Four Winds is an Android app that generates abstract compositions that constantly evolve over time. The "painting" starts with a composition of coloured squares, but as the painting progresses these colours are shifted around by different textural painting methods. The original colour composition is chosen by an algorithm that selects from a range of different harmonious colour relationships, based on colour theory. The app has an internal clock that moves forward over time so that different colour ranges are subjected to different painting methods as time progresses. This causes the painting to evolve, with different colours and textures becoming more predominant, then later fading away.
The app is available, free, on the Google Play Store: