iPhone/Web App for tracking strength training?

I've been using Jefit (http://www.jefit.com/) for tracking my strength training routines, but there's no integration with other services.

While it's not a huge deal for me to manually enter calorie burn estimates, I figured I'd see if anyone out there had suggestions for alternatives.

I'm really looking for something that works on my iPhone and the web, lets me create & track custom exercises & custom routines, and includes timer functionality as part of exercise data entry.

Any suggestions?