Hi peeps, I am going to Japan in September and had drew up a travelling plan for myself. But the problem is I planned to walk at 90% of the time so my question is:

1) Are there any apps for iphone that works like GPS but does not require wifi or data to guide me to the location from my current location?

2) Or at least any ways to make sure that I am in the correct direction?

Because my NESW is not very good you see I am afraid that while I thought I was walking to Ginsei I was actually walking all the way to Tokyo Dome and things like that happen.