Itemize diagnostics, labor, parts, and service notes at the job. Send a PDF estimate before the work, convert to an invoice on completion. Free tier plus a lifetime option ($249.99) available.
Last updated · July 13, 2026
Invoice
Billgami is an auto repair estimate and invoice app for mobile mechanics. It itemizes diagnostics, labor, parts, and service notes; sends PDF estimates from the job site; and converts approved estimates into invoices in the app. Billgami never processes card payments or holds funds. Customers pay you directly. Billgami is free to start with a lifetime tier ($249.99) available if you want to skip subscriptions entirely. It is not a shop management system.
50-word summary
For solo mobile mechanics: itemize diagnostics + labor + parts, send PDF estimates from the truck, convert to invoices in the app, track paid manually. Works offline. No payment processing. Free tier plus lifetime option ($249.99).
A filled-in example that mirrors what you would send a client. Every price is pulled from the industry data table below.
Invoice
Sample mobile mechanic invoice after the same repair
Invoice #
SAMPLE-0001
On-scope on parts. Actual labor came in at 2.5 hours because a caliper bolt was seized and needed extra work.
| Description | Qty | Rate | Total |
|---|---|---|---|
Diagnostic | 1 | $65.00 | $65.00 |
Labor Front brake pad + rotor replacement + seized caliper bolt removal, 2.5 hours actual | 2.5 | $95.00 | $237.50 |
Parts: brake pads (set) | 1 | $85.00 | $85.00 |
Parts: brake rotors (pair) | 1 | $140.00 | $140.00 |
Invoice
Sample mobile mechanic estimate from Billgami
Invoice #
SAMPLE-0001
A minimal brake job estimate. Diagnostics + labor + parts.
| Description | Qty | Rate | Total |
|---|---|---|---|
Diagnostic Brake system inspection and diagnosis | 1 | $65.00 | $65.00 |
Labor Front brake pad + rotor replacement, estimated 2 hours | 2 | $95.00 | $190.00 |
Parts: brake pads (set) OEM equivalent, front axle | 1 | $85.00 | $85.00 |
Parts: brake rotors (pair) OEM equivalent, front axle | 1 | $140.00 | $140.00 |
Who this is for
Solo mobile mechanics and small 1-2 person mobile operations doing repair work at customer locations.
Who this is not for
Auto repair spans from mobile solo work to full-service shops. Billgami sits at the mobile end.
For shop-management software with parts inventory and tech scheduling, Shopmonkey or Mitchell1. For accounting, QuickBooks. Billgami is for solo mobile mechanic paperwork.
Save the customer and vehicle, itemize diagnostics + labor + parts, send the PDF estimate, do the work, convert to an invoice, mark paid when payment lands.
Add the customer with contact info, and keep vehicle details (year, make, model, VIN) in the customer notes so they are on hand for the next visit.
Add diagnostic fee, labor at your rate, parts with quantities and cost, and any service notes (recommendations, follow-up work). Save common services in your library for quick reuse.
Preview the estimate, share the PDF through email or text before you start the work. Works offline. Customer sees itemized cost and can approve on-site.
When the repair wraps, convert the estimate into the invoice in the app. Adjust actual labor hours or add any parts you had to swap in. Send the invoice PDF the same way.
Customer pays through cash, Zelle, Venmo, check, or a card reader you already have. Billgami never processes payment. You mark the invoice paid when it lands.
Every invoice PDF stays saved on your device and shareable. Warranty question on a previous repair? The saved invoice is the record.
| Feature | Billgami | Shopmonkey | Mitchell1 | QuickBooks |
|---|---|---|---|---|
| Made for solo mobile mechanics | Yes | Fixed shops | Fixed shops | Full accounting |
| PDF estimate + invoice from iPhone | Yes | Yes | Yes | Yes |
| Estimate to invoice conversion | Yes | Yes (workflow) | Yes (workflow) | Multi-step |
| Itemized diagnostics + labor + parts | Yes | Yes | Yes | Yes |
| Works offline at customer location | Yes | Partial | Partial | No |
| No shop-management overhead (parts inventory, tech scheduling) | Yes | No, shop-central | No, shop-central | Yes |
| No payment holds | Yes | Payment processing | Payment processing | QB Payments |
| No accounting bloat | Yes | Growing suite | Growing suite | No, full accounting |
| Lifetime option available ($249.99, no renewal) | Yes | No | No | No |
Comparison based on public product pages and App Store metadata as of July 2026.
Six things Billgami ships for mobile mechanic workflows. Honest scope: this is not shop management software. It is the estimate and invoice paperwork layer for mobile repair work.
Save customers and vehicles for reuse
Save repeat customers once and reuse the record on every estimate and invoice. Keep vehicle details in the customer notes so you are not retyping them at the next job.
Save diagnostics, labor, and common repair services
Build your service library: diagnostic fee, labor per hour, common repairs (brake pad replacement, oil change, battery swap, alternator replacement). Drop into any estimate from your saved list.
Send professional PDF estimates from the truck
Estimate at the customer location, share the PDF before you start work. Customer sees itemized cost and can approve on-site. Works offline; PDF generation does not need cellular.
Convert an approved estimate to an invoice in the app
When the repair wraps, convert the estimate into the invoice in the app. Adjust actual labor hours or add parts you swapped during the job. Consistent line items from estimate through invoice.
Track paid, unpaid, and partial manually
Mobile mechanics get paid on-site in cash, through card readers, or via Zelle/Venmo. Some jobs are deposit + balance. Billgami tracks status manually so your records reflect what actually happened.
