# Vertretungsplan.app vs Orthodoxia

The clearest difference is update cadence: Orthodoxia at weekly against Vertretungsplan.app's every 2 months. Vertretungsplan.app's advantage is iOS requirement (12.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Vertretungsplan.app sells 1 one-off in-app purchase and Orthodoxia sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Vertretungsplan.app ships an update every 2 months, Orthodoxia weekly. The most recent releases landed on November 6, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Vertretungsplan.app | Orthodoxia |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 58.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 24 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [TK-Schulsoftware GmbH & Co. KG](https://appshunter.io/developer/1481558812) | [Dan Siemens](https://appshunter.io/developer/6786772399) |

## What reviewers say

### Vertretungsplan.app

[App page](https://appshunter.io/ios/app/vertretungsplanapp/id1191463720)

Access school substitute plans for many German and Austrian schools on your iPhone or iPad. Receive instant notifications for changes to your chosen class. An optional Pro version offers advanced features like multiple class support and ad removal.

**Highlights:** Access substitute plans for German/Austrian schools, Automatic notifications for class changes, Support for multiple classes (Pro), View teacher substitute plans (Pro), Customizable entry colors (Pro), Smart assistant integration (Pro)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vertretungsplan Pro | $1.99 | one-time |


### Orthodoxia

[App page](https://appshunter.io/ios/app/orthodoxia/id6786892778)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Orthodoxia Premium | $1.99 | per month |


## Frequently asked questions

### Is Vertretungsplan.app free?

Vertretungsplan.app is free to download, with in-app purchases available.

### Is Orthodoxia free?

Orthodoxia is free to download, with in-app purchases available.

### Do Vertretungsplan.app or Orthodoxia have ads?

Neither Vertretungsplan.app nor Orthodoxia shows ads.

### Which is updated more often, Vertretungsplan.app or Orthodoxia?

Vertretungsplan.app ships an update every 2 months, and Orthodoxia weekly. Most recently, Vertretungsplan.app was updated on November 6, 2026 and Orthodoxia on October 28, 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.*