Simple and effective I've used this to find planets and comets. The visibility chart is great for planning observing sessions. It's nice that it gives you RA and Dec numbers you can punch into a telescope controller to find a comet or other minor object.
4.10.3 - Layout bug for tablets fixed
4.10.2 - Close button, distance in km, bugfixes
4.10.1 - minor layout improvements
4.10.0 - Turkish language support.
4.9.0 - Traditional Chinese support, other language updates