I currently use The Photographers Ephemeris (TPE) app for predicting sunrise/set moonrise/set times and angles. I am interested in adding the Skyfire app which is an 'overlay' app to the TPE app. Skyfire predicts if there will be a colorful sunrise or sunset which could be really useful if it's somewhat accurate most of the time. I was wondering if anyone here uses it and how well it's done for you if you have.

