Is it actually playable without IAP?
I never understood why people hated IAP until this Baseball 12. I had only played games like Jetpack Joyride and Squids where most purchases were 99 cents and were generally useful.
I wasn't earning any money in Baseball 12 to upgrade my gear, so I clicked on the cash icon. It asked me if I wanted to hire someone to increase my cash. I said yes, then it brought up a "are you sure you want to buy this item for $19.99?" There are a few other stats that require hiring people, and I'm willing to bet the IAP price is about the same for all of them.