# PreNumbers vs Zeitkompass

The clearest difference is in-app purchases: Zeitkompass at none against PreNumbers's 1. Zeitkompass also leads on update cadence (monthly vs every 8 months). PreNumbers's advantage is iOS requirement (12.0 vs 16.4). On price, ads and device support there is nothing between them.

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

PreNumbers ships an update every 8 months, Zeitkompass monthly. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | PreNumbers | Zeitkompass |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Size | 42 MB | 90 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [IntegraTools GmbH](https://appshunter.io/developer/618103816) | [INCLUSYS UG](https://appshunter.io/developer/1756263814) |

## What reviewers say

### PreNumbers

[App page](https://appshunter.io/ios/app/prenumbers/id1142502437)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All exercises | $44.99 | one-time |


### Zeitkompass

[App page](https://appshunter.io/ios/app/zeitkompass/id6526479581)

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

**In-app purchases:** none


## Frequently asked questions

### Is PreNumbers free?

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

### Is Zeitkompass free?

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

### Do PreNumbers or Zeitkompass have ads?

Neither PreNumbers nor Zeitkompass shows ads.

### Which is updated more often, PreNumbers or Zeitkompass?

PreNumbers ships an update every 8 months, and Zeitkompass monthly. Most recently, PreNumbers was updated on October 24, 2026 and Zeitkompass on October 30, 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.*