# WeekdayWidget — Learn the Human Calendar trick

> Learn to mentally calculate the day of the week for any date. (iPhone/iPad app by Jasper Murphy.)

- Source: https://appshunter.io/ios/app/weekdaywidget/id6745067970 (this page in markdown: same URL + `.md`)
- Developer: [Jasper Murphy](https://appshunter.io/developer/1810587437)
- Category: Education, Games
- Price: Free
- Rating: 5.00/5 from 10 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 34 MB
- Languages: English
- Released: 2025-04-27
- Data updated: 2026-06-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/weekdaywidget/id6745067970/reviews.md

## What is WeekdayWidget?

Want to learn the ‘Human Calendar’ trick and quickly calculate the day of the week for any calendar date in your head?
WeekdayWidget is the definitive platform for learning, training, and performing mental weekday calculation. It has never been easier to learn this skill- in addition to the comprehensive text and video tutorials, WeekdayWidget features an exclusive ‘Guided Solve’ mode that walks you step by step through the full process until you’re ready to solve on your own!
The app also features:
- Sleek user interface with unlockable themes
- Training minigames for practicing individual steps in the full process
- Speedrun mode based on official Memoriad categories
- Text-to-speech functionality to emulate spoken performances
- Fully customizable date range from 1600 - 2100
…and more!

Whether you’re learning for a mathematics demonstration, training for Mental Olympics competition, or just picking up a neat party trick, WeekdayWidget’s flexibility makes it the ideal platform no matter the use case. ‘Doomsday’ algorithm inventor John Conway was famously able to calculate any weekday in under two seconds… Can you beat that?

## Key features

- Learn 'Human Calendar' trick
- Text and video tutorials
- Guided Solve mode
- Training minigames
- Speedrun mode
- Customizable date range

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/weekdaywidget/id6745067970/reviews.md

### 5/5 — Easy tutorial

*2025-05-12*

This helped me work through my social insecurity at office events and corporate gatherings.   Great ice breaker / conversation starter;  it’s an excellent party trick!

### 5/5 — Saved my life

*2025-04-29*

I was at the hospital and about to receive life saving treatment, but they had to stop. They didn’t have what day my birthday was on on my file. Thanks to this app, I was able to give them the correct information and have my life threatening teeth cysts removed.

### 5/5 — This game cured my gout that i have on my foot

*2025-04-29*

Thanks

## Frequently asked questions about WeekdayWidget

### What is the 'Human Calendar' trick that WeekdayWidget teaches?

The 'Human Calendar' trick is a mental calculation method that allows you to quickly determine the day of the week for any given calendar date without external tools. WeekdayWidget provides comprehensive tutorials and guided practice to help you master this skill.

### How does WeekdayWidget help users learn the calculation trick?

WeekdayWidget offers a multi-faceted learning approach, including text and video tutorials, an exclusive 'Guided Solve' mode that breaks down the process step-by-step, and dedicated training minigames for practicing individual components of the calculation.

### Can I practice the calculation for specific dates with WeekdayWidget?

Yes, WeekdayWidget allows for fully customizable date ranges, enabling you to practice calculations for dates between the years 1600 and 2100. This flexibility ensures you can train for various scenarios.

### Does WeekdayWidget have different modes for practice?

Yes, in addition to the 'Guided Solve' mode, WeekdayWidget features a 'Speedrun' mode that is based on official Memoriad categories, allowing users to test their speed and accuracy in a competitive format.

### What is the learning methodology used by WeekdayWidget?

WeekdayWidget employs a structured learning methodology that combines theoretical instruction through tutorials with practical application via guided problem-solving and targeted minigames. This ensures a well-rounded understanding and skill development.

### How does WeekdayWidget track user progress?

While specific progress tracking metrics are not detailed, the app's 'Guided Solve' mode and 'Speedrun' mode inherently allow users to gauge their improvement by observing their ability to complete the calculation process and their speed over time.

### Is WeekdayWidget suitable for beginners in mental calculation?

Yes, WeekdayWidget is designed to be accessible for beginners with its step-by-step 'Guided Solve' mode and comprehensive tutorials. It breaks down a complex skill into manageable parts.

### Does WeekdayWidget have ads?

No, WeekdayWidget does not contain advertisements. The app is completely free to use without any interruptions from ads.

## Version history (last 1 release)

### 1.2 — 2025-04-28

No release notes.

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## Related topics

[jasper murphy](https://appshunter.io/ios/topics/jasper-murphy) · [weekdaywidget](https://appshunter.io/ios/topics/weekdaywidget)

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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 2026-06-04.*