# DUO Level Up vs Meester Klaas

The clearest difference is in-app purchases: DUO Level Up at none against Meester Klaas's 4. DUO Level Up also leads on device support. On price and iOS requirement there is nothing between them.

Both are free to download. Meester Klaas sells 4 one-off in-app purchases. DUO Level Up asks for nothing beyond the download.

## The numbers

| Metric | DUO Level Up | Meester Klaas |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Monthly | — |
| Size | 36 MB | 32 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPod** | — |
| Age rating | 12+ | 4+ |
| Developer | [Appademic B.V.](https://appshunter.io/developer/549442191) | [Paul Snijders](https://appshunter.io/developer/1269490594) |

## What reviewers say

### DUO Level Up

[App page](https://appshunter.io/ios/app/duo-level-up/id1483601823)

**In-app purchases:** none


### Meester Klaas

[App page](https://appshunter.io/ios/app/meester-klaas/id6459923221)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Toegang tot leermodule D of T | $3.99 | one-time |
| Toegang tot zinsontledingd | $3.99 | one-time |
| Toegang tot spelling modules | $6.99 | one-time |
| Toegang tot alle leermodules | $8.99 | one-time |


## Frequently asked questions

### Is DUO Level Up free?

DUO Level Up is free to download, with no in-app purchases.

### Is Meester Klaas free?

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

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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.*