://appshunter.io/developer/1799524637) | [Takumi Sekiguchi](https://appshunter.io/developer/1896725776) |

## What reviewers say

### Age Notes

[App page](https://appshunter.io/ios/app/age-notes-birthday-tracker/id6776936241)

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

**In-app purchases:** none


### BirthdayBook

[App page](https://appshunter.io/ios/app/birthdaybook-countdown/id6790126101)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $1.99 | one-time |


## Frequently asked questions

### Is Age Notes free?

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

### Is BirthdayBook free?

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

### Do Age Notes or BirthdayBook have ads?

Both Age Notes and BirthdayBook show ads.

### Which is updated more often, Age Notes or BirthdayBook?

Age Notes ships an update every 2 days, and BirthdayBook every 10 days. Most recently, Age Notes was updated on October 28, 2026 and BirthdayBook 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.*