Czasem sprawdzam co w pamieci piszczy przy pomocy
> tej aplikacji:
> https://play.google.com/store/apps/details?id=nextap
p.systempanel
> Na moje potrzeby idealna.

SystemPanel is not an automatic task killer. It has been
well-established (by the Android documentation and direct communication
with the Android engineers) that randomly or periodically terminating
arbitrary tasks in the interest of saving memory will NOT yield a
benefit in performance or battery life. The only benefit you will see
from an automatic task killer is if it happens to terminate misbehaving
apps. SystemPanel provides a better solution to this problem by showing
you which apps are consuming CPU in the background (over time) with the
"System Monitor" feature. It is then recommended that such applications
be reconfigured or uninstalled (or perhaps corrected by filing a bug
with the offending application's author).