This is a simple calculator app to calculate estimated date of delivery and due date/by date from last menstrual period.This app is especially targeted for medical students and health professionals who work on Obstetric and Gynaecology OPD.Calculating the EDD and By Date is time consuming especially in OPD setting.By using this app you can calculate both within a second.Here are two methods of calculating it.One is new method where you can calculate exact due date from calendar months ie.it calculate each day from individual month and show data in weeks.While in conventional method 1month is equal to 4weeks and 3 month is equal to 13weeks.Conventional method is usually used in OPD setting for fast calculation.Error of +/- 2days is expected by using conventional method in comparison to new method.Even with our great efforts there can be bugs and errors.Please feel free to report us.And please kindly review our app in play store.