In the extended version of the app - ISS Tracker Pro additional options available - real-time solar activity, on-line telescopes and complete lack of advertising.
Sometimes translation may be interrupted. It depends on the antennas signal, or when the station leaving to the dark side of the Earth.
Both the standard and pro versions don't work with the video streaming, it just greys out. The Nasa app works fine.
One of the best apps out there