Very Simple but effective when explained
So many negative reviews, ouch... Here’s my take: this is free, and it works. The gray “shadow” moves around the dial VERY slowly throughout the day, so don’t expect this app to ‘do’ something active, it doesn’t. As explained, orient your finger’s sun shadow over the gray shadow on the screen, and you will see roughly accurate cardinal headings (N,S,E,W) but not exact degrees. In a pinch, this will get you un-lost if needed. Works great on my iWatch gen 4 too. No need for cell or WiFi connection. Thanks, app maker!!