Alright, heres my semi-comprehensive review of both apps for all of you...
GAMEPLAY:
Gameplay is IDENTICAL on both apps. It's almost scary to see how alike both apps are as far as doing missions, buying property, having a timer for regaining energy, health, etc. I'm not sure which one came out first, but whoever came second DEFINITELY ripped the gameplay off of the original. EVERYTHING is the same people, i mean EVERYTHING. The only advantage to Mafia Live, as far as I can tell, is the fact the you have the option of inviting people through their email, which gives you $10,000. Anyone whose played both games knows how difficult it can be to start out making money and accomplishing missions in the beginning, and the fact that you can make $10,000 for every person you add through email on Mafia Live definitely eases the whole thing. Another major factor which makes people want to go to Mafia Live is the fact that iMob's gameplay has been compromised. As you play iMob, you realize almost everyone you fight with is cheating. People have billions of dollars (very difficult to do legitimately). It's almost ridiculous to be playing iMob seeing that your up against a bunch of cheaters. However this is not due to only the fact that people are purposely cheating, the game itself is severely glitched. You can easily find yourself going into negative money and the funny thing is that when you have negative money, you can buy unlimited amounts of things! Although both games have identical gameplay, Mafia Live is the obvious winner in this category due to several flaws in iMob.
AESTHETICS:
WOW. That's all I can really say about Mafia Live's graphics. The game looks like absolute CRAP. It really looks like someone made it on microsoft word using Times New Roman font. I played iMob for a long time and got used to the amazing user friendly interface. Lets face it, iMob looks AWESOME! If you take a look at the screenshots for both games, you'll see exactly what I mean. However, Mafia Live does promise an update which will supposedly have the "best interface you've ever seen." It's hard to believe that a game which is completely free (iMob) has an amazing user interface and the other, which charges $3 (currently) looks like absolute crap. Also, there's a slight lag on Mafia Live which can become extremely annoying very quickly. I know iMob has its share of bugs/glitches, but the lag on Mafia Live is totally different; it's horrible!
OVERALL:
If you don't want to dish out $3 for a game you may or may not like, download iMob and determine if its something your interested in. If you are, go ahead and spend the money for the higher quality of gameplay that Mafia has, but expect a huge downgrade as far as aesthetics goes.