The moderate and diet sliding scales aren't totally clear to me. But, I really, really like the "I ate something" / "I did something" buttons. I'd also make it

The moderate and diet sliding scales aren't totally clear to me. But, I really, really like the "I ate something" / "I did something" buttons. I'd also make it more clear that you can edit the weight, goal weight, and age. The question marks with text are helpful. But, ideally, no text explanation would be necessary. Anyway, interesting app!