Good work on tech, please hire a UX specialist :-)
I did all of the graphics design myself, in the app and on the web. :-)
The infinite sign you see does require an explanation. I'll take your advice and think about how it can be done more simply.
It's basically telling you, the user, that the capture buffer has filled, and you're now dropping (some) shots.
Just some thoughts. If you have a buffer, and I'm gonna get fubarr'd if I hit the limit, you should probably show me the buffer (not just a warning that it's too late).
I generally can see the "end" of the circular buffer around the shutter button, so it doesn't seem to be an issue for me. Perhaps I tend to touch it on the lower-right instead of dead-center.
I made an effort to support lefties in the UI (see Advanced Settings), but the buffer doesn't spin the other way just yet. (To be honest, I've had to deprioritise that in favour of other features.)
Are you left handed?
[1] Yes, that's me jumping near the GG bridge. I'm quite good at it now, as you can imagine: http://a3.mzstatic.com/us/r1000/085/Purple/v4/c5/06/d5/c506d...
The red bar on the bottom woul probably be fine of you could make it like 70% transparent until it gets toward the end, the vacillate it between 0% and 50% so it looks like its flashing. Some visual indicator that I should be paying more attention to it.