The Inventor Tolerance calculator is too basic. It is no good for serious engineered products. It is just a waste of desktop space.
We need GD&T Tolerance Analysis in the model. This needs to be in part and assembly files.
WHY do we need it.
Going to production all the information is there in the model no need to redo all the manual calculations for the drawings.
Save time doing GD&T Tolerance Analysis in the model. See what happens to the whole model when tolerances change.
Save huge costs in production as tolerance stack ups are set for the production process.
Control of drawings comes from the model.
Drawings are updated as the model changes.
Saves time as Tolerance Analysis does not have to be done in other software or programs.
See to get an idea of what I am talking about
https://www.youtube.com/watch?v=inlSdTVnkUk
http://www.advanceddimensionalmanagement.com/tolerance-analysis-and-tolerance-stackups/
If you do not understand just VOTE. Once Autodesk implements this , you will love working with it.