This is an app for students to practice and get skilled in basic math.

It helps kids to learn all the basic math facts corresponding to addition, subtraction.



UNLIMITED ACCESS SUBSCRIPTION
- Length of subscription:One Month Subscription, Six Months Subscription, One Year Subscription.
- Subscriptions are billed seasonly at the rate selected depending on the subscription plan.
- Subscriptions auto-renew at the cost of the chosen package, unless cancelled 24-hours in advance prior to the end of the current period. The subscription fee is charged to your iTunes account at confirmation of purchase. You may manage your subscription and turn off auto-renewal by going to your Account Settings after purchase. Per Apple policy, no cancellation of the current subscription is allowed during active subscription period. Once purchased, refunds will not be provided for any unused portion of the term.

-Terms of Use:
https://damonchen117.github.io/diandubi/protocol.txt
-Privacy Policy:
https://damonchen117.github.io/diandubi/privacy.txt