Solaris Sky Calendar - An astronomy calendar right in your pocket
Prezi - Welcome to Prezi, the presentation software that uses motion, zoom, and spatial relationships to bring your ideas to life and make you a great presenter.
Sundial App - Sun & Moon times and alerts for iPhone, iPad, & Apple Watch
Google Slides - Create a new presentation and edit it with others at the same time — from your computer, phone or tablet. Free with a Google account.
CARROT Weather - An eerily accurate weather app with hilarious forecasts
Keynote - Keynote for Mac, iOS, and iCloud lets you make dazzling presentations. Anyone can collaborate — even on a PC. And it’s compatible with Apple Pencil.