I've been working this week on Ant Planet. Since the game is relatively new, the main goal is to iron out any rough edges in the basic game functionality before I add anything new.
I cut the vertices down with Modo on the truck model by roughly half. I reduced some of the other background models too. This gives the game a performance boost and looks 99% the same. If the model is drawn small your not going to see much improvement with a high vert count. Should run better on the 3G phone. I also brightened up some of the colors.
The other main issue was aligning the turret better when the player shoots ... a complicated math problem because the truck might be on a slope while it aiming. But the math issue is resolved.
For kicks, when the truck drives slower the trucking driving sound's gain will lower -- cool if you slow down going up the ant hill. Seemed odd before going slow and having that sound going.
Otherwise, minor fixes.
Think Apple has changed the updating policy. Looks like it takes roughly 2-3 days now where before it was two weeks. Testing and being careful before submission is really important. You will not have a week to realize there is an issue. Gave it a whirl on my devices and things appear much better. Pretty focused update on the current games rough edges.