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Flat Invoice vs Heft

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 Heft
Detail Flat InvoiceHeft logo Heft
What it doesSend the invoice. Skip the chasing. Your bookkeeping, done for you
StageNot given Not given
FoundedNot given Not given
Based inUS NL
Pricing modelFreemium Paid
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. Receipt agent €49/month for up to 150 payments a month, Receipt agent Plus €99/month for up to 300 payments a month. Billed monthly from day one, plus VAT or sales tax where it applies. Cancel any time, effective at the end of the month. In the eurozone you pay in euros, everywhere else in US dollar
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
  • Automatic receipt fetching from email and supplier portals
  • Receipt-to-payment matching
  • Portal login handling without fixed list
  • Monthly bookkeeping with accountant handover
  • DATEV export for German accountants
  • VAT returns through ELSTER
  • Subscription tracking and cancellation
  • Read-only bank access with fraud detection
  • Chat interface for spending questions
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
  • Fetches invoices directly from supplier portals without a fixed list, handling portal login automation
  • Processes data in the EU with GDPR compliance and no AI training on your data
  • Full bookkeeping for German companies including tax returns and annual accounts
  • Works across multiple banks in Germany, neighboring countries and the US
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check12 no change since last check
Trust Flow (Majestic)016
Citation Flow (Majestic)1230
Referring domains (Majestic)395

6 details filled in for both companies.

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