# Doomsday Method | Mental Game vs Doomsday Practice

The clearest difference is iOS requirement: Doomsday Method | Mental Game at 17.0 against Doomsday Practice's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Doomsday Method | Mental Game | Doomsday Practice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/doomsday-method-mental-game/id6447447000/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Free | — |
| Size | 11 MB | 1 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Leon Grimmeisen](https://appshunter.io/developer/1654025400) | [Taiyo Tsuchiya](https://appshunter.io/developer/1868015190) |

## What reviewers say

### Doomsday Method | Mental Game

[App page](https://appshunter.io/ios/app/doomsday-method-mental-game/id6447447000)

Master the art of calculating weekdays for any date with this comprehensive educational app. Learn a proven technique, practice with interactive exercises, and track your progress to sharpen your mental arithmetic skills.

**Highlights:** Learn Doomsday Method principles, Interactive examples and tips, Dedicated training mode, Progress tracking and statistics, User-friendly interface

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

**In-app purchases:** none


### Doomsday Practice

[App page](https://appshunter.io/ios/app/doomsday-practice/id6763708034)

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

**In-app purchases:** none


## Frequently asked questions

### Is Doomsday Method | Mental Game free?

Doomsday Method | Mental Game is free to download, with no in-app purchases.

### Is Doomsday Practice free?

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

### Do Doomsday Method | Mental Game or Doomsday Practice have ads?

Neither Doomsday Method | Mental Game nor Doomsday Practice shows ads.

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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.*