FlyCalm is a free iOS app for people with fear of flying. It guides you through breathing exercises timed to the actual phases of your flight: takeoff, turbulence, and landing, instead of generic meditation. Something concrete to focus on during the exact moments anxiety spikes, instead of just white-knuckling it. Built because I couldn't find an app that combined breathing techniques with the real phases of a flight, so I made one myself. No account needed, works offline.
I've always struggled with promoting my own work. It always felt a little awkward because I grew up in an environment where drawing attention to yourself wasn't really encouraged.
That's not exactly ideal when you're trying to build a business, and even less so when marketing is literally how you make a living. :D