I’ve already commented on how much I like Writer Pro.

In case you’re wondering what were the design decisions behind this writing app for iOS and Mac, look no further than this blog post written from the designer himself. 

Oliver Reichenstein talks about the workflow, how he came up with the choice of fonts and colours and the philosophy behind the workflow mechanism:

Inspired by Hans Blumenberg’s mind-bending book “Sources, Streams, Icebergs” (Quellen, Ströme, Eisberge), we referred to the writing process through the metaphor of a river while designing Writer Pro. A river grows when multiple sources (Note) join into a stream (Write), which spreads into a delta (Edit), before flowing into the ocean (Read).