UFO: Hotsea (TBS game) ->currently free
I had this on my device, never had the time to give it much of a once through. Nice squad based TBS game, overshadowed by some of the better known ones; Hunters, Tactical Soldier, LBWG and its sequel, etc. Not very long, IIRC, but iaps are not necessary...again, IIRC.
If you want to friend me on GC,tell me you're from TA and include your screen name.