Notaku supports protecting your docs site with a password.
To add a password go to your site settings tab and put the password you want.
You can then distribute the password to your users and give them access to the site.
<aside> ❗ Notaku still requires your Notion pages to be public, this is not a problem as long as you keep the Notion url secret
</aside>
<aside> ❗ If you change the password of your site while some users are already logged in they will lose access, you will need to distribute them the password again
</aside>
No, password protection is available only on Notaku paid plans.