Built for contractors
You build things. Not spreadsheets.
Your job expenses, invoices, and profit are tracked automatically. Know exactly what each job made you — without touching a spreadsheet.
Nothing to learn. Nothing to manage. Check in from the app, a text, or your DMs.
Your business right now
Revenue this month$18,600
Expenses$11,200
Net profit$7,400
↑ 8% vs last month
2 invoices overdue$4,200 outstanding
This isn't bookkeeping software
Most tools make you do the work.
This one does it for you.
MarathonBooks runs in the background — your numbers are just there when you need them.
For contractors, this means:
- Know how much you made this week without opening anything
- See what each job actually earned you after materials and labor
- Know who still owes you and how long it's been
- Stay ahead on taxes — no surprises in April
- Send invoices from the job site in 10 seconds
Sound familiar?
Shoebox of receipts from Home Depot and Lowe's piling up
No idea which jobs actually made money until tax time
Chasing payments from clients who "forgot" to pay
Spending Sunday nights catching up on bookkeeping
Mixing personal and business expenses on the same card
Paying your accountant to organize your mess
MarathonBooks handles all of this automatically.
Real things contractors can say
In the app, over text, or from your DMs.
“Paid Home Depot $340 for the Martinez job”
→ Expense tracked to job
“Send $2,500 invoice to Johnson for bathroom remodel”
→ Invoice created and sent
“How much profit on the Martinez job?”
→ Job profitability breakdown
“Who hasn't paid me yet?”
→ Outstanding invoices listed
“What did I spend on materials this month?”
→ Material costs totaled
“Did Johnson pay yet?”
→ Payment status with details
What you get
Automatic tracking
Connect your bank. Everything is organized for you.
Works over text
Check your numbers or log something via SMS, WhatsApp, or DMs.
Invoicing built in
Send invoices and track payments. All in one place.
Stop worrying about your books.
They're already done.
Free to start. No credit card. Set up in minutes.