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Kitaphone vs send21

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

Kitaphone compared with send21
DetailKitaphone logo Kitaphonesend21 logo send21
What it doesMake cheap international calls from your browser to 180 destinations without an app or SIM card Non-custodial crypto payment links and API for people and AI agents
StageNot given Not given
FoundedNot given Not given
Based inMY Not given
Pricing modelNot given Paid
PricingPay-as-you-go rates starting from $0.02 USD per minute to destination countries; first call is free. No subscription required. 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
  • Call 180 destinations from browser without app or SIM
  • No phone or ID verification required to sign up
  • Pay-as-you-go credits with no subscriptions
  • Get a virtual phone number from available countries
  • Send and receive SMS messages from your Kitaphone number
  • Answer incoming calls in browser
  • WebRTC encrypted calling technology
  • Credits never expire
  • 100% money-back guarantee within two weeks
  • 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
  • No app installation required, works directly in browser
  • Recipients need only a phone, not an app or internet connection
  • Calls to any mobile or landline, not just users of the service
  • Pay only for what you use with no hidden contracts or subscriptions
  • Sign up in seconds with email only, no authentication needed
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)6 no change since last check6 +2 (up) since last check
Trust Flow (Majestic)315
Citation Flow (Majestic)2228
Referring domains (Majestic)3035

3 details filled in for both companies.

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