From https://www.reddit.com/r/amateurradio/comments/3u2n3g/a_satellite_tracking_s...

http://satsat.space/

"I've just published a side project called SatSat http://satsat.space, it predicts passes, it's free (with ads), and can work totally offline, predictions and maps are done on the device. It also displays frequencies for the beacons. Comments are welcome, based on interest, I may add more features like doppler at start and end..."

John, KG4AKV