# Day of Week Pro — Calculate In Your Head

> Mental calculation app to determine the day of the week for any date. (iPhone/iPad app by Thomas Bradshaw.)

- Source: https://appshunter.io/ios/app/day-of-week-pro/id1662589371 (this page in markdown: same URL + `.md`)
- Developer: [Thomas Bradshaw](https://appshunter.io/developer/1360674639)
- Category: Education, Reference
- Price: Free
- Rating: 4.00/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 14 MB
- Languages: American English
- Released: 2023-02-02
- Data updated: 2026-07-22
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/day-of-week-pro/id1662589371/reviews.md

## What is Day of Week Pro?

Be the life of the party by calculating any day of week in your head!

Quickly determine what day your were born, or when a contract was signed.  Impress your friends & colleagues with your newfound skill.

## Key features

- Calculate day of week
- Mental math skill
- Impress others
- Quick date determination

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/day-of-week-pro/id1662589371/reviews.md

### 3/5 — 功能有待提升

*2024-01-05*

1. 题目答对后还得手动点击刷新更换题目。
2 .年代只有几千年，希望把年代扩展到公元前。

**Developer response:** [For English readers:  the reviewer requests functionality so that dates go back to BCE.]  Thank you for trying this app.  However, the Doomsday algorithm developed by John Conway is fully dependent upon the Gregorian calendar which was introduced in 1582.  Prior to that, the Julian calendar was in effect but didn't account for leap day discrepancies.  Therefore this app is only useful for days past 15th October, 1582 ... BTW, that's a Friday.

## Frequently asked questions about Day of Week Pro

### How does Day of Week Pro help with learning?

Day of Week Pro enhances learning by providing a practical application of mathematical principles to quickly determine the day of the week for any date. This fosters mental agility and a deeper understanding of calendar systems.

### What is the learning methodology behind Day of Week Pro?

The app focuses on developing a specific mental calculation skill, allowing users to practice and master the logic behind determining the day of the week. It's a hands-on approach to mastering a unique cognitive task.

### Does Day of Week Pro offer progress tracking?

While Day of Week Pro is designed for quick, in-the-moment calculations, it does not explicitly offer built-in progress tracking features. Users can self-monitor their improvement in speed and accuracy.

### Can I get a certification from using Day of Week Pro?

Day of Week Pro is an educational tool for skill development and does not offer formal certifications upon completion of its use.

### What devices is Day of Week Pro available on?

Day of Week Pro is available on iPhone and iPad devices, making it accessible for Apple users on the go.

### How often is Day of Week Pro updated?

The app was last updated on November 6, 2025, indicating recent development and potential for future improvements and bug fixes.

### What is the age rating for Day of Week Pro?

Day of Week Pro has an age rating of 4+, making it suitable for a wide range of users, including children and adults.

### Does Day of Week Pro have ads?

No, Day of Week Pro is ad-free, providing an uninterrupted user experience for calculating days of the week.

## Version history (last 5 releases)

### 1.8 — 2026-07-17

Got a new device?  We're continually working on features, fixes and improvements.   Make sure you stay updated for the best performance!

### 1.7 — 2025-11-06

We've made several small improvements and bug fixes to give you a better experience.

### 1.6 — 2025-03-18

You spoke and we listened!  Here's what's new:

- Timed mode:  automatically goes to the next question!
- New language:  Brazilian Portuguese (pt-BR)
- Optimized for iOS 18
- Other minor enhancements & bug fixes

Got a suggestion?  Contact us at:
dayofweekpro@ideasonanapkin.com

### 1.5 — 2024-05-29

What's new?  Just under the hood stuff.  Pay no attention to the man behind the curtain!

Got a suggestion?  Contact us at:
dayofweekpro@ideasonanapkin.com

### 1.4 — 2024-01-01

What's new?  Just under the hood stuff:
- Optimized for iOS 17
- Implemented TCF recommendations to comply with European / GDPR consent requirements.

Got a suggestion?  Contact us at:
dayofweekpro@ideasonanapkin.com

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## More apps by Thomas Bradshaw

- [Day of Week](https://appshunter.io/ios/app/day-of-week/id1360674640)
- [Kwik Jam](https://appshunter.io/ios/app/kwik-jam/id1449629769)
- [Square Root Pro](https://appshunter.io/ios/app/square-root-pro/id1621600446)

All apps by Thomas Bradshaw: https://appshunter.io/developer/1360674639

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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 2026-07-22.*