Zenfone 5: Is it good to use with a 3rd party battery saving app?

I'm finding the battery life unsatisfactory. If I were to install a 3rd party battery saving app would it conflict with the Asus Android OS?

If not, are there any suggestions as to which is the best one to use?

Sent from my Nexus 7 using XDA Free mobile app

Suggestion 3rd party camera app for Custom Rom

http://forum.xda-developers.com/redm...e-sim-t3197441

The custom rom in question is above.
Could anyone kindly suggest a camera app that takes video?

Thanks in advance for any help given!