I know that the EASE tools work with the Palm and I think the PocketPC. The trade-off is less functionality than the PC version. I am thinking about one too. The PDA version seems easier to use due to the form factor but I think that I would rather have the more full featured version that the PC version delivers.
As Charley noted the Ease scan tool works with the Palm Pilot and the Pocket PC. Contact John at www.teamzr1.com for more information. I beleive he has tested it and can tell you how well it works as compared to the full blown PC version. There is also a wireless PC version out now.