I had this app, if you are looking for the one that has the glass background, put on phone and didn't like so deleted. I found this through extensive search on xda developers forums under Epic, so search and you will find.
It didn't fit on Epic, kept showing "too large for page", so I'm not sure what the problem was but didn't format into widget size for me.
If you are looking for the clock only, MIUI Clock in the market (free) is very similar and does work.