This very useful app is broken on iOS 5 (the "select mode" interface is unusable). I used this all the time on my 3GS and would pay again if someone would create a clone, preferably with bugs fixed (e.g. option of Toggle/ON/OFF for settings, where it currently just toggles even though it says ON/OFF). Some people want a time duration for toggle modes. See discussion here:
SBSchedule – Your ultimate SBSettings Profile manager | iPhone News, Apps, BigBoss, Guides & Jailbreaking