# A Bird A Day vs Birder Diary

The clearest difference is update cadence: A Bird A Day at every 4 days against Birder Diary's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. A Bird A Day sells 1 one-off in-app purchase and Birder Diary sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

A Bird A Day ships an update every 4 days, Birder Diary every 2 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | A Bird A Day | Birder Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Size | 80 MB | 216 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [walk in the park](https://appshunter.io/developer/1832053137) | [周 王](https://appshunter.io/developer/1890135527) |

## What reviewers say

### A Bird A Day

[App page](https://appshunter.io/ios/app/a-bird-a-day/id6761128017)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Birds | $2.99 | one-time |


### Birder Diary

[App page](https://appshunter.io/ios/app/birder-diary/id6761525447)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Monthly | $2.99 | per month |
| PRO Annual | $19.99 | per year |


## Frequently asked questions

### Is A Bird A Day free?

A Bird A Day is free to download, with in-app purchases available.

### Is Birder Diary free?

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

### Do A Bird A Day or Birder Diary have ads?

Neither A Bird A Day nor Birder Diary shows ads.

### Which is updated more often, A Bird A Day or Birder Diary?

A Bird A Day ships an update every 4 days, and Birder Diary every 2 weeks. Most recently, A Bird A Day was updated on October 25, 2026 and Birder Diary on October 24, 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.*