Calculator! - No Ads Sci Cal

NO Ads. DON'T need to waste time on watching Ads, more focus on using this App.
Fully customizable user interface: Set your favorite wallpaper as you want, set your own color style of keypads! NO TIME LIMITS!
Support Dark Theme
The UI of this calculator app is fully customizable!
Tiny size, eazy to use!
Wallpaper：Choose your own favorite photo as the wallpaper.
Keypad Color：Yes! Fully customizable and make your own color style!
Keypad vibration, Keypard feedback sound, Calculation history, Thousand Separator, Decimal Places and more.
Your calculator, your style!
1.Subscription Plans：
---Monthly Subscription---
Period：1 Month
Price：$1.99
---Monthly Subscription---
Period：3 Months
Price：$4.49
---Yearly Subscription---
Period：12 Months
Price：$14.99
2.Others:
---Payment---
Payment will be charged to your Apple ID account at the confirmation of purchase.
---Auto-Renewal Subscription---
Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase.
EULA：
https://docs.google.com/document/d/e/2PACX-1vT0RcZrwNcRuZb3RifVYpfkoRfxRnzyeF6WDNuBnrQgclHEkqnTjj7snAolO9z7KT8Cde4y5gAVxhy2/pub
Privacy Policy：
https://docs.google.com/document/d/e/2PACX-1vQ0UeU63kke5uepD1Z3Rw2tsqjpF0ybv8enBCA8IpIe2gOWsVEZruRisXYAMiy8QCJRdSBhjOMsKqwT/pub
Subscription Support：
https://support.apple.com/billing