I've an iPhone 5 purchased in January 2013 with a new battery from iFixit from this past February and there are just certain apps that absolutely kill battery l

I've an iPhone 5 purchased in January 2013 with a new battery from iFixit from this past February and there are just certain apps that absolutely kill battery life regardless of which release of iOS 8 I use. Though Apple has made their new software versions for their new hardware I think overall performance since early iOS 6 releases has been consistent on iPhone 5+ with the various exceptions for bugs. The problem I see is with devs for large deployments (Google, MLB, Yahoo, etc.) ONLY take into consideration the new hardware. My MLB.tv subscription which includes At Bat app has become such a drain on my battery since the start of the 2015 season. Even streaming radio broadcasts will use 50% of my battery after 5 or 6 innings with the screen locked as in NOT DISPLAYING ANYTHING! 2 years ago a Red Sox/Yankees game (4+ hours) would use maybe 20%. Weekdays, I get a couple hundred emails plus 10-30 calendar notifications per day from personal and work Google managed domains. Easily that takes up 20-30% over an 8 hour workday with all the fetch. Previous employer with Exchange and push using Active Sync was maybe 10% usage per 8 hours. Weekends of course I rarely see the drain at all in regards to mail. Point is, I know I'm at EOL with iPhone 5 but I at this point can't really blame Apple as stock (and on weekends unless streaming a ball game) battery life is as consistent as the day the phone was purchased.