I use the app occasionally, and it's only used 2% of my battery on average over the past 7 days, according to the battery section in my settings. I turned off b

I use the app occasionally, and it's only used 2% of my battery on average over the past 7 days, according to the battery section in my settings. I turned off background refresh. Strange that the author is going through a guesstimate process when there's a built-in tool that'll tell you exactly how much juice an app uses, and if it's mostly from background activity.