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Tallymark vs send21

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

Tallymark compared with send21
DetailTallymark logo Tallymarksend21 logo send21
What it doesFree invoicing software for Stripe with no monthly or percentage fees Non-custodial crypto payment links and API for people and AI agents
StageEstablished Not given
Founded2015 Not given
Based inCA Not given
Pricing modelFree Paid
PricingFree. You only pay Stripe's standard processing fees (2.9% + 30¢ per transaction in the US). One fee per payment: 0.49% on $0-$10, 0.39% on $10-$50, 0.29% on $50-$100, 0.19% on $100-$500, 0.14% on $500-$2,000, 0.09% on $2,000-$10,000, 0.04% on $10,000-$50,000, 0.02% on $50,000-$100,000, 0.01% above $100,000. Minimum $0.01, maximum $100. No subscription, setup fee or monthly minimum.
Key features
  • Create professional invoices with logo and brand colors
  • Invoices in 8 languages
  • Automatic payment processing with card on file
  • Recurring invoices and subscription billing
  • AutoPay for instant automatic payments
  • Support for multiple currencies
  • API and AI agent integrations
  • Invoice tracking and payment notifications
  • Custom fields for sales pages
  • REST API with scoped keys and batch drafts up to 25 per call
  • Support for Bitcoin PSBT and batching wallets like Safe
  • No KYC required, encrypted email storage only
  • Idempotency keys for safe retries
  • Shopify connection with custom app and setup help
  • Fee collected separately on Ethereum and EVM chains via Safe batching
What makes it different
  • Completely free with no monthly or percentage fees
  • Payment form embedded directly in invoices for faster checkout
  • Instant automatic payments with AutoPay
  • One-page e-commerce store with no commissions
  • API and AI agent ready for custom integrations
Not given
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check6 +2 (up) since last check
Trust Flow (Majestic)015
Citation Flow (Majestic)1928
Referring domains (Majestic)535

4 details filled in for both companies.

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