You will need to download the cartridge here.
Smartphone users will want to download the Pocket PC cartridge.

Other things to be aware of with wherigos:
You may have to scroll down to see all the Message.
Hints are given in Messages and Tasks.
Updated cartridge as of 09/29/2017. Should solve the freezing issue on the first zone.
Rating is for muddy trails (sprinklers during the summer), geese pellets, and the fact that the wherigo software does not always send you in the direction you're supposed to go. Zone titles should help you out. Just remember that if your compass needle points you into a busy street - DON'T FOLLOW IT!
I extended the zone for the Tennis Courts into the Bowling area so you shouldn't have to cross the street (it works about 75% of the time) unless you want that cache that may be over there. If you do, use the crosswalk.
This is my first wherigo and I hope to make more! Let me know what you like and dislike about it.
Since you will be walking through the park for this cache, I need to add the PP&R disclaimer: "This cache complies with the geocaching policies for Portland Parks & Recreation (PP&R) properties. Please respect park hours when caching."
Remember the Completion Code is the first 15 digits if you decide to log it on Wherigo.com.