# 21K School vs lehramt.app

21K School and lehramt.app are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

21K School ships an update every 27 months, lehramt.app every 25 months. The most recent releases landed on December 3, 2025 and October 10, 2026 respectively.

## The numbers

| Metric | 21K School | lehramt.app |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 25 months** |
| Size | 96 MB | 5 MB |
| Requires iOS | **13.3** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Mindreflex Technologies Private Limited](https://appshunter.io/developer/1600971335) | [LBZ Lehrerberatungszentrum Baden-Wurttemberg GmbH](https://appshunter.io/developer/1646608581) |

## What reviewers say

### 21K School

[App page](https://appshunter.io/ios/app/21k-school/id1619098640)

**Features:** macOS Compatibility

**In-app purchases:** none


### lehramt.app

[App page](https://appshunter.io/ios/app/lehramtapp/id6443501440)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 21K School free?

21K School is free to download, with no in-app purchases.

### Is lehramt.app free?

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

### Do 21K School or lehramt.app have ads?

Neither 21K School nor lehramt.app shows ads.

### Which is updated more often, 21K School or lehramt.app?

21K School ships an update every 27 months, and lehramt.app every 25 months. Most recently, 21K School was updated on December 3, 2025 and lehramt.app on October 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.*