Auto Shop Management · Windows & Linux

Run your whole shop on the computer you already own.

Log a repair once and Monkey Wrench does the rest. It tracks the customer, deducts your parts, watches every warranty, tells you what to reorder before you run out, prints the invoice, and shows your real profit. Works 100% offline. One price. No monthly fees. Ever.

No subscription · No internet required · Your data stays on your computer
Monkey Wrench dashboard

Tired of renting your own shop software?

Every other shop tool charges you every single month, and quits the moment your internet hiccups. There's a better way.

😤 The big cloud tools

  • $79 to $427 every month, $2,000–5,000 a year, forever
  • Dies when your Wi-Fi drops. No internet, no shop
  • Your customer data lives on their servers
  • Their phone apps are limited, buggy companions (3.4★) that can't even run the shop
  • Stop paying = you lose access to everything

🔧 Monkey Wrench

  • $79 once. Yours forever. No monthly bill
  • Works 100% offline. Wi-Fi down? You keep working
  • Your data stays on your computer
  • Runs the real work (invoices, inventory, profit) right on your desk
  • It's yours. It never expires and never locks you out

One repair order does everything

You already write up every job. Monkey Wrench turns that one entry into your whole back office, automatically.

Never run out of a part

It predicts your reorders

Every job automatically subtracts the parts you used. Monkey Wrench learns how fast you go through oil, filters, pads, and tells you what to reorder and when, before you're empty.

  • Buy in 55-gal drums, use by the quart, it converts automatically
  • Spots good prices from your own buying history
Inventory and reorder prediction
Bring customers back

It never forgets a warranty or a follow-up

Monkey Wrench watches every part & labor warranty and reminds you to call the customer before it expires, a built-in reason for repeat business. It even flags the work a customer declined, so you can follow up next visit.

Warranty and service follow-ups
Know your real numbers

See your actual profit, not just sales

Revenue, parts cost, gross profit, and net after your overhead, with clear charts of how you're doing over time and which services make you the most money. Most owners have never seen this. Now it's one click.

Profit and Loss with charts
Professional & fast

Print a clean invoice in one click

Save a repair order and print a professional invoice, your shop name, the customer & vehicle (by VIN), parts & labor, total, warranty terms, and the next-service reminder. Find any past job instantly by name, phone, VIN, plate, or RO number.

New repair order screen

Monkey Wrench vs. the monthly guys

Honest comparison. We're built for the small shop the big software priced out.

 Monkey WrenchShopmonkeyTekmetricMitchell1
Price$79 once$199+/mo$189+/mo$309+/mo
Works offline✓ Yes✗✗Needs broadband
Reorder prediction✓ Yes---
Warranty follow-up✓ Yes---
Prints invoices✓ Yes✓✓✓
Data stays on your PC✓ Yes✗✗✓
Own it forever✓ Yes✗ rent✗ rent✗ rent

One price. Yours forever.

The big tools cost $2,000–5,000 every year. Monkey Wrench costs less than one month of theirs, once.

Compare to $189–427 / month
$79 once
  • Full shop management, invoices, inventory, customers
  • Reorder prediction & warranty follow-ups
  • Profit & Loss with charts
  • Works 100% offline · Windows & Linux
  • Free updates · Built-in user guide
  • No subscription, no account, no expiry
Get Monkey Wrench now
Instant download after purchase · Secure checkout

Straight talk, is it right for you?

Monkey Wrench is for the shop that runs on its own computer: a small, solo, or mobile shop that's tired of monthly fees and flaky internet. It runs on the Windows or Linux PC at your counter and keeps your data private and offline.

It's not a multi-location cloud system, and it doesn't sync live to a phone in the bay or your house. If you need a mechanic snapping inspection photos on a phone or checking in from vacation, the big cloud tools do that (for $200/month). We do the real shop work better, cheaper, and offline. We'd rather tell you the truth than sell you the wrong thing.

Service reminders are estimates based on time and average driving. The Profit & Loss view is a snapshot to understand your shop, not a replacement for your accountant or tax software.

Questions

Do I really only pay once?

Yes. $79, one time. No subscription, no account, no expiry. It's yours forever, including free updates.

Does it need the internet?

No. Monkey Wrench runs 100% offline on your computer. If your Wi-Fi goes down, you keep working, unlike the cloud tools.

What computers does it run on?

Windows and Linux. It installs like any normal program and opens in its own window.

Where is my data stored?

On your own computer, never on someone else's server. We show you how to back it up safely (to a USB drive or a cloud folder you already use), and it repairs itself from your backup if the file is ever damaged.

Can I use my own parts, prices, and warranties?

Absolutely. Monkey Wrench comes pre-loaded with sensible auto-shop defaults, and you can change every product, price, reorder point, and warranty period to match your shop.

Is there a manual?

Yes, a full illustrated user guide is built right into the app, and you can print it.