Been trying out the free version of Cascable camera remote for Fujifilm cameras (Canon, Nikon, Sony & Olympus also), on my iPhone. It works really well, once you get it connected that is. There are settings in there for time-lapse and a calculator for serving there max time your shutter can go when shooting stars, and wanting sharpness and another calc for using ND filters. Also it can embed geotagging into the image although that is an easy workaround if you have a phone with you anyway. It's a nicer UX than the Fuji one.
Edit: One other handy feature is you can set your camera clock to the time on your phone, and that is handy if you shoot events with more than one camera. I know for me, at weddings, I have five cameras to work thought the files from so having the clocks set at the start is a big help when working through the different sections of the day.
There is a pro version with lots more features but at €32 I'm not sure I'll be trying that one out.