Apidog vs SoapUI / ReadyAPI

From $9 per user/month (Basic, billed annually; Professional $18, Enterprise $27)

Free tier available

Priced noticeably below Postman for comparable team functionality.

SmartBear publishes no ReadyAPI price; the pricing page is a quote request. ReadyAPI is licensed per module — Test, Performance, Virtualization — and buying all three multiplies the cost, with floating licences for CI costing more than fixed seats.

Free plan for small teams with core design, mock and test features.

SoapUI open source is free and covers SOAP and REST functional testing.

Established

Apidog · since 2022

Widely used

SmartBear · since 2005

• Schema-driven mocks and assertions stay correct as the API definition changes.
• Meaningfully cheaper than Postman for equivalent team features.
• One tool instead of three for design, mocking and documentation.

• Unmatched SOAP, WSDL and JMS support for legacy enterprise integration work.
• ReadyAPI bundles functional, security, load and virtualisation in one product family.
• Groovy scripting escape hatch for anything the GUI cannot express.

• Younger vendor with a smaller community and fewer third-party integrations.
• Data residency and cloud storage need checking for regulated environments.
• Documentation quality is uneven in places.

• Dated Java desktop UI that feels heavy next to modern clients.
• Project files are XML and merge badly in version control.
• Modular licensing gets expensive fast.

Teams doing design-first API development who want mocks and docs generated from the spec.

Enterprises testing SOAP services, message queues and legacy integration layers.