Exactly what the title says, I can only get one, and can't really decide. I wanted bugdom, but then Pangea themselves said that Otto Matic is their best game. Is it personal preference?
I own all the Pangea iPhone apps and Otto Mattic is by far the best. It's a bit more purpose driven than Bugdom 2. Use the Search here on TA for Otto, I wrote a thorough review about it.
I voted for ottomatic because I didn't like Bugdom 2. It just overall didn't like it. It has slow framerate the controls are hard to get used to and nothing really interested me about it. Many people that bought both said that ottomatic is better
definitly otto matic, if i remember correctly it was on the pc first and was one of my first games ever