# Ruban Vert vs Cdk

The clearest difference is update cadence: Cdk at monthly against Ruban Vert's every 7 months. Ruban Vert's advantage is iOS requirement (13.0 vs 15.1). 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.

Ruban Vert ships an update every 7 months, Cdk monthly. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Ruban Vert | Cdk |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Monthly** |
| Size | 40 MB | 235 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Grouplive](https://appshunter.io/developer/961644262) | [Ville de Coudekerque-Branche](https://appshunter.io/developer/1477200260) |

## What reviewers say

### Ruban Vert

[App page](https://appshunter.io/ios/app/ruban-vert/id1556022870)

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

**In-app purchases:** none


### Cdk

[App page](https://appshunter.io/ios/app/cdk-quiz/id6740033495)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ruban Vert free?

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

### Is Cdk free?

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

### Do Ruban Vert or Cdk have ads?

Neither Ruban Vert nor Cdk shows ads.

### Which is updated more often, Ruban Vert or Cdk?

Ruban Vert ships an update every 7 months, and Cdk monthly. Most recently, Ruban Vert was updated on September 8, 2026 and Cdk on September 10, 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.*