Built for trade businesses.
Started for one.
Wrench Grid didn’t start as a SaaS pitch. It started as a question I couldn’t answer for my brother — a plumber in New York whose business was bleeding money in places neither of us could see.
It Started With A Phone Call
My brother Patrick runs a plumbing business in New York that specialized in Sewer & Drain services. For years, the business was making money. Then it wasn’t.
Nothing dramatic had changed. He still had customers. He still had the same skill, the same trucks, the same crew. But somewhere between the phone ringing and the invoice getting paid, money was disappearing — and he couldn’t tell me where.
So I started listening. Really listening. Not to pitch him software, but to understand the operation. Where was the day going? Which jobs got followed up on and which ones cooled off? How were estimates being tracked? What happened when a customer called and nobody could pick up? What did the end of every job look like — was there an upsell, a recommendation, a rebooking, or just a goodbye?
The pattern wasn’t subtle once I saw it. And it wasn’t unique to him — it was the same pattern showing up in dozens of small trade businesses I’d later study. The money wasn’t being stolen. It was being left on the table — quietly, every single day.
Quoted work going cold after the first visit. Tickets coming in $40 lower than they should because there was no add-on script. One wasted dispatch slot per day quietly erasing the week’s margin. Three leaks. Hundreds of dollars a day. None of them visible from inside the truck.
My first instinct was to build software. I started designing a dispatch automation tool with maintenance reminders baked in — the kind of thing my brother could plug into his day and stop the slow bleed. Then I started talking to other plumbers. Other HVAC operators. Roofers. Garage door guys.
Every one of them said some version of the same thing: “I already pay for software I don’t use.” ServiceTitan, Housecall Pro, Jobber — half had it and weren’t getting the value, half didn’t have it and weren’t convinced another tool would change anything. Selling them another platform was a losing game before I started.
So I changed the order of the conversation.
If I couldn’t sell software, I could at least show them where the money was going. Not a generic checklist. Not a “10 ways to grow your business” PDF. A real diagnostic — built from their numbers, their team size, their trade — that put a dollar figure on the leak before anyone said the word “subscription.”
That became the wedge. The free AI report became the front door. If a contractor sees they’re losing $44,000 a year to weak follow-up, the next conversation isn’t a sales pitch — it’s a recovery plan. Software comes later, only if it’s the right tool for the leak.
Sell the fix second.
Most contractors don’t have a lead problem first. They have a recovery problem.
Follow-up leaks
Open estimates cool off because nobody owns the second touch, third touch, or “still interested?” message.
Dispatch leaks
One wasted slot, slow assignment, or no-show gap can erase margin that looked healthy on paper.
Closeout leaks
Techs finish the job, collect payment, and leave without offering obvious add-ons, maintenance, reviews, or rebooking.
Three Decisions Behind The Product
If This Sounds Familiar, WrenchGrid Was Built For You
You’re busy, but margin feels thin.
Calls coming in. Jobs going out. Invoices getting paid. But the month still feels tighter than the workload suggests it should.
Your estimates aren’t being chased.
You know quoted work is sitting somewhere in a notebook or inbox, but nobody has a clean daily recovery rhythm.
Your team finishes jobs without closing the loop.
Customers get great service — but add-ons, reviews, memberships, rebooking, and maintenance reminders are inconsistent at best.
You don’t want another tool until the leak is clear.
You want a specific diagnosis first. Then the simplest path to recover the money. Software is a last step, not a first one.
Run The Diagnostic. Find The First Leak.
It takes about 90 seconds. You’ll see your #1 revenue leak without adding software, connecting accounts, or entering a credit card.
Best fit: plumbing, HVAC, roofing, garage door, electrical, and home service companies with 1–10 trucks.