60,000+ downloads, Amazing to think that my little app has helped so many people :-)Easy to use single screen interface, Undo/Options press the menu key, NO ads ever, source code on web site. This app is dedicated to my son Arthur who arrived 2.5 weeks early, before I had a chance to write this app, doh!All the best for your labor, this contraction calculator is free but please let me know if is useful.Made in New Zealand