Users' progress chart for targets
 

What I'd like is for users to be able to set various targets, and be able to update their own progress chart. (similar to an excel graph or piechart but online)

Is this already possible with a mod?

e.g. People might have a slimming target and the chart might show their goal for losing x pounds in y weeks/months. Or it could relate to exercising: working towards x situps per minute.

Of course they can keep this kind of chart at home, but the idea of doing it on a public or private community forum is that they could get encouragement form the other members.

Does anyone know if this exists as a mod, or if it's possible to customise vBulletin to be able to do something like this?

TIA.