Years to days and days to months Calculator

Need Iphone and Android App Very Simply Very Basic Six buttons and against them six numeric number (value1) when pressed one number would decrease created excel file took me 10 mints to make excel files need same in android and iphone app need source code and also working on all devices Numaric numbers will appears on the bases of the information provided . Questions to be ask Your date of birth lets say 7Aug 1977 So convert that date into days and than days will be calculated with some numbers that will bring (value1) very very simple Formula Apply should provide source code and some documentation budget is $80 for both apps android and iphone if u can do both contact other wise please stay away thanks