I haven't used it a whole lot, but the
GAIN Fitness app mentioned on Fitocracy a while back seems pretty good. It certainly has had me doing things I normally wouldn't have done (which in turn brought levels of pain I hadn't had in while) so it may be worth a look. The standard workout pack is free too so it can't hurt to try.
The only thing I know of similar to what you mention is Technogym workout trackers, but those are specific to Technogym machines. GAIN will at least tell you what exercises to do, but the weight to use is something you'll still have to figure out.