autokiller memory optimizer is not a task killer in any way that is mentioned above(go to xda developers, and read up on it). This app, can change the minfree settings that tell android when to kill off empty apps(there are 6 different levels of kill, foreground, visible, secondary server, hidden apps, content providers, and empty app). When the ram gets to a certain level, the minfree settings(which all android os's have), it shuts down the least important app, starting with empty apps(with autokiller, you can set the level yourself, which is great for a phone with limited ram). The experience I got from using this app, is far and away(with autorun manager, which changes oom levels), the best thing I could have done for my phone. Now I use Qtadb, a graphical interface for adb, and eclipse to permantly change the minfree settings. I keep autokiller on phone, because there is a setting to use noatime(a android os option, not part of autokiller app) to speed up the I/O(input/output) of the os. Autokiller does not save every setting upon reboot, but it's a good teacher, as to what your phone is really doing, and how your phone, coming from the manufactuer, is optimized(or how it's not).