# BIO vs Κουκου

The clearest difference is in-app purchases: BIO at none against Κουκου's 1. Κουκου's advantage is update cadence (every 2 weeks vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Κουκου sells 1 one-off in-app purchase. BIO asks for nothing beyond the download.

BIO ships an update every 5 weeks, Κουκου every 2 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | BIO | Κουκου |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Size | 62 MB | 314 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Narratologies P.C.](https://appshunter.io/developer/1568360045) | [Kanchalika Kongyong](https://appshunter.io/developer/1883480594) |

## What reviewers say

### BIO

[App page](https://appshunter.io/ios/app/bio-i/id6736948263)

**Features:** macOS Compatibility

**In-app purchases:** none


### Κουκου

[App page](https://appshunter.io/ios/app/greek/id6785407491)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Koukou | $3.99 | one-time |


## Frequently asked questions

### Is BIO free?

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

### Is Κουκου free?

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

### Do BIO or Κουκου have ads?

Neither BIO nor Κουκου shows ads.

### Which is updated more often, BIO or Κουκου?

BIO ships an update every 5 weeks, and Κουκου every 2 weeks. Most recently, BIO was updated on October 25, 2026 and Κουκου on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*