I’ve been using this since about version 0.93 and the developer has done a great job with each new update. I’m thrilled to see it on the App Store and with good publicity.
I started using because I wanted an authentic terminal experience for hacking around—the slight fuzziness of edges, the phosphor glow when the contrast is turned up too high, the ability to simulate a 1200bps connection—I find it much more captivating than perfect crisp black on white 9-point monaco.
That said, it still has bugs—the game of Life in emacs, for example, totally screws up the screen buffer, and it lacks several functions; shift-home/end to go to the start/end of the command line, and key repeat, to name a couple (and it drives me crazy every time I try to use them in vain). Overall though it’s a great throwback, and conversation starter (really!) and it’s $10 I’ve had no regrets in spending.