As mentioned in the Pocket Games Thread, BFG: Leviathan now has a free demo on iOS and Android. If it's been the cost driving you off before, now's the perfect time to give it a go.
It's only the tutorial and a mini campaign, but it's a pretty good conversion of TT rules. It might be great for MP if you decide you like it after the demo, or just fun to slowly chunk through the campaign.
It also highlights some of the GW games library problems, whether it's publisher, developer or GW inspired. They just miss the point, even while coming close. Even when you've got a fully functional translation of TT rules directly to the electronic medium (which is what we all want), they decided that culling back the race list and fudging dice rolls for false difficulty was a "good idea". Writing good AI is difficult, but fudging rolls later in a campaign is especially noticeable when you're using d6's (I haven't got far enough in to see it, but apparently it's how they've done it). Adding new ship classes isn't hard, especially if they were added to MP for testing purposes first to save them writing actual missions/campaigns for them, but there hasn't been any move to do this at any reasonable pace either. Hell, I'd even forgive them if they proxied art resources until they could afford models for them, just like on tabletop. A text box and firing arcs is all you need. Christ, they could IAP races, ship types, campaigns, whatever to fund further development. But nope. 2 Races, and false difficulty.
So close, yet so far from what people want. And they wonder why even their fans aren't jumping on the bandwagon.
Still, it's free, so you can shake your fists with abandon in your spare time without it costing you anything. Maybe a larger player-base will get those problems fixed all the quicker. Even demo d/ls, not full copies, just to encourage them. Because it's really good, even while being "GW bad".