1. Home
  2. 📚 Education
  3. Doomsday Method | Mental Game
Doomsday Method | Mental Game

Doomsday Method | Mental Game

Master an Extraordinary Skill

2 ratings
2 reviews
🎮 Games
📚 Education
🎈 Casual
🧠 Trivia
Free

Details

  • Released
  • Updated
  • June 12, 2023
  • September 1, 2026

Features

Developer

Leon Grimmeisen
✨Promote your app ✨
Doomsday Method | Mental Game screenshot #1 for iPhone
Doomsday Method | Mental Game screenshot #2 for iPhone
Doomsday Method | Mental Game screenshot #3 for iPhone
Doomsday Method | Mental Game screenshot #4 for iPhone
Doomsday Method | Mental Game screenshot #5 for iPhone
Doomsday Method | Mental Game screenshot #6 for iPhone
⭐2
Reviews↘︎
📝2+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓8 answered
FAQ↘︎
📦~ in 3 months
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

Master the art of calculating weekdays for any date with this comprehensive educational app. Learn a proven technique, practice with interactive exercises, and track your progress to sharpen your mental arithmetic skills.

✓Learn Doomsday Method principles
✓Interactive examples and tips
✓Dedicated training mode
✓Progress tracking and statistics
✓User-friendly interface
Show original description

What's New in Doomsday Method | Mental Game

2.1.1

September 1, 2026

Thank you for using the Doomsday Method App to learn and play Conway's famous mental math method! What's new in 2.1.1: - smaller bug fixes

More

User reviews

Most RecentHighest RatedLowest Rated

Overall good!

A good trainer. Some dates you get correct, but the statement below says a different day of the week. Small bug I’m sure is an easy fix.

Would love an Apple Watch version too!!!
Zatchmo1988Zatchmo1988

Response from developer

Thanks for the review and for catching that! You're right, there was a bug affecting some date calculations. Great news: I just released an update that fixes this issue. Give it a try and let me know if everything checks out now. If you're happy with the fix, I'd really appreciate it if you considered updating your rating, it helps a lot as a small indie app! 🙏

Overall great!

Updated review - works great 5 stars!

Would love an Apple Watch version too!!!
Zatchmo1988Zatchmo1988

Response from developer

Thanks for the review and for catching that! You're right, there was a bug affecting some date calculations. Great news: I just released an update that fixes this issue. Give it a try and let me know if everything checks out now. If you're happy with the fix, I'd really appreciate it if you considered updating your rating, it helps a lot as a small indie app! 🙏

Developer apps

WorkoutPulse | Tabata Timer
WorkoutPulse | Tabata Timer

Interval & HIIT Workout Timer

💪 Health & Fitness

(3)

Free
Health Pulse
Health Pulse

Your Health Goal Widget

💪 Health & Fitness
Free
Tick - Habit & Task Tracker
Tick - Habit & Task Tracker

Build Habits. Finish Tasks.

📊 Productivity
Free
In-App Purchases
Busfahrer Partyspiel
Busfahrer Partyspiel

Das legendäre Kartenspiel

🎮 Games
Free
In-App Purchases
Leben in Deutschland Pro
Leben in Deutschland Pro

by Leon Grimmeisen

📚 Education
Free
See developer apps

FAQ

What is the Doomsday Method app?

The Doomsday Method app teaches you John Horton Conway's technique for calculating the weekday of any given date. It offers learning resources, practice modes, and progress tracking to help you master this skill.

How does the Doomsday Method app work?

The app guides you through understanding the Doomsday Method's principles with engaging slides and interactive examples. You can then practice calculations in the training mode and monitor your improvement.

Is the Doomsday Method app suitable for beginners?

Yes, the app is designed for curious learners and provides a user-friendly interface to make mastering the weekday calculation technique accessible to everyone.

Can I track my progress in the Doomsday Method app?

Absolutely. The app features detailed statistics to track your performance, highlighting areas of strength and suggesting areas for further practice, helping you see your skills improve over time.

What devices does the Doomsday Method app support?

Currently, the Doomsday Method app is supported on iPhone devices.

How often is the Doomsday Method app updated?

The latest version is 1.1, and the app was last updated on April 28, 2026. This indicates a recent update, suggesting ongoing development and support.

Does the Doomsday Method app have ads?

No, the Doomsday Method app is ad-free, providing an uninterrupted learning experience.

What is the age rating for the Doomsday Method app?

The Doomsday Method app has an age rating of 4+, making it suitable for a wide range of users interested in learning.