Fast-Calculator app analytics for December 23

Use more efficient interaction design to make it easy to use. - Subscription payments will be charged to your iTunes account at confirmation of your purchase. - Subscriptions will automatically renew and payment will be charged to your iTunes account unless auto-renew is turned off at least 24hours prior to the end of the current. - Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ - Privacy Policy: https://weibo.com/7772422492/4790781086536792