Next up in my parade of filter apps is @tinrocket 's Percolator, which has me a bit mystified. It turns photos into circles, which seems promising, but finding photos that work has been a bit frustrating. I would've thought large blocks of colour work best but that's not always the case. There is one "grind" (@tinrocket is great with their themes) that is interesting and unusual. I'll post one of those later. For now, here's the colourful Nyhavn in Copenhagen, in all its bubbly glory.
