Doomsday Algorithm Trainer

4.8
109 reviews
1K+
Downloads
Teacher Approved
Content rating
Everyone
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About this game

The Doomsday Algorithm is a method to calculate the day of the week for any given date and involves four steps.

This brain trainer for children and adults will explain the different steps and gives simple assignments to train yourself in memorizing specific dates or to practice simple calculation steps. Play this app every day to master this simple algorithm, that can be learned within an hour.

Game concept to improve your mind with a daily reward system and reminder to practice every day.

Professor John Conway, the inventor of the Doomsday algorithm, trains every day and finds the answer within a few seconds. Impress your friends and family with your amazing mental skills.

Use the Training Field to practice partial memorizing and calculation steps. Practice your skills in the Battle Field and beat Conway.

Characteristics of this game:
- Completely free of charge, available in the Play Store
- No annoying ads during gameplay
- Created in Unity 2018.2 by one person. Your feedback is highly apprecitiated, so I can further improve the app.
Updated on
Jul 17, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
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Ratings and reviews

4.8
107 reviews
Joe Eaton
January 8, 2022
This is outstanding minus some quirky behavior. Occasionally the explanation is just wrong. January never has 32 days. (Dev: I have a screenshot of your want it.) UPDATE: My ignorance. Thank you for the response. Second, the training automatically advances when you score high enough. It's simply too aggressive. More time at a lower level would be helpful without exiting and resetting. Despite those flaws, this is really good, especially for such a niche skill.
2 people found this review helpful
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Michel Peter Leonardus Werts
January 8, 2022
Thank you for your review. January 32 is indeed not an actual date, but is sometimes used as a 'virtual' date to calculate the day of the week, as also expained on https://calendars.fandom.com/wiki/Doomsday_algorithm. I understand your comment about the automatic training advances, I will think about a solution for that.
Jack Tenrec
December 31, 2021
The perfect app for learning and practicing the Doomsday method. Incredibly useful. Seems to have an issue with daily streaks not registering on my device, but thats a small gripe and doesn't effect the usefulness of the app, it's otherwise great.
1 person found this review helpful
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Justin Adams
December 26, 2021
So far, this is the best app I've found to train and practice the "calendar trick". I literally use it to practice every day. Each step is easy to understand and conducive for learning the method.
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App support

About the developer
Michel Peter Leonardus Werts
michel.werts@gmail.com
Warburgstraat 13 6372 CH Landgraaf Netherlands
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