There is no such thing as a Battery doctor as a App . It can not be done . Battery is a hardware . App is a Software . You can not optimize Battery with an App . Not possible
The only way of having a somewhat interesting battery monitoring 'app' is by jailbreaking: there are tweaks that can easily show you things like how many charged cycles you have etc.
There is no such thing as a Battery doctor as a App . It can not be done . Battery is a hardware . App is a Software . You can not optimize Battery with an App . Not possible