Sometimes I set up my tent on a camping ground that I reached by car and can't see the sun. In this case usually my real compass is stored well protected deep in the rucksack. This situation happens regularly to me if I am in southern France and arrive relatively late at the camping ground. Because I want to decide where to put the tent in the shadow of a tree for the morning in hot conditions or directly in the morning sun in cold and whet conditions, I would like to use a smart phone compass app for my decision, because I have my smartphone in the pocket and don't need a 100% sure information. If the app makes a fault it doesn't really matter. Did you try out such compass apps and can you recommend me one? Are there other usefull outdoor applications for Android smartphones you can recommend like perhaps Altimeter or something else? I am only interested in applications I don't have to pay, because I don't trust in that stuff generally, and I just want to play with it. I only invest money in classic hardware equipment off course.