Slod: interesting puzzle app for iphone, ipad

 

From the App Store: SLOD
'The rules are simple: swipe to swap the holes on the screen so that they match the colours of the moving balls. Match them up before the time runs out!'

  

This game is not hard - puzzle wise.  But because there's a time limit, it becomes hard!  The graphics are good.
https://itunes.apple.com/ky/app/slod/id1029541856?mt=8