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Flat Invoice vs Aviy

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

Flat Invoice compared with Aviy
Detail Flat InvoiceAviy logo Aviy
What it doesSend the invoice. Skip the chasing. Create invoices in one sentence in one second
StageNot given Not given
FoundedNot given Not given
Based inUS GB
Pricing modelFreemium Freemium
Pricing3 invoices per month free, then $2 per invoice. Pro plan: $9 per month or $79 per year for unlimited invoices. Edits, resends and reminders are free. Basic (free): unlimited document creation, PDF download and email/WhatsApp send, save up to 4 documents, 1 business profile, custom branding, Aviy logo on documents. Starter ($9.99/month): unlimited saved documents, no Aviy logo, custom branding, client management. Pro ($19.99/month): up to 5 busine
Key features
  • Automatic payment reminders on day 3, 7 and 14
  • Late fee calculator with interest calculation
  • Ready-to-send reminder email templates
  • Direct client payments
  • Optional Stripe integration for card and bank payments
  • Free edits and resends
  • Free late fee calculator tool
  • Unlimited invoice drafts on free plan
  • AI invoice creation from plain English descriptions
  • Support for 6 document types: invoices, estimates, quotes, credit notes, receipts, purchase orders
  • Real-time payment tracking with email open rates and bounce detection
  • 9 payment providers: Stripe, PayPal, Square, Mollie, GoCardless, Mercado Pago, Paystack, Flutterwave, Razorpay, plus USDT and bank transfer
  • Support for 150+ currencies and 60+ languages
  • Customizable templates with logo and branding options
  • Team collaboration with role-based access
  • Estimate-to-invoice conversion with one click
  • Invoice creation via WhatsApp, Telegram, Slack, Discord, Messenger, iMessage
What makes it different
  • Never touches client payments or takes a percentage
  • Automatic reminders reduce payment chasing
  • Free late fee calculator included with service
  • Simple pricing with no setup fees
  • No signup required to create your first invoice
  • AI generates professional invoices in seconds from plain English
  • Completely free with no credit card required
  • Automatic payment reconciliation with zero fees from Aviy
  • Available in 190+ countries with multi-currency and multilingual support
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check6 +1 (up) since last check
Trust Flow (Majestic)03
Citation Flow (Majestic)1226
Referring domains (Majestic)360

6 details filled in for both companies.

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