As someone pointed out, I just realized you can pinch and zoom on the Android app, which is the only thing that kept me from uninstalling on my mobile devices due to font size illegibility. Don't get me wrong, I love Evernote, but I tend to use Trello on android devices since it's accessible on mobile browsers (no app install needed) and also capable of zooming. I would like to point out to other non-developers that Trello doesn't have an option to change the font size either. It is, apparently, not a simple thing to add. Any developers who feel like schooling us about why this is a tricky fix might help garner sympathy for all the other developers out there.