Honestly, baseball is probably the last thing I want to think about right now, given that my Cubs just finished the season with 101 excruciating losses. But if you still enjoy the crack of the bat against the ball, Boomtime Baseball (free) might work for you. While it has some issues, it will at least provide you with that great feeling of knocking baseballs around in a classic era.
Unfortunately, Boomtime Baseball doesn't go for the whole game: It's a series of minigames, most of which just involve you hitting pitches. But the hitting mechanic is rather fun. You swipe down the screen to power up and aim, and then let go to swing hit when the ball comes through. It doesn't really feel much like baseball -- it's more like