Have you tried something like f.lux ? it can remove the black spectrum of colors from computer/tablet displays ,and they claims there's research that this is the spectrum most critical for messing up with sleep.
With regards to eink web-apps, don't forget you'll also have to fight the keyboard if you'll even get one. So it's hard to design to that medium. On that note, there's the onyx eink phones/tablets that have a version of the play store, but their only unique apps are rss reader and google calender. But maybe sniffing around onyx and their users will let you discover usable apps.
With regards to eink web-apps, don't forget you'll also have to fight the keyboard if you'll even get one. So it's hard to design to that medium. On that note, there's the onyx eink phones/tablets that have a version of the play store, but their only unique apps are rss reader and google calender. But maybe sniffing around onyx and their users will let you discover usable apps.