I use green power premium, works wonders. Juice defender used to work well but hasn't been updated since almost 2 years. I haven't personally tested but I believe it isn't optimized for jellybean or more recent versions for Android, which is a shame because it has more features then most of the similar apps nowadays.
But like I said, green power does the job.
Greenify if you wanna stop apps sucking unneeded stuff, battery saving apps are kind of a grey area, some people are for them, others against. I used one only and stopped after around a week cause it had no effect IMO.
I always hear news about the juice defender app, but does it work? and do we need it on our galaxy note 3? which already has great battery life...
please let me know your opinions, I also noticed there's many types of juice defender app.
You don't need battery apps on this phone as it already has great battery life.
But if you still want to stop apps from sucking juice, just go in the Application manager and "disable" or "Force Stop" the respective apps. After this they wont appear in the App drawer and most importantly will not ruin your battery life.
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