# Schlaukopf vs clearn

Schlaukopf and clearn are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Schlaukopf sells 4 in-app purchases, starting at $3.99 per month and clearn sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Schlaukopf | clearn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/schlaukopf/id949264613/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 87.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 42 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Annette Roder](https://appshunter.io/developer/842619568) | [Andreas Ostheimer](https://appshunter.io/developer/1027787401) |

## What reviewers say

### Schlaukopf

[App page](https://appshunter.io/ios/app/schlaukopf/id949264613)

This app offers a comprehensive knowledge quiz covering all school grades and subjects. It provides diverse question types, direct feedback on performance, and detailed statistics to make learning engaging and effective. An optional premium version removes ads and unlocks offline access to thousands of questions.

**Highlights:** Covers all school grades and types, Wide selection of school subjects, Diverse question types, Direct feedback on performance, Detailed statistics on progress, Tutor functionality for progress monitoring

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium-Abo | $3.99 | per month |
| Premium-Abonnement 1 Monat | $3.99 | per month |
| Premium-Abo | $20.99 | per year |
| Premium-Abonnement 1 Jahr | $23.99 | per year |


### clearn

[App page](https://appshunter.io/ios/app/clearn/id6766691399)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| clearn Pro Monthly | $3.99 | per month |
| clearn Pro Annual | $34.99 | per year |
| clearn Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Schlaukopf free?

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

### Is clearn free?

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

### Do Schlaukopf or clearn have ads?

Neither Schlaukopf nor clearn shows ads.

---

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