Stuff like this is why I try to avoid apps that operate their own syncing services. If Vesper had used some kind of file format you could just keep in your Dropbox, and used that for syncing, all the developers would need to do is stop paying for the proprietary font in order to have zero operating costs.

Obviously you can't avoid all problems this way (Apple and Google and Dropbox sometimes change their APIs, or discontinue them, e.g. Google Reader), but it goes a long way to building confidence that even if the company fails, people can continue to use the app.