Math Basics Trainer - SOYOGI

All content in this app is in Japanese.

A quiz app for relearning the mathematics taught in Japanese elementary school (grades 1 to 6) and junior high school (grades 7 to 9). About 1,050 original four-choice questions are grouped into nine levels and, within each level, into units that follow the national curriculum. Start from any level and any unit you like.

- Unit practice: pick a level and a unit, answer one question at a time, and read the explanation right away
- 10-question challenge: ten questions from a level in a row, scored at the end, with your best score saved
- Review mode: retry only the questions you got wrong
- Reading mode: browse any question's explanation directly

Easy mode (turn it on from the home screen; it works in unit practice and review, while the 10-question challenge stays the same):
- A wrong choice simply fades out, with no cross mark, and you can choose again from the rest (questions you had to retry also come back in review mode)
- Hints: reveal the key point and then the steps of the explanation, one at a time. Hint use is kept in your study records
- An on-screen calculator with +, −, ×, ÷, parentheses, and decimals

Every question comes with an explanation that starts with the answer, then walks through the reasoning, common mistakes, and a one-line takeaway. Geometry and graph questions include figures.

Features:
- Furigana (reading aids) on all kanji in the elementary-school levels, with a switch to hide them
- Choices are shuffled every time, so you cannot memorize positions
- Dark mode, following your device setting
- Works offline once loaded. Your study records stay on your device only; the app never sends data anywhere. No account needed

All questions and explanations are our own original work, written along the Japanese national curriculum. This app is not affiliated with any school, textbook publisher, or examination body.

Developer: Kaigo to Shien no Soudan-dokoro Soyogi (a non-profit support organization in Japan)