I don't have battery problems with my 5x. If I'm not using mine much, it will last two days on a charge. Sounds to me like you may want to consider replacing your battery. A $5-10 new battery and ~15 minutes of your time, may be worth it.
If you get more apps (even if you don't always use them), those apps are allowed to drain all your battery. I'm pretty sure that's not the case on iOS.
(No, nothing is in my notification tray or scheduled.)
