Anyone have the Learning Leap (frog) potty cartridge?

[kristine_elen]

Jack received Leap as a gift and he's pretty into it. (Lost interest for a while, but it was packed away for a move and when I brought it out again, he was much more into it.)

Just wondering if anyone has experience with the potty cartridge. Does it seem helpful or is it just ridiculous? I've not heard it at all.

Thanks!