This is an app for insurance branch agency (BIMEH ASIA) which is located in Tehran-Iran, so you can declare some formula in this app, therefore, the app be able to calculate your formula. Also, you can declare some pages and on each page, you can declare some variable which can be used for formula. The formula is included plus, minus, times, divided by, IF and etc.
The following lines depict the technologies have been used in the app:
The images below are shown the figures of the app: