Tacomaboatguy,
I didn't know about this App, because I am an iPhone user. I'll have the wife download it to her table, which is a Samsung. We'll run it side-by-side with GAIA, which I have on the iPhone and on my laptop.
I can get you from outside Spokane to Boise, 95% on dirt, County, Forest Service, and/or Fire roads... What's bringing you to Boise? There's lot's to see in Eastern Wa. and Eastern Or., It's getting across the Snake that puts you back on pavement.
What time time are you looking at??? Snow and Ice at High Altitude could be an issue.
David C. Gibbs
Boise, ID