# Girton College vs Doomsday Practice

The clearest difference is device support: Girton College at 3 against Doomsday Practice's 1. Girton College also leads on iOS requirement (15.1 vs 26.0). On price, ads and in-app purchases 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 | Girton College | Doomsday Practice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/doomsday-practice/id6763708034/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | — | Free |
| Size | 20 MB | 1 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ryan Biju Sebastian](https://appshunter.io/developer/1876580789) | [Taiyo Tsuchiya](https://appshunter.io/developer/1868015190) |

## What reviewers say

### Girton College

[App page](https://appshunter.io/ios/app/girton-college/id6759057461)

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

**In-app purchases:** none


### Doomsday Practice

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

Master a mental math technique to calculate the day of the week for any date. Learn step-by-step, practice with random dates, and track your progress with stats and streaks. Ideal for math enthusiasts and memory competitors.

**Highlights:** Step-by-step lessons, Practice random dates, Instant feedback, Progress tracking, Reference sheet, Build speed and accuracy

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

**In-app purchases:** none


## Frequently asked questions

### Is Girton College free?

Girton College 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 Girton College or Doomsday Practice have ads?

Neither Girton College 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.*