I won't pay $20 without trying it first, otherwise it's like throwing money out of the window… Is there any plan for a downloadable trial version?
or they could offer a 24 hour or 7-day full refund?
Unfortunately we cannot offer something like this through the App Store. However, you can request a refund via Apple for a purchase in the App Store. It's a bit of a hassle though...
No. But you couldput a demo/crippled version on your Web site for people to evaluate.
We're definitely thinking about it.
Is it based on html5? if yes, what container did you use?
No, it's not, it's all native Cocoa text rendering. We deeply cared about the design and wanted full control, and being able to lay out glyhps individually is very important...