Compass is another brand new awesome feature. You can also see your current location on a map by swiping to the right. Calculator and time are still part of Toolbox with the awesome speech recognition feature! We also added today extension (widget). Performing calculations are​ simpler than ever. You can find some open source information on Github/NeilNie

Apple Watch:
This app is also capable with Apple Watch. You can do simple calculations on your risk without pulling out your phone from your pocket. Simply select the number and force touch the screen to bring up the calculation menu.

Credit:
Developer: Yongyang(Neil) Nie.
Graphics Design: Yongyang(Neil) Nie.