ObsCalc is an application for obstetric calculations. It can calculate Expected Date of Delivery (E.D.D.) from Last Menstrual Period (L.M.P.) and vice versa. It can also calculate the current maturity of the fetus by date and by U.S.G.

It is primarily targeted towards healthcare professionals but it can be useful to everyone.

A full demo of ObsCalc is available at https://app.agnibho.com/obscalc/

Please try out the free demo from the above website first and purchase the app if you are satisfied with the features.

ObsCalc is a libre software under GPL v3. The source code is available at https://code.agnibho.com/obscalc/