そろばん問題集 1.0.22

This application is designed for beginners to intermediate users of the abacus, providing a platform for practicing abacus skills. It features four distinct modes: Beginner Mode, Practice Mode, Reading Mode, and Flash Mode. Beginner Mode allows users to learn the proper finger techniques and order of bead manipulation.

Practice Mode presents exercises in a drill format, enabling users to practice for abacus certification exams either with the on-screen abacus or their own. The on-screen abacus operates smoothly, and answers input via the abacus are automatically assessed for accuracy, eliminating the need for separate input.

Utilizing Reading Mode facilitates study in mental arithmetic, offering a unique advantage not typically found in conventional printed materials. Additionally, Flash Mode allows users to engage in flash mental calculations.

Exercises are categorized by specific areas: addition and subtraction (mitori-zan), multiplication, division, and mental calculation, allowing users to focus on overcoming their weaknesses effectively.

The application covers all questions from level 10 to level 1 of the All Japan Abacus Federation, with a continual flow of new problems ensuring users avoid repetition or frustration from difficulties encountered in previous attempts.

Subscription Information

• Subscriptions can be purchased through the "Store" button on the main screen, providing an option to remove advertisements.
• Pricing: Advertisement removal is priced at 280 yen/month with monthly renewals.
• Restoring Subscription on Device Change: Users can restore their purchased subscription during device changes (Store -> Restore). Ensure you are logged in with the same Apple ID as when you made the purchase.
• Checking and Canceling Subscriptions: Users can verify their next automatic renewal timing or modify settings via Settings -> Account -> Subscriptions.
• Automatic Renewal Billing: If automatic renewal is not canceled more than 24 hours before the contract period's end date, it will renew automatically. Billing occurs within 24 hours after the contract period concludes.
• Important Notes: Other cancellation methods are not accepted. Cancellation requests for the current month are also not allowed. Billing is processed via Apple ID accounts.

Terms of Use