Superb! Fast to open; has key displays; three suggestions – Jupiter Guide Review

Simple, fast, and useful. Not sure what the paid $ apps that present Jove's moons have that this doesn't. Would be even better if: 1) It had a video mode for the moons rather than just step mode (min, hours, days). 2) It showed moons in the Red spot close up screen, too. After all, the button says "Details". 3) It included eclipses, transits, too.
Review by AstroPaul on Jupiter Guide.