Content rating
Everyone
0+
Downloads
Content rating
Everyone
Learn more
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

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

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)
Relearn school math (grades 1-9) in quizzes with explanations. Japanese only.
Updated on
Sep 6, 2026

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
    Learn more about how developers declare collection

What’s new

Published