# CKalender vs School

The clearest difference is in-app purchases: School at none against CKalender's 1. School also leads on update cadence (every 3 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CKalender sells 1 one-off in-app purchase. School asks for nothing beyond the download.

CKalender ships an update every 4 months, School every 3 weeks. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | CKalender | School |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 3 MB | 25 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Reinhard Hanselmann](https://appshunter.io/developer/848981931) | [Systemair Production AB](https://appshunter.io/developer/1115598317) |

## What reviewers say

### CKalender

[App page](https://appshunter.io/ios/app/ckalender/id848981928)

Manage and view appointments in an online group calendar directly from your smartphone or tablet. Requires an existing account with app activation for full functionality.

**Highlights:** View group calendar appointments, Manage appointments, Smartphone and tablet compatibility, Online group calendar integration

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CKApp-Freischaltung | $2.99 | one-time |


### School

[App page](https://appshunter.io/ios/app/school-ahu-control/id1572414245)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CKalender free?

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

### Is School free?

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

### Do CKalender or School have ads?

Neither CKalender nor School shows ads.

### Which is updated more often, CKalender or School?

CKalender ships an update every 4 months, and School every 3 weeks. Most recently, CKalender was updated on October 13, 2026 and School on October 12, 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.*