Which Apple app is perfect for saving battery?

I recently bought an iPhone 5c and the battery dies extremely fast. I see a lot of apps but I think all it dose is just tell me what is using my battery usage at the moment. I want a app that actually saves battery by doing what it has to do save battery.

Battery doctor is amazing and is actually for a lot of smart phone devices and tablets. I really recommend you should try it! I've been using it and it saves me at least up the maximnum to 4 more hours of battery life! It is also easy to do! Try it!

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