I use Amazon Cloud Drive to backup my photos, works great BUT Looking at memory usage today I noticed that the Amazon Cloud Drive app was using 241 Mb and 213 Mb was for Data. Fourth largest user of space. Since it is supposed to store my photos on the cloud this surprises me as my Photos and Camera usage is only 172 Mb. I uninstalled Amazon app and re installed the app. It now takes up only 41.7 Mb but still shows all my photos that are on the Amazon cloud. The app itself on the App Store claims to use only 21.7 Mb. I've noticed such odd behavior with the Google Search app as well and Facebook. It seems like their caches must get clogged with stuff and short of re installing them there seems no was to clear the cache. Anyone enlighten me on the what and why of this? Do I just have to routinely re install certain poorly designed apps?