App ideas - free of charge

In theory, is it possible to convert messages as images at the watch level?

Well, effectively that is what the Bangle is already doing, it just doesn't have characters in the font for everything.

In the iOS Integration app there is actually a lookup table of common characters that aren't in the font, and what to convert them to. So more characters can be put in there, and the conversion itself can be a bitmap (just prefix it with char code 0).

But if you're asking whether we can put the whole of unicode into the Bangle, probably not. There are 150,000 characters so that's just too much storage needed.

If we had a list of characters that were commonly used, we could maybe add the top 200 or so and create a script to store images for just those in the Bangle though.