KeepSafe - Keep your entire photo library safely stored in an encrypted private cloud.
Solaris Sky Calendar - An astronomy calendar right in your pocket
Navisens - Indoor & outdoor location without beacons, WiFi, or GPS
Sundial App - Sun & Moon times and alerts for iPhone, iPad, & Apple Watch
ebblink - pick one of your images, upload and get a link back.
Alpenglow - Never miss a incredible looking sunrise or sunset again