Generally best to have some redundancy there. My ass has been saved more times by an iPhone compass and offline OrganicMaps than the other way round. Quote the

Generally best to have some redundancy there. My ass has been saved more times by an iPhone compass and offline OrganicMaps than the other way round. Quote the situation a couple of years back where the state issued paper maps were completely wrong and my Suunto compass turned out to likely be a fake one and froze and cracked open overnight. 30km from humans on a mountain range in central asia. I have never had an iPhone crap out on me I will add. Has completely replaced my dedicated GPS. The worst thing I've ever seen though is a compass app on Android that won't work if it can't contact the ad server.