Mobile Marine Mechanic Invoicing App (2026)
For a solo mobile marine mechanic, ShowTheReceipts ($15/mo) covers the whole dockside job — quote parts, labor, and travel, invoice the moment the engine runs, and take a card at the slip or on file. Cash and card land in one ledger, so the season's books are tax-ready without a shop system behind you.
How we picked
Entry-plan prices as published in 2026, checked against each vendor's own pricing page or a recent third-party summary. Tools were judged against the solo mobile mechanic's real workflow — parts and labor quoting, dockside invoicing, and on-site payment — not against marina or multi-bay shop management.
| Software | Starting price | Best for |
|---|---|---|
| ShowTheReceipts That's us | $15/mo | Solo mobile marine techs: parts/labor/travel quoting, dockside invoicing, card on site, tax-ready books |
| ARI | $19.99/mo+ | Mobile mechanics wanting repair-order style invoices |
| Torque360 | $99.99/mo+ | Marine shops running work orders across several techs |
| Shopmonkey | $179/mo+ | Boat shops with bays, parts inventory, and staff |
| DockMaster | Quote-based | Marinas managing slips, storage, and service departments |
The dockside job is not a shop job
You diagnose at the slip, quote parts and labor from the phone, and finish the same visit. There’s no service writer, no bay board, and no counter to collect at.
Software that assumes a shop makes you work around it. What you need is a quote, an invoice, and a card reader in the same app.
1. ShowTheReceipts — $15/mo
Itemize parts, labor, and the dock call, convert the quote to an invoice when the engine runs, and charge on the spot. Cash and card land in one ledger so the season reconciles itself.
2. ARI — $19.99/mo+
Repair-order style invoicing aimed at mobile auto techs; workable for marine, lighter on payment and books.
3. Torque360 — $99.99/mo+
Work orders and inspections built for a shop with several techs — real capability, priced for a payroll you don’t have yet.
4. Shopmonkey — $179/mo+
Bays, parts inventory, and staff management. Built for a boat shop, not a truck.
5. DockMaster — quote-based
Marina-scale: slips, storage, and a service department. Wrong shape entirely for one tech with a toolbox.
Picking on one question
Do you have a building? If not, the shop platforms are overhead you’ll never use, and the job is quote → invoice → paid before you untie.
Frequently asked questions
What does a solo mobile marine mechanic actually need from software?
Parts and labor itemized on a quote, a travel or dock-call fee, invoicing from the phone at the boat, and a way to take payment before you drive off. Bay scheduling and parts inventory only start paying for themselves once you have a shop and staff.
Can I bill a dock call or travel fee separately?
Yes. Save a dock-call line in your catalog and add it to every job, so the customer sees travel priced separately from the wrench time instead of buried in a labor number.
How do I handle a job that needs a part ordered mid-repair?
Quote the diagnostic and labor first, then add the part as a line item when it lands and re-send the invoice. The customer sees exactly what changed and why the total moved.
What do I get with ShowTheReceipts for $15/month?
Quoting, invoicing, on-site card payment, cash and card in one ledger, and tax-ready exports. Recurring invoicing and automated reminders are Pro-plan features at $39/month.