# BatLib vs Koekoe

The clearest difference is update cadence: Koekoe at every 5 days against BatLib's every 26 months. 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.

BatLib ships an update every 26 months, Koekoe every 5 days. The most recent releases landed on September 29, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | BatLib | Koekoe |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 5 days** |
| Size | 38 MB | 38 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Elekon AG](https://appshunter.io/developer/1591447845) | [Geert in t Veld](https://appshunter.io/developer/6781503311) |

## What reviewers say

### BatLib

[App page](https://appshunter.io/ios/app/batlib/id6469684050)

**Features:** macOS Compatibility

**In-app purchases:** none


### Koekoe

[App page](https://appshunter.io/ios/app/koekoe/id6781503309)

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

**In-app purchases:** none


## Frequently asked questions

### Is BatLib free?

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

### Is Koekoe free?

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

### Do BatLib or Koekoe have ads?

Neither BatLib nor Koekoe shows ads.

### Which is updated more often, BatLib or Koekoe?

BatLib ships an update every 26 months, and Koekoe every 5 days. Most recently, BatLib was updated on September 29, 2026 and Koekoe on September 17, 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.*