Hypermunes Pregnancy Wheel App for iOS
'The Hypermunes Pregnancy Wheel App is an interactive pregnancy calculator and resource designed to be a quick, easy-to-use reference for on-the-go healthcare providers. Based on user input, the Wheel provides numerous calculations: expected delivery date, key trimester milestone dates, and a running tally of expected fetal statistics such as age, length, and weight. The Wheel also includes information about routine tests that are given during pregnancy, when these tests commonly occur, along with descriptions of the tests and why they are performed.'
This is a free app