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SPECIFICTION
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Adyen vs WP Simple Pay

Adyen

adyen.com

WP Simple Pay

wpsimplepay.com

Side by side

FigureAdyenWP Simple Pay
Price from—$4.13/mo
Free plan——
Free trial——
Open source——
WebYesYes
iOSYes—
AndroidYes—
APIYes—
Self-hosted—Yes
Plans published24
Spec score · Payment Processing Software8.9 (#7)7.1 (#57)
IntegrationsAdyen provides a Shopify payments-app integration that requires Shopify Checkout Extensibility.The pricing comparison lists AffiliateWP, Divi, Elementor, Block Editor, Zapier, and webhooks as integrations.
Payment methodsThe online-payments product supports more than 200 payment methods through one integration.The site lists cards, US bank accounts, SEPA Direct Debit, and buy-now-pay-later options including Klarna, Afterpay/Clearpay, and Affirm.
SecurityAdyen’s help page states that it is PCI DSS v4.0 Level 1 compliant and undergoes an annual external audit by a Qualified Security Assessor.The site says payment processing and storage use Stripe’s PCI-compliant servers and that payment information does not touch the user's server.

Plans

Adyen

  • Interchange++$0.13, paid once
  • Pay per transaction$0.13, paid once

Adyen pricing →

WP Simple Pay

  • Personal$49.50 a year
  • Plus$99.50 a year
  • Professional$199.50 a year
  • Elite$299.50 a year

WP Simple Pay pricing →

In their own words

Adyen

Adyen is an online payments platform for businesses that accept, optimize, and settle payments through one integration. It offers access to more than 200 payment methods and supports 136 currencies. Businesses can use ready-made Drop-in checkout components or create a custom flow with the API. Adyen describes AI tools for checkout personalization, authentication, fraud protection, tokenization, and payment cost optimization. Local acquiring through local licenses is presented as a way to improve authorization rates and lower costs. The platform supports recurring and marketplace payments, with payouts in 36 countries. Listed integrations include Adobe Commerce, Salesforce Commerce Cloud, NetSuite, Shopify, and Microsoft Dynamics 365. It is available through web, Android, iOS, and API. Pricing is transaction-based, with no setup or monthly fees and a fixed processing fee plus a payment-method fee for each transaction. The stated starting price is $0.13. Adyen describes its platform as built for global businesses and enterprise payment volume.

Visit adyen.com

WP Simple Pay

WP Simple Pay has no write-up on Specifiction yet; its figures are above.

Visit wpsimplepay.com