I tried using this and I couldn't figure out how to use it. Is there a section that says exactly what app is actually keeping your phone awake? Otherwise, at least for my situation, it listed some process location that had no obvious related app and when clicked or long-pressed, did absolutely nothing to show any extra information. The funny thing is that when I copied the info, I got a notification saying "[bar-name] copied," so when I pasted it I expected the percentage or numbers or something to show up. Nope, it pasted just the name of the bar.
I must be using it wrong.