積分ガチャ

The Integral Gacha is a service released on May 19, 2021, on the Oishii Sugaku website, which randomly presents 5 integral calculus problems from high school mathematics (Mathematics III). 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 147,193,200 gacha combinations (web version: 22,604,400 combinations)
2. Unlimited gacha spins, no time limit
3. Advanced only switch ((5) ensures that 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 problems answered correctly)
8. No ads
9. A complete list of all problems from beginner to advanced levels (including problems added to the web version)
10. Link to the improved "Delicious Mathematics Integral" page for the app (even those unfamiliar with Calculus III can start learning from scratch)
11. Calculation sheet function (basic version)

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

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