Scoring Methodology
The Product Integrity Index is a composite score (0–100) measuring how well a product maintains its quality, features, and value over time. Every metric is evidence-backed.
Durability
25%Build quality, material longevity, failure rates over time.
Repairability
20%Ease of repair, parts availability, official repair support.
Material Quality
15%Material composition changes, downgrades, or improvements.
Version Stability
15%Frequency and nature of product revisions and changes.
Anti-Shrinkflation
10%Size, quantity, or capacity reductions relative to price.
Firmware & Lock-in
10%Software restrictions, feature removals, ecosystem lock-in.
Ownership Integrity
5%Warranty terms, right-to-repair stance, ownership transfer.
Principles
- All claims must be linked to verifiable evidence.
- Scores use factual language only — never intent or speculation.
- Methodology versions are tracked. Historical scores reference their methodology.
- Scoring is independent of any commercial relationship.