# Zonnedimmer vs BirdID

The clearest difference is update cadence: BirdID at every 4 days against Zonnedimmer's monthly. On price, ads, 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.

Zonnedimmer ships an update monthly, BirdID every 4 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Zonnedimmer | BirdID |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Size | 28 MB | 24 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zonnedimmer B.V.](https://appshunter.io/developer/1746898123) | [Roy Schuurman](https://appshunter.io/developer/1895402082) |

## What reviewers say

### Zonnedimmer

[App page](https://appshunter.io/ios/app/zonnedimmer/id6502827597)

**Features:** macOS Compatibility

**In-app purchases:** none


### BirdID

[App page](https://appshunter.io/ios/app/birdid/id6763620187)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zonnedimmer free?

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

### Is BirdID free?

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

### Do Zonnedimmer or BirdID have ads?

Neither Zonnedimmer nor BirdID shows ads.

### Which is updated more often, Zonnedimmer or BirdID?

Zonnedimmer ships an update monthly, and BirdID every 4 days. Most recently, Zonnedimmer was updated on October 30, 2026 and BirdID on October 31, 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.*