BatteryGrapher & BatteryPhone and All my Batteries do better for less!
The above will sort you and display exactly what is eating away at your battery the second may not be the most modern ui but it has a simple enough complication that updates both phone & watch % for nothing,All my Batteries is another gem of an app that highly customisable so you can add beats and other gear like Bluetooth speakers MacBooks iPads etc - literally is all your batteries and none of those require you to unbuckle your pants for a greasy dev to finger what he can out your pockets every 4 weeks! Subs for this type of app are a joke - deleted & wish the App Store had a block feature so you could not see certain devs or better yet switch off all those that now want subscribers for services that most offer free or for a one off small fee! Had to give it a star but it’s not worth that - avoid it!!! The three in the title are the best ones