Works offline at the customer location
Customer driveways, parking lots, and repair sites with poor cellular coverage. Billgami creates estimates and invoices offline. Share the PDF once you are back in signal.
The US auto repair industry has a growing mobile-mechanic segment. Public data from BLS and RepairPal gives useful ranges.
| Metric | Value | Source |
|---|---|---|
| US automotive service technicians and mechanics | ~700K individuals across all shop types, 2024 | BLS Occupational Employment and Wage Statistics 2024 |
| US automotive repair nonemployer businesses (solo operators) | ~250K businesses (NAICS 8111), 2022 filings | IRS Nonemployer Statistics 2024 |
| Typical shop labor rate (US national average) | $100-$150 per hour for independent shops; $130-$210 per hour for dealerships, 2024 | RepairPal 2024-2025 |
| Typical mobile mechanic labor rate | Often $75-$120 per hour, lower than fixed shops due to reduced overhead | RepairPal + industry aggregated data 2024 |
| US mobile mechanic services market size | Growing segment; estimates in the low billions annually and rising, 2024 | IBISWorld / Statista 2024 |
Billgami's mobile mechanic positioning is grounded in three sources. First, BLS data on Automotive Service Technicians (~700K individuals, 2024) and IRS Nonemployer Statistics for auto repair (~250K solo operators). Second, RepairPal average labor rate data showing typical rates of $75-120/hour for mobile mechanics. Third, App Store review analysis of Shopmonkey, Mitchell1, and mobile-mechanic-specific tools, plus Reddit r/MechanicAdvice and r/AskAMechanic discussions on invoice tools. The consistent pattern from solo mobile mechanics: shop management software is expensive overhead for van-based work; a fast on-site PDF estimate and invoice tool is what actually helps. Billgami's six features map directly to that need.
Solo mobile mechanics already carry tool costs, van maintenance, fuel, and insurance. Billgami is one App Store purchase. Own the app, keep your customer and repair records, never pay again for the paperwork layer.
Pricing
Free tier + Lifetime option ($249.99)
Lifetime access ($249.99): buy once, own it forever. Estimates, invoices, PDF export, offline creation, and manual status tracking, with no renewal.
See full pricingBillgami vs Shopmonkey
Shopmonkey is a full shop-management platform for fixed-location auto shops: parts inventory, tech clock-in, work orders, customer records, payments, and reporting. Excellent for shops with bays and multiple techs. For a solo mobile mechanic in a van, most of Shopmonkey's surface area (parts inventory, tech scheduling) is unused overhead paid for monthly.
Billgami vs Mitchell1
Mitchell1 is a shop-management and service-information platform used by many independent auto shops. Strong for repair information database access alongside shop management. Similar profile to Shopmonkey for solo mobile work: too much software for what is fundamentally mobile repair paperwork.
Billgami vs QuickBooks
QuickBooks handles bookkeeping and tax. Auto repair businesses with employees or complex tax needs use it. Not designed for fast mobile estimate creation at a customer driveway. Billgami handles on-site paperwork; QuickBooks (if needed) handles accounting behind it.
Itemize diagnostics, labor, and parts at the job. Send PDF estimates from the truck. Convert to invoices in the app. Get paid the way you already work. Free tier plus a lifetime option ($249.99) if you want to skip renewals.
Last updated: July 13, 2026 | Written by Phuc Doan
FAQ
For solo mobile mechanics who work out of a van and want fast PDF estimates without shop-management overhead, Billgami covers the essentials. For fixed shops with multiple bays and parts inventory needs, Shopmonkey or Mitchell1 fit better. Choice depends on whether you need the paperwork layer or the shop-management layer.
Save each as its own service line item: 'Diagnostic fee', 'Labor per hour', and individual parts. Build the estimate by tapping each line and setting quantities. Some mechanics bundle diagnostic into labor; Billgami lets you itemize or bundle either way.
Customer name and contact, vehicle details (year, make, model), service date, itemized diagnostics + labor + parts, subtotal, total, and payment instructions. Billgami builds this structure by default; you fill in the numbers.
Yes. That is the primary Billgami workflow. Preview the invoice, share the PDF through email or text before you drive to the next stop. Works offline; PDF generation does not need cellular.
No. Billgami never processes card payments. Customers pay you through cash, Zelle, Venmo, check, or a card reader you already have. You mark the invoice paid when the payment lands.
Yes. Save the customer once and reuse the record on every job. Keep vehicle details in the customer notes, and keep each invoice PDF as the job record. Warranty question on a past repair? The saved invoice is the record.
Shopmonkey is designed for fixed-location shops with parts inventory, tech scheduling, and integrated payments. Billgami is designed for solo mobile work at customer locations. Both handle estimates and invoices; the surrounding surface area (and monthly cost) is what differs.
Yes. Same workflow as mechanical repair. Itemize diagnostics (damage assessment), labor (per hour), parts (panels, paint, hardware), and any specialty work. Send the estimate, get approval, do the work, convert to invoice.
That is the estimate workflow. Build the estimate on-site, share the PDF through email or text, wait for the customer to reply with approval, then start the work. When you finish, convert the estimate into the invoice in the app.
Four tiers on the App Store: Free, $14.99 monthly, $111.99 annual, or $249.99 lifetime. Current prices are on the App Store listing. No per-invoice fee, no mobile-mechanic tier.
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