PowerBOSS Storm App
Not sure what to think. I got the app for free so cost didn't factor in my buying (?) decision.
Wether it is actually saving battery juice by reducing cell tower searches is open for debate, I wouldn't like to commit either way.
Not noticed the warnings at 30%, 20%, etc, but maybe I need to tweak the permissions.
Final opinion: - may be worth $2.99 (which it is at the mo') but definitely not the nearly 10 bucks full price they ask.
PS Smartwifi is really cool - no unnecessary searches which is definitely improving my battery use.