Just an update for you, dear iOS + Chrome + T-Countdown user:
After a bit of research, it seems this is very much an issue with the way the fine folks from Cupertino deal with non-safari browsers:
Non-safari browsers do not...
Fear not! We are starting extensive testing to see if this is, in fact, an issue with Chrome and UIWebView (so also FireFox, Opera, etc) or just with Chrome.
Stay tuned... more to come (including a fix)