There’s a simple rule of thumb which states that the choice of font size should lead to no more than about 12 words per line. Another establishes a relation between line length and the space needed between lines; the longer the line, the more space is needed to help the eye reconnect from the end of one line, to the beginning of the next. Others help determine the amount of margin to be found around a piece of text.
In the field of typography, there are concepts subtler and far more sophisticated than these, but consistent with Pareto’s principle, the majority of readability benefits can be achieved in the application of just a few basic rules; rules which anyone who communicates with the written word, or provides the tools with which written communications are authored, can easily learn in an afternoon.
When writing tools don’t respect the fundamentals of typography, the consequences don’t manifest themselves in something as acute as a bug or application crash. No, the consequences are subtler yet more profound — the writer, for reasons they can’t quite put their finger on, find themselves unable to effectively put their thoughts into words.
This has been my principal frustration with the majority of writing tools available on the iPad. Text running from the very left edge of the screen to the far right, illegible fonts, lines that are too long and with too little linespacing collectively work to derail my concentration; subconsciously repelling me from the application.
So I’ve been eagerly awaiting the release of Writer, the authoring tool for iPad, by the folks at Information Architects. iA know their typography, and their new iPad app doesn’t disappoint.

They’ve paid attention to detail and have introduced some useful twists — for example, they’ve extended the standard iPad keyboard with an additional row containing word and character navigation, as well as quick access to punctuation.

But the real value for me is delivered in the superb execution of the basics. After just a day of usage, I’ve already observed that I can spend hours in the app, frictionlessly emerged in thought, as the tool disappears from my consciousness, allowing me to finally achieve the single-tasking focus inherent to the device. In fact, I now find myself actually preferring to move away from the desktop, and write on the iPad.
And as we at Makalu conclude design and development of our own first iOS products, I have a particular appreciation for the skill and effort required to achieve the simplicity, elegance and effectiveness of such a polished product. So bravo to Information Architects — one of our respected peers in the digital product design industry — on this accomplishment.