Is there an iOS app that measures/reports the battery charging current? I suspect my fake lightening cable charge my iPhone 5 much slower than my original lightening cable on the same charger. Is there an app that will display the current battery draw/charging current and also plot it over time?
The battery doctor HD app by KS moblie tells me the charging current for my iPad 2.  However the battery doctor app for iPhone 4s does not appear to give this information.