zmNinja is the awesome and official mobile app for ZoneMinder. You need to be a ZoneMinder user to use zmNinja. zmNinja offers you a fabulous UX while easily accessing your security cameras, events and timelines. It even allows you to control ZoneMinder!
ZoneMinder is an incredible open source camera monitoring system and is used by many for home and commercial security monitoring. http://www.zoneminder.com
zmNinja needs ZoneMinder 1.34 or above because it uses the new ZM APIs.