# OSG App vs MyiDSB

The clearest difference is ads: OSG App at none against MyiDSB's shown. OSG App also leads on update cadence (every 3 months vs every 10 months). On price, in-app purchases, device support and iOS requirement 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, MyiDSB every 10 months. The most recent releases landed on September 16, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | OSG App | MyiDSB |
| --- | --- | --- |
| 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** | Yes |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | Free | — |
| Size | 40 MB | 45 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Jan Philipp Dahms](https://appshunter.io/developer/1474942026) | [DEUTSCHER SCHULVEREIN BRUSSEL](https://appshunter.io/developer/1698479302) |

## 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


### MyiDSB

[App page](https://appshunter.io/ios/app/myidsb/id6451476417)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OSG App free?

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

### Is MyiDSB free?

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

### Do OSG App or MyiDSB have ads?

MyiDSB shows ads; OSG App does not.

### Which is updated more often, OSG App or MyiDSB?

OSG App ships an update every 3 months, and MyiDSB every 10 months. Most recently, OSG App was updated on September 16, 2026 and MyiDSB on September 14, 2026.

---

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