WebVortex Invoices gives you full invoice management inside your WordPress admin:
Recurring invoices in six billing intervals, with a built-in three-stage payment reminder flow that tells you exactly when to follow up — no subscription, no transaction fees.
This plugin’s premium licensing is powered by Freemius, a third-party service that handles licence activation, upgrades, and renewals.
What is sent and when: when the plugin connects (on activation, or when you choose to opt in), basic site data is shared with Freemius — site URL, WordPress/PHP version, plugin version, and an anonymised usage identifier — so that licence status can be verified and update/upgrade notices can be shown. If you purchase a premium licence, your licence key and the activating site’s URL are also sent to validate and track that activation. No client, invoice, or financial data created within this plugin (clients, invoices, catalog items, exchange rates) is ever sent to Freemius or any other external service.
This connection is only used for licensing. It does not affect the plugin’s core invoicing functionality, which works fully offline/self-hosted.
Freemius’s terms of service: https://freemius.com/terms/
Freemius’s privacy policy: https://freemius.com/privacy/