If your four stringed ukulele has more strings that you can handle, check out the FretPen. It’s a Kickstarter campaign that will start on April 22, for a one-stringed guitar. It interfaces with a smartphone, which by the little info we have so far, might just be iOS devices. The video shows that the pen snaps into a guitar shaped body that has a four button D-pad that allows you to change notes so that you can play actual songs on this thing. No word yet on how much it will cost, so sign up at http://signup.fretpen.com/ to be notified when the project goes live.