# LEIFIphysik vs Lagz

The clearest difference is update cadence: Lagz at every 8 days against LEIFIphysik's monthly. LEIFIphysik's advantage is iOS requirement (14.0 vs 18.5). 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.

LEIFIphysik ships an update monthly, Lagz every 8 days. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | LEIFIphysik | Lagz |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Free | — |
| Size | 44 MB | 2 MB |
| Requires iOS | **14.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [FWU Institut für Film und Bild in Wissenschaft und Unterricht gemeinnützige GmbH](https://appshunter.io/developer/1027361636) | [Harald Hochwald](https://appshunter.io/developer/1882042359) |

## What reviewers say

### 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


### Lagz

[App page](https://appshunter.io/ios/app/lagz/id6813448307)

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

**In-app purchases:** none


## Frequently asked questions

### Is LEIFIphysik free?

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

### Is Lagz free?

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

### Do LEIFIphysik or Lagz have ads?

Neither LEIFIphysik nor Lagz shows ads.

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

LEIFIphysik ships an update monthly, and Lagz every 8 days. Most recently, LEIFIphysik was updated on October 11, 2026 and Lagz on October 7, 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.*