Run your mobile mechanic business from first call to repeat customer

The job's done. Getting paid for it is the hard part

It's 5:40 on a Thursday in an office-park lot. You've just finished front pads and rotors on a customer's SUV. When you called with the price at lunch, they said "sure, go ahead." Now they're standing by the car saying they thought it was the pads only.

Then you drive home, eat, and open the laptop to write up four invoices from memory. The miles you put on the van today go in the notebook if you remember, and most nights you don't.

That's where a mobile repair business leaks money: at the curb and after dark. FSM Navigator is a field service management app, one app from first call to repeat customer. It handles the work around the wrench: the request, the quote, the signature, the invoice, the payment and the drive.

Quotes the customer signs before you pick up a wrench

Good, better and best, on the customer's phone

On Pro, quotes are built from your pricebook with good, better and best options. Pads only, pads and rotors, or pads, rotors and a fluid flush. The customer picks one and signs it from their phone. If you take a deposit, it goes out as its own invoice they pay online in your customer portal. Deposits are available once online payments are set up, and they're off while Stripe Tax collects your sales tax.

You turn the signed quote into a job in one step, and the final invoice bills the option they picked at the signed price, minus the deposit, so "I thought it was the pads only" has an answer with their signature on it.

The deposit matters more for you than for most trades, because you often buy the parts before you drive out. Here's how much deposit to ask for.

Sign up free, then start a 14-day Pro or Enterprise trial from your account. A payment method is collected when the trial starts and isn't charged until the trial ends.

Photos of what you found

On Pro, attach photos to the job, up to 10 per job: the scored rotor, the leaking hose, the cracked belt. When the customer asks why the price went up, you show them. Technicians can also collect the customer's signature on a job form when the work is done. More on photo documentation in the field.

Every mile to every job, logged

You drive more than almost anyone in the trades, and every one of those miles is a business record. On Pro, mileage tracking logs the drive automatically when you mark a job en route, once each person has consented in the app, with year-end records and a CSV export. No paper log, no second app. It works offline, and mileage cost feeds job profitability, so on Pro you see the margin on every completed job with the drive counted.

For reference, the IRS business standard mileage rate is 76 cents a mile for miles driven on or after July 1, 2026. It was 72.5 cents a mile from January 1, 2026. How you use your log at tax time is a question for your tax preparer. If you're working out what to bill for the drive itself, read how to charge for travel time.

Bookings and repeat customers

A mobile mechanic scheduling app with booking you approve

On Pro, customers pick a service and an arrival window on your online booking page and send a request. Every request waits for your approval before it goes on the schedule. That matters when you're one person: you decide whether a no-start across town fits between two brake jobs.

Every plan includes a schedule board and calendar where you assign work by hand, with status updates from the field.

The customer who calls you again

Customer records are on every plan, Free included: every customer and service location in one place, with their jobs and invoices. When a customer from last spring calls about a noise, you can pull up what you did and what you charged.

After a job, customers are asked for a rating on every plan. On Pro, everyone who rates sees your Google review link, and low ratings also reach you privately, so you hear about the problem before the next customer does.