Caveats - it's experimental. It's read-only - you can't change notes yet, this represents an afternoon of work, not a real project. I don't really care about the ability to edit notes, 80% of my use case is just reading things I've written on the desktop.
Most importantly, because of HTML and cross-domain stuff being what it is, all requests made my this app go through proxy.php, and it proxies them to the simplenote server. This means that (a) It might be logging your password (it doesn't, but your users can't prove that), and (b) it all goes over HTTP unless you have an HTTPS certificate, so someone else can sniff your password.
DO NOT USE IT IF YOU CARE ABOUT THIS.
- poll for updates every 5 mins while the app is running
- better 'back' icon for note view
- credit icon sources