WordPress 6.8+ and PHP 7.4+. Works with the block editor natively. Compatible with any properly-coded WordPress theme — the block renders inside standard post content.
Yes. Charts render on the front end and are built to work with common cache and CDN setups.
Your data lives in your own database, in a custom table (wp_pressviz_charts). Nothing needs to leave your site for the chart to work.
Yes, by design. PressViz is built around the block editor and does not rely on shortcodes or the classic editor.
Deactivating the plugin leaves your data untouched. If you delete the plugin, the uninstall routine removes the database table and plugin options.
The PressViz team, mostly on nights and weekends.
Tell us. The free beta is free to test, and Pro has not launched yet.