People keep saying that Litchi will not work with spark, because there are no on screen controls.  So, my question is, will Litchi work with the spark, if I use a controller. Thanks!

I've flown my Spark with Litchi a couple of times. About the only thing that works  is basic flying. Both sticks work normally. None of the advanced modes work, waypoints, POI, etc. None of the buttons work, can't start/stop recording, take photo, C1, C2, etc. So, it's pretty much useless for now.