App Profile: Hundreds Chart

The Hundreds Chart is a 10x10 grid where each cell is filled with numbers from 1 to 100. This chart helps preschoolers and students understand number order, recognize patterns, and grasp addition and subtraction within 100.
The Hundreds Chart will randomly select some grids from the 100, giving the number in one grid. The user needs to fill in the missing numbers correctly.
【Features】
>>Adjustable difficulty and number of questions, suitable for early education and after-class practice.
>>Randomly generated grids, different every time, unlimited practice.
>>Option to enable mistake reminder mode, review mistakes immediately for better understanding.
>>Record practice time, automatically calculate answering speed, motivating users to improve.
【Auto-renewing Premium】
Hundreds Chart offers the following auto-renewing products
>>Subscription service: Monthly & Quarterly
>>Subscription cycle: 1 month (auto-renew), 3 months (auto-renew)
>>Payment: Charged to your iTunes account after purchase confirmation
>>Users can manage subscriptions and auto-renewal in account settings.
>>Cancel subscription: To cancel, turn off auto-renewal in iTunes/Apple ID settings at least 24 hours before the current cycle ends.
>>Renewal: Your account will be charged within 24 hours before expiration, extending the subscription.
【Lifetime Premium】
>>Service name: Lifetime Premium
>>Subscription cycle: Lifetime
>>If you purchase the lifetime Premium membership from the App Store, it will be a one-time payment for permanent access.
>>Privacy Policy：https://bst.mogenkeji.com/contract/privacy.html
>>Service Agreement：https://bst.mogenkeji.com/contract/guide.html