# OSG App vs TfK Eltern

The clearest difference is iOS requirement: TfK Eltern at 13.0 against OSG App's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OSG App ships an update every 3 months, TfK Eltern every 2 months. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | OSG App | TfK Eltern |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/osg-app/id792552698/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 39 MB | 49 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Jan Philipp Dahms](https://appshunter.io/developer/1474942026) | [Terminal for Kids GmbH](https://appshunter.io/developer/1596296444) |

## What reviewers say

### OSG App

[App page](https://appshunter.io/ios/app/osg-app/id792552698)

This app provides quick access to the OSG Mainz portal, offering personalized class schedules and substitute plans. It facilitates digital class registers and absence management, with push notifications for messages and important updates.

**Highlights:** Personalized class and substitute schedules, Digital class register, Absence management, Push notifications for messages, Quick portal connection

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

**In-app purchases:** none


### TfK Eltern

[App page](https://appshunter.io/ios/app/tfk-eltern/id1596296442)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is OSG App free?

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

### Is TfK Eltern free?

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

### Do OSG App or TfK Eltern have ads?

Neither OSG App nor TfK Eltern shows ads.

### Which is updated more often, OSG App or TfK Eltern?

OSG App ships an update every 3 months, and TfK Eltern every 2 months. Most recently, OSG App was updated on October 24, 2026 and TfK Eltern on October 11, 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.*