不定方程式ガチャ

The Diophantine Equation Gacha is a service released on December 1, 2025, on the Oishii Sugaku website. It randomly presents three Diophantine equation problems from Mathematics IIBC. This app version inherits the functionality of the web version and is further enhanced.

This app version has the following features in addition to the web version:

1. Increased number of problems compared to the web version; currently 9360 gacha combinations (web version: 2592 combinations)
2. Unlimited gacha spins, no time limit
3. Advanced only switch ((3) ensures advanced problems are always presented)
4. Additional information included (background knowledge, sources, and other related information are included)
5. Timer included (can measure up to 100 minutes after spinning the gacha, usable for time attacks)
6. New problem detection function (can determine whether a problem is new or previously presented)
7. Marking function (can mark correctly answered problems, etc.)
8. No ads
9. A complete list of all problems from beginner to advanced levels (including problems added to the web version)
10. A link to the improved Diophantine Equations page for the app (even beginners can learn from scratch)
11. A scratch paper function (a simple one)

For first-time users, please try the free web version within Delicious Mathematics by searching "Diophantine Equation Gacha" on Google.

Please also search for "Diophantine Equation Gacha" on X (Twitter).