Certified Payroll vs Invoice Koi

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Certified Payroll compared with Invoice Koi
Detail	Certified Payroll	Invoice Koi
What it does	File your Davis-Bacon WH-347 certified payroll report in minutes	Invoice app for contractors and the trades
Stage	Not given	Not given
Founded	Not given	Not given
Based in	DE	SG
Pricing model	Freemium	Freemium
Pricing	Two free payrolls included with account signup (no credit card required). Then $79/month for unlimited projects and weekly payrolls, live wage-determination checks, continuation sheets for larger crews, three-year filing archive, no setup fee, no contract, cancel anytime.	Free to draft with no account needed. Subscription: US$9.99 per week (billed weekly) or US$99.99 per year (about US$8.33 per month, billed yearly). US App Store prices. Free trial included: two weeks free on annual plan, one week on weekly plan for eligible new iOS subscribers.
Key features	Fills both pages of official DOL Form WH-347 (Rev. January 2025) Checks base rate plus fringe against SAM.gov wage determination while hours are entered Flags overtime logged as straight time past 40 hours Applies registered apprentice percentages of the journeyworker rate Generates continuation sheets for crews larger than 8 workers Builds the PDF in the browser; payroll figures do not leave the machine Calculates gross wages and project totals while you type Reuses project wage determinations across weekly payrolls Runs 8 compliance checks while you type Three-year filing archive for recurring projects	Unlimited invoices, estimates and receipts with subscription Nine customizable invoice templates with logo and accent color Price book for labor, material and hire rates Receipt scanning with AI that reads merchant, amount, tax and category Time tracking and jobs calendar that turn into invoice lines Recurring invoices Reports as CSV, spreadsheet or PDF Portable backup file you own Core invoicing works offline Stripe payment collection with automatic payment recording
What makes it different	Live wage rate checks against SAM.gov before you submit, not cached data Uses the government's actual WH-347 form, not a redrawn approximation PDF built in your browser so payroll data never leaves your machine No setup fee, no contract, cancel anytime	Works completely offline for core invoicing and PDF creation No account required to start drafting and creating invoices Saved clients and rates auto-fill invoices to save time Estimate converts to invoice in one tap with no re-entry Free to draft and subscribe only to send invoices
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet −1 (down) since last check	12 +1 (up) since last check
Trust Flow (Majestic)	2	2
Citation Flow (Majestic)	14	21
Referring domains (Majestic)	7	8

6 details filled in for both companies.

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