Runestone is the latest app from Simon Støvring, the developer
behind Scriptable, Jayson, and Data Jar. Støvring’s
apps tend to be focused on developer or automation use cases,
filling holes in the iOS and iPadOS ecosystem to aid power users.
Runestone mostly falls into the same category, although it also
has some wider potential appeal for general purpose writing.
The new app functions as an excellent plain text editor for anyone
who needs to write on their iPhone or iPad. It’s simple and
thoughtfully designed, and includes a variety of excellent themes
to improve your writing experience. Runestone’s marquee feature,
however, is its syntax highlighting. For Markdown writers, the app
will use simple color schemes (which can be altered to your liking
using the theme settings) and subtle style changes to highlight
your links, bold and italic words, footnotes, and more. The result
is a very simple, essentially plain-text approach which still
makes it easy to see your markup at a glance.
Runestone is free to download and use. For a one-time $10 purchase, “Premium” unlocks a bunch of customization options and one of the best Easter eggs I’ve seen in years.