Used by auto body shops across the US

Stop leaving money
on the table.

Every supplement you don't write is money the insurance company keeps. Supplement Tool writes adjuster-ready supplement letters in 60 seconds — from your phone, on the shop floor.

7-day free trial · Card required · Cancel anytime.

$500–$3,000
Average supplement value
60 sec
Time to write with Supplement Tool
~3 hrs
Time to write manually

Without Supplement Tool

Spend 2–3 hours writing one supplement
Use vague language adjusters push back on
Miss hidden damage items worth hundreds
Lose track of which claims need supplements
Get underpaid because the letter wasn't specific enough

With Supplement Tool

Write a complete supplement in 60 seconds
OEM-approved adjuster language every time
AI suggests part numbers and labor times
History panel tracks your last 5 supplements
Send directly to the adjuster from your phone

Everything a shop needs. Nothing it doesn't.

Supplement Letter Writer

Describe the damage in plain English. Get a professional, adjuster-ready letter in 60 seconds.

OEM Part Number Lookup

Type a part name, get the likely OEM part number and estimated cost. Auto-fills your parts list.

Labor Time Lookup

Mitchell / Alldata / CCC standard hours for any operation. Tap to add to your labor total.

Live Cost Estimator

See your supplement dollar value update in real time as you fill in labor hours and parts.

Save as PDF

One tap saves a clean, print-ready PDF of your supplement letter. Share or file it instantly.

Supplement History

Your last 5 supplements saved locally. Pull up any previous letter without regenerating.

Simple, honest pricing.

One supplement approval pays for a year.

Monthly Plan

$71/month

7-day free trial · Cancel anytime

Unlimited supplement letters
OEM part number lookup
Labor time lookup (Mitchell/Alldata/CCC)
Live supplement cost estimator
Save as PDF
Email directly to adjuster
Supplement history (last 5)
Works on any phone — no app needed
New features added regularly

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One supplement approval = $71/month paid for itself.

The average supplement is worth $500–$3,000. If Supplement Tool helps you get approval on just one supplement per month that you would have otherwise skipped or underbilled — it pays for itself 5x to 30x over. Most shops recover the cost in the first week.

Common questions

Ready to stop leaving money on the table?

Join shops already using Supplement Tool to recover every dollar they're owed.

7-day free trial · $71/month after · No contracts. Cancel anytime.