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Online security company AVG Technologies analyzed data from over a million Android users, and found that Snapchat's use of your camera, data, GPS, and more combined to make it the number one overall performance drain.
The app dethroned previous performance drain heavyweights like Facebook and Spotify. And it definitely explains why Snapchat sucks your battery life down so fast.
Though this analysis didn't take iOS users into account, it's probably not a rosy picture on that front either.