Through several generations of Android I had problems with battery life. However I never had problems with apps like you describe. Since my Note 4 I cannot complain about battery life, and now that iPhone has taken on some Android features like multitasking, friends I know with older iPhones are having battery issues (including one with an iPhone 5 that just had the battery replaced). So it was a tradeoff of emerging features, where Android had included many more from the start (Apple is more careful/conservative) and they are at parity now.