Ive been eyeing up the chip for my gps for awhile. Ended up buy the Hunt app this year. Figured it was a cheap way to get a feel if I liked the product. Also its much easier to use, easier to see, and gives aerial views. Running it in airplane mode helps save the battery. Cant speak about the GPS draining the battery since I usually just turn it on to verify my position and then close it. If you are worried about having issues, carry paper maps as backups ... which you should do anyway.