AssistiveWare founder and CEO David Niemeijer wrote a terrific piece on Medium on how the App Store has revolutionized access for AAC devices. He writes, in part:
We saw an opportunity to democratize access to AAC. Our aim was to deliver AAC on a consumer device at a price within reach of those who did not have access to funding. In April 2009, we released Proloquo2Go, the first full-featured symbol-based AAC app on iOS. Combined with an iPod touch and a speaker case, total cost was below US$ 500.
We were a small company based in Amsterdam, Netherlands. We did not have a network of sales reps or a department to help with funding requests. The App Store provided us with access to a worldwide market. Within a year, we reached 40 countries and sold over 4,000 licenses, of which the vast majority were in the US.
This article ties in perfectly with yesterday's press release from Apple.