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Invoice Koi vs Billsmith

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

Invoice Koi compared with Billsmith
DetailInvoice Koi logo Invoice KoiBillsmith logo Billsmith
What it doesInvoice app for contractors and the trades Free invoice generator, no sign-up required
StageNot given Not given
FoundedNot given Not given
Based inSG GB
Pricing modelFreemium Free
PricingFree 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. Free to use. The Billsmith iPhone app is free to start or available as a one-time purchase.
Key features
  • 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
  • Create invoices, quotes and receipts
  • UK VAT invoice support with HMRC compliance
  • CIS deduction calculations for construction work
  • Construction reverse charge handling
  • US sales tax calculations
  • Download PDFs with no server upload
  • Local browser storage of business details
  • Payment tracking and payment received marking
  • Custom payment terms and due dates
  • Add business logo to invoices
What makes it different
  • 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
  • Completely free with no sign-up required
  • Nothing uploaded to servers, all processing in browser
  • Built on official HMRC rules and worked examples
  • Covers complex UK tax scenarios like reverse charge and CIS
  • iPhone app for creating quotes and invoices on the job
Community votes00
DR (Domain Rating by Ahrefs)12 +1 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)20
Citation Flow (Majestic)210
Referring domains (Majestic)80

6 details filled in for both companies.

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