Análisis de la app DayStone para 9 de diciembre

"Make every precious day count with 'DayStone.' Do you have important dates you never want to miss, like anniversaries with your significant other, family birthdays, or crucial exams and interviews? With 'DayStone,' you can calculate dates effortlessly: - Do you want to know how much time has passed since a certain date? - Are you curious about when a future date will arrive? - Do you need to know how many days are between two specific dates? [Function 1] Calculate the number of days between two specific dates. Simply select the start and end dates, then click the confirmation button to calculate the number of days between them. If you choose to include the start date, it will be counted as day 1. [Function 2] Calculate a future date based on a specific date and a given number of days. Enter the start date and the number of days into the designated fields, then click the confirmation button to calculate the resulting end date. If you include the start date, it will be counted as day 1. [Function 3] Calculate a past date based on a specific date and a given number of days. Enter the start date and the number of days into the designated fields, then click the confirmation button to calculate the resulting past date. If you include the start date, it will be counted as day 1. "I'm developing an app and would like the above script translated into English naturally."