This is a question collection app specialized for the high school subject "Information I", and is the perfect study tool for regular tests and university entrance common tests.

It includes a wide range of basic and practical problems, and steadily develops not only vocabulary memorization but also ability.
All questions come with detailed explanations, and some even have diagrams to help you understand.
We plan to add and change questions and explanations through updates, making it even more complete and sophisticated.

You can learn without missing anything in the mode that asks only unanswered questions, and you can overcome your weaknesses in the mode that asks only incorrect questions.
Furthermore, the bookmark function allows you to efficiently manage important issues.

Achieve success with efficient learning!

■About premium plan (regular subscription)
1. Contents of the premium plan
- If you subscribe to the premium plan, all ads in the app will be hidden.
・The number of times practice questions can be displayed per day is unlimited.
You can subscribe from the purchase button within the app.

2. Premium plan price
Premium plans automatically renew and incur charges each month.
You can check the price within the app or in the app store settings. Prices are subject to change without notice, so please check back regularly.

3. Subscription initiation and automatic renewal
Once you start your subscription, you will be charged immediately.
Subscriptions renew automatically. You will continue to be charged unless you cancel at least 24 hours before the end of the period.

4. Cancellation of subscription
How to cancel: You can cancel your subscription from the Settings app. For specific steps, please refer to Apple's support page (https://support.apple.com/ja-jp/118428).

・Terms of use: https://www.gravass.co.jp/apps/terms/
・Privacy policy: https://www.gravass.co.jp/apps/privacy/