Each bug is rated on three independent factors: Type (what kind of bug?), Likelihood (who is affected?) and Priority (how bad does it feel?). The User Pain score is:
User Pain = (Type × Likelihood × Priority) ÷ MaxPossibleScore × 100
The Quality Bar threshold lets you draw a line on the pain list.
Bugs above the line need to be fixed; bugs below can ship.
Data is stored in your browser's localStorage and can be exported / imported as JSON.
To customise factors, thresholds and labels edit config.js.