I never liked the tracker style, even from WAY BACK WHEN doing
  MOD files. It's weird 'cause I love working with spreadsheets...
  and the standard tracker interface *is* a spreadsheet.... just
  without the copy/paste/ fill-down values features.

  But I like the Pixitracker - sooo fast and easy.

  I was standing in front of Publix today (supermarket), waiting
  for 10 minutes. I downloaded the iOS version and by the time we
  were ready to go, I composed a song. [youtube id="W98m3HpUvzU"]
  It's like a musical note-taking machine. That's what I needed.
  I'm not writing long songs - I don't even USE any music
  composition software on the computer. I use Audacity a lot...
  but nothing that makes music... I don't like fiddling around. I
  just want to get the idea out of my head before it's gone, and
  then DONE. Thought collector. I'm excited 'cause I've literally
  waited decades for something with these kinds of ergonomics.
  And yes, it's similar to Mario Paint. That's why it's so quick.

  I just discovered it this morning. Probably why I'm still so
  enthusiastic tongue emoticon