I built a mechanic-quote lie detector that runs entirely on your laptop

Description and use

wrenchwise lets car owners verify repair estimates against fair-price data, flagging inflated items and explaining results with an on‑device Gemma 2B model.

Problem

Car owners cannot verify if repair estimates are fair, leading to overpayment and lack of transparency.

Outcome

The app instantly flags overpriced items, verifies totals, and explains findings on‑device, eliminating server costs and protecting user data.

Workflow

• Paste the estimate text into the web app
• Select the region (India or US)
• Click Analyze
• Review the verdict stamp and overpay gauge
• Inspect the line‑by‑line breakdown with fair‑range bars
• Check the cross‑check of the total
• Click to load Gemma 2B for a plain‑English explanation

Evidence

wrenchwise is my answer to that moment: paste any repair estimate, and it checks every line against fair-price data, flags the inflated ones, and explains the whole thing in plain English — with AI that runs 100% on your device.

Source

The price data ships as PRICE_PACKS: 22 common jobs for India (₹), 14 for the US ($, marked beta).

Source

No signup, no server, no API key. Open it in Chrome or Edge; the line-by-line analysis works instantly, and the AI explainer needs one click to download the model weights (~1.5 GB, cached after).

Source