# mathekalk vs LEIFIphysik

The clearest difference is update cadence: LEIFIphysik at monthly against mathekalk's every 2 months. LEIFIphysik also leads on iOS requirement (15.0 vs 17). 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.

mathekalk ships an update every 2 months, LEIFIphysik monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | mathekalk | LEIFIphysik |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 55.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free |
| Size | 22 MB | 45 MB |
| Requires iOS | 17 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stephan Engelhard](https://appshunter.io/developer/1542199587) | [FWU Institut für Film und Bild in Wissenschaft und Unterricht gemeinnützige GmbH](https://appshunter.io/developer/1027361636) |

## What reviewers say

### mathekalk

[App page](https://appshunter.io/ios/app/mathekalk/id1542199585)

**Features:** Vision Pro support

**In-app purchases:** none


### LEIFIphysik

[App page](https://appshunter.io/ios/app/leifiphysik/id6466470177)

This app serves as a physics learning assistant for students from 5th grade through high school. It provides comprehensive content, exercises, and simulations aligned with school curricula, helping with homework, presentations, and exams. Users can track their progress and create personalized collections of topics.

**Highlights:** Physics content for grades 5-12, Homework and exam preparation, Interactive simulations, Knowledge quizzes, Personalized topic collections, Progress tracking, Curriculum-aligned learning

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

**In-app purchases:** none


## Frequently asked questions

### Is mathekalk free?

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

### Is LEIFIphysik free?

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

### Do mathekalk or LEIFIphysik have ads?

Neither mathekalk nor LEIFIphysik shows ads.

### Which is updated more often, mathekalk or LEIFIphysik?

mathekalk ships an update every 2 months, and LEIFIphysik monthly. Most recently, mathekalk was updated on October 24, 2026 and LEIFIphysik on October 24, 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.*