Here’s “Candle” another one of those free apps where it’s just difficult to see any practical use for it. Maybe waving it at a gig? Impromptu candle for a romantic dinner?
It’s a realistic candle that you can put out by swiping, and lighting up by double swiping. It works in portrait and landscape though it would have been preferable if it just worked in portrait (so you’d have a longer candle) and used the accelerometer to change the position and flickering of the flame.