Absolutely! GPS can fail, or if you take a bad fall it can break. Same with a compass, but I have my compass in a padded pouch as well as a map in a waterproof map holder. I set the declination offset on my compass prior to going on the hike, and I have a map scaled for my compass. Of course, I can navigate without a compass using an analog watch or even a shadow, but I like to keep it simple. Also check out: Can you use the phone GPS to navigate without internet or cell service.