I suggest you to don't pay anything to spy your friend/girlfriend, Spouses, Children or Employers.

i use the keylogger Bosspy to spy my girlfriend before to marriage her.
you can search on google if you are interesting about that.

have a fun

Mobile Spy allows you to remotely monitor actions on your phone and read log with the online account. Here are some tips: http://www.how-to-spy.com/how-to-spy-on-a-cheating-spouses-mobile.html

spybuble is a reliable one I know of for cell keylogging
www.adiguo.com/phone-spy-reviews.html