ToleranceCalc Vs spreadsheets based tolerance analysis.

Capability Spreadsheet Based Analysis ToleranceCalc
Nominal Values Accuracy Manual Entry Comes Directly from CAD geometry
Types of Analysis Worst-Case or RSS Worst-Case plus Monte Carlo Statistical Analysis
Analysis Mathematics Varies from user to user Consistent - all users use same mathematics
Sensitivity Analysis Manual Automatic
Visualize Stackup Chain No Yes
Kinematic Analysis No Yes
Reverse Analysis No Yes

CAD Tolerance Analysis Made Easy As Spell Checking!