This is pretty fun and helpful for me since I'm taking a Physics course that covers this stuff.
It would be nice if when you want to add a resistor, ammeter, etc. that you could place it on a wire and it would delete the wire and put the object in its place.
Also a better way of entering values would be nice so that I don't have to click each one individually.
Anyway, it's an awesome app!
(Version 2.0)