Invoice Koi vs Billia

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 Billia
Detail	Invoice Koi	Billia
What it does	Invoice app for contractors and the trades	Free professional invoices with no signup, no watermark, and no trial popups
Stage	Not given	Not given
Founded	Not given	Not given
Based in	SG	Not given
Pricing model	Freemium	Freemium
Pricing	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.	Free: $0 forever, unlimited invoices and estimates, clean PDF downloads, logo upload, custom notes, tax and discounts, multi-currency support, card payments (2% Billia fee plus Stripe). Pro: $8/month or $79/year—includes everything in Free plus saved invoices with cloud backup, recurring invoices, c
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	38 trade and country-specific invoice templates Clean PDF downloads with no watermark Multi-currency and tax support Logo upload and custom notes Card payment acceptance on invoices 13 free business calculators for pricing Recurring and auto-send invoices (Pro) Client management and history (Pro)
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 forever with no signup required No watermark or branding on downloaded PDFs Trade-specific templates with pre-filled tax labels and formats Separate numbering sequences for invoices and estimates
Community votes	0	0
DR (Domain Rating by Ahrefs)	12 +1 (up) since last check	3 no change since last check
Trust Flow (Majestic)	2	0
Citation Flow (Majestic)	21	17
Referring domains (Majestic)	8	16

5 details filled in for both companies.

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