You can also try the tTorrent app. Free version in Google Play has ads and download speed limit 250kb/s, but the is no ads and limit in Pro version. This is not a problem to find a cracked version of the same PirateBay, so you can try to install it. IMHO - the best one and most stable app on android. Though there are few reviews about problems with seeding in Google Play, i haven't noticed any troubles on my tablet (Wexler Tab A742)