I didn't believe there was a app for it. It's safe to disable using sbsettings. The only thing that may happen is a safe mode crash which will restart on it's own and allow you to delete whatever you added.
ok i'll tell u what i have and if u know which ones is safe to disable you'll b helping a lot
in Mobile Substrate Addons:
Activator
Downloader
LockdownPro
PreferenceLoader
SpringFlash
WinterBoard
libhide
sandcastle
sandcastleclient
threedeeboard
..........................
i disabled sandcastleclient just to try things out and nothing weird happened. which of these should i disable in order to increase the speed and performance?