I've used it on my iPhone for a couple of years or so. It's small, doesn't need an external GPS source and works a treat, plus you just bung it in your pocket at the end of the flight.
I have the georeferenced Pooleys on it which can be hard to read but I just print the plate out before I go. I have an iPad mini too with it but TBH its not worth the faff of trying to mount it somewhere where it's not in the way and I invariably forget to take the GNS 2000 out of the plane.
I use one of these
to stick it on the side screen, it's the stickiest mount I've ever found, absolutely bulletproof.