Runs on Palm devices including my Treo 650. No waiting around to log training details until I get back to the PC. Heck since I use the Treo as an MP3 player out on runs, and as a phone/camera/MP3(yeah I know..) while cycling... I have it with me on rides/runs.
It is pretty good, has seperate data entry for rides, runs, swimming, health, cardio workouts etc. You can add both locations, types of workouts etc. It has a useful and customisable set of graphs for all workout and other entry types. It can be set-up for Enlish/US or metric measurements. I'm only on the free 15-day trial and will either wrap and scrap after the w/e, or buy then.
I've find one thing that looks like a bug. Having set my units of measure to English(ie miles), it says in the docs you can change the unit by exercise type, so for swimming I'd like meters but it doesn't change. I've email their support and will take that into consideration when deciding to buy(or not).
You can try it to, its available here: