Currently Being ModeratedRe: Is it normal for the iPod touch 5th gen to heat up esp on the antenna area with the Wifi turned on?Jan 30, 2013 9:47 AM (in response to vinceistric21)
Heating during heavy CPU usage is expected and normal. However, the need to go over a fan is not normal. Still, what considering too hot is arbitrary and we cannot ***** over a forum what is hot and too hot.
At no point you should be feeling discomfort holding your iPod. If you do, then you should go see a Genius at an Apple Store.
As for battery life, it's all depend on your usage. Bluethoot, Wifi, Brightness and CPU usage may well deplete your battery in a day if all heavily used.
I don't know battery doctor but this is a really personnal choice. Personally, I don't see any extra tool than the % in the status bar.