# Doomsday Practice vs Day Genius

The clearest difference is in-app purchases: Doomsday Practice at none against Day Genius's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Day Genius sells 1 one-off in-app purchase. Doomsday Practice asks for nothing beyond the download.

## The numbers

| Metric | Doomsday Practice | Day Genius |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/day-genius/id6801888644/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 6 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Taiyo Tsuchiya](https://appshunter.io/developer/1868015190) | [Craig Ricks](https://appshunter.io/developer/6801888646) |

## What reviewers say

### Doomsday Practice

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

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

**In-app purchases:** none


### Day Genius

[App page](https://appshunter.io/ios/app/day-genius/id6801888644)

Learn to calculate the weekday for any date without a calendar or phone. This app teaches a step-by-step method with interactive drills and games to master the skill. Unlock advanced features with a one-time purchase.

**Highlights:** Step-by-step weekday calculation method, Interactive drills and flashcards, Two engaging practice games, Progress tracking and weak-spot identification, Reference tables for calculations, Support for historical calendar rules

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Method | $3.99 | one-time |


## Frequently asked questions

### Is Doomsday Practice free?

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

### Is Day Genius free?

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

### Do Doomsday Practice or Day Genius have ads?

Neither Doomsday Practice nor Day Genius 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.*