I have had it installed a few times and keep deleting it because I dont find it useful enough to take up 3.8MB of room but a lot of people swear by it & love it. As far as slowing the phone down, I never noticed any difference.
Good question aand thanks for the answer. I also downloaded it and was not sure about the battery. It is a large sized MB app. Which of the tools did you find useful? Thanks.
I've been using it since it came out for free. I like it. The functions I use most are the home screen memo, quick silence, and the wi-fi file transfer.