I smoke rollies too, but much more than 5 a day. I sometimes wake myself at night with the noise I make breathing - disgraceful state of affairs. I have given up in the past, for 7 years once, but then cheap fags on holiday started me off again. Blazer you mentioned something about apps. I take it by that you are meaning the cartidge you attach to the actual device? Can you attach any strength of cartridge to any make of device i.e are they all the same standard sizes?