The Hundred Pushups iOS App
As of September 1st, 2014 there are no officially sanctioned Hundred Pushups iOS apps.
Numerous Pushups apps are available at the iTunes App Store, but this website is not responsible for their content, and cannot respond to any support questions.
If you're an experienced iOS App Developer and interested in creating an all-new Hundred Pushups app, feel free to contact me for more details.