iA, who make the wonderful iA Writer, have a long post about app pricing and what they’ve learned from Android subscriptions. It’s worth reading in full, but I especially loved this friendly shade thrown Craig Mod’s way, re. his subscription newsletter:

You can try selling your newsletter, but it needs to be a hell of a newsletter. You need to do diabolically unique things, something like walk up and down Japan, and live stream multimedia poetry wrapped in digital washi paper.

Full disclosure: I paid for iA Writer, and I pay for Craig Mod’s newsletter…