Review app that can be used with Gakken study reference books on sale at bookstores!

[Supported books]
"Saito's world history B one question one answer complete coverage version"

[App Features]
■ Double effect with books!
The reference page of the book is displayed for each item.
You can use it effectively together with books, such as “Review the previous and next items together in books when you are not good at it” and “Use the app to solve the wrong items in the books repeatedly”.

■ Can be used in different ways according to the purpose!
In addition to the same layout as the table of contents of the book, you can also work on problem display by "importance".
You can study by switching the question method according to the purpose, such as “same arrangement as books for the entire review” and “by importance level for measures immediately before the entrance examination”.
* You can also use the genre-specific question function for a fee. (In-app purchase)

■ Effective use of shredded time!
The key to memorization is “repetition”.
Since you can work repeatedly in a game-like manner, such as holidays and school hours, you can easily repeat your knowledge.

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If the app does not open, the following may be improved.
・ Launch the app in a good communication environment
・ Restart the app
・ Increase free storage space
・ Reinstall apps
・ Turn on mobile data communication