You can run it on both, however I have yet to try the palm application even though I have my old M100 laying around from my Pocketlogger days. I have a 133mhz laptop I use for it. Basically I'd advise using a laptop to actually do the tuning, and then maybe keeping a compatible palm in the glove box in case you are driving and something seems to be not quite right down the road, just for logging. Its nice how on DSMlink you can log stupid amounts of parameters such as 30 or so all at the same time, instead of just like 4 at a time or so on the pocketlogger.