I’ve tried the whereigo app but couldn’t be bothered with it. I found it really user unfriendly. You need a signal to load the cartridge, but after that you don’t.
I tried the houndtor one, once you are nearish the start coordinates the app will tell you what to do next. I kept losing the instructions without a way to go back a step in the program to re-read them.
Waste of time.
