I was looking for software for free that I could use on my PDA Dopod
D810 aka HTC P3600 which has inbuilt GPS. I came across:

http://users.bigpond.net.au/ian_pendlebury/mymad...

Provides tracking info and data such as altitiude, distance, time etc
unfortunately no HR ability.

Unsure on battery life as can't ride at present due to a hand injury
at the dam but a test in the car with the file saved to a kmz file
and emailed to my PC showed excellent accuracy with distance markers.