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.

Every other shop tool charges you every single month, and quits the moment your internet hiccups. There's a better way.
You already write up every job. Monkey Wrench turns that one entry into your whole back office, automatically.
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.
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.
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.
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.
Honest comparison. We're built for the small shop the big software priced out.
| Monkey Wrench | Shopmonkey | Tekmetric | Mitchell1 | |
|---|---|---|---|---|
| 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 |
The big tools cost $2,000–5,000 every year. Monkey Wrench costs less than one month of theirs, once.
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.
Yes. $79, one time. No subscription, no account, no expiry. It's yours forever, including free updates.
No. Monkey Wrench runs 100% offline on your computer. If your Wi-Fi goes down, you keep working, unlike the cloud tools.
Windows and Linux. It installs like any normal program and opens in its own window.
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.
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.
Yes, a full illustrated user guide is built right into the app, and you can print it.