# Calendar-Trainer

> Calendar-Trainer (iPhone/iPad app by Martin Eisele.)

- Source: https://appshunter.io/ios/app/calendar/id1293920342 (this page in markdown: same URL + `.md`)
- Developer: [Martin Eisele](https://appshunter.io/developer/1099492467)
- Category: Education, Entertainment
- Price: $31.99
- Age rating: 4+
- Requires: iOS 15.6 · 1 MB
- Languages: English
- Released: 2017-10-19
- Data updated: 2026-05-12
- User reviews in markdown: https://appshunter.io/ios/app/calendar/id1293920342/reviews.md

## What is Calendar?

Supported Languages: German and English

With this app you can train your ability to calculate a weekday for any given date. It offers a great variety of training methods.

This app also gives you an overview of my method/simplification on how the algorithm works and how you can calculate it in your head.


## Version history (last 5 releases)

### 1.4 — 2026-04-14

Optimized User-Interface 
Further optimisations and bug fixes

### 1.3 — 2023-02-25

Bug fixes
Improved UI

### 1.2 — 2019-10-07

Compatibility to iOS 13
Nicer User-Interface (changed colors)
small fixes.

### 1.1 — 2017-11-08

iPhone X Support

### 1.0 — 2017-10-19

No release notes.

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| --- | --- | --- | --- |
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| [Minus-Calculator](https://appshunter.io/ios/app/minus/id1547136719) | — | Free | Education |
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## More apps by Martin Eisele

- [SD Poker](https://appshunter.io/ios/app/sd-poker/id1099492468)
- [Vision - card spread analyzer](https://appshunter.io/ios/app/vision/id1183529356)
- [Vision:Tricks - for Vision app](https://appshunter.io/ios/app/vision/id1258153519)
- [Imagine Pad](https://appshunter.io/ios/app/imagine-pad/id1439330571)
- [Talk Tools](https://appshunter.io/ios/app/talk-tools/id1507392660)

All apps by Martin Eisele: https://appshunter.io/developer/1099492467

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-12.*