APKPure Appを使用する
Date + Days Calculatorの旧いバージョンをダウンロードすることが可能
例：2018年1月5日+ 50日= 2018年2月24日：日から追加＆減算日数
Ex. 05 Jan 2018 + 50 Days = 24 Feb 2018
Get new date by adding or subtracting days from any date.
This is a great tool for anyone who is interested in date related operations in Android device. it's Free, fast, easy. It provides helpful information about selecting date for more than 100 years and also it will give you expert knowledge and point you in the right direction to plan future.
This is simple but very usefull app to get date after or before some days. In this app you can easily get new date by adding days in to any date sameway you can subtract days from any date.
This app is very usefull for civil engineers, medical field, teachers etc.