Depending on the country your business operates in, you need to fulfill certain conditions related to informing users about the third-party applications you're using. This includes informing users about the fact you're using Hotjar to track their behavior on your website.
We encourage you to make sure your Terms of Service or Privacy Policy properly communicate to your users how you are using Hotjar (and any other similar services) on your website. The GDPR and other privacy regulations can heavily penalize you if your website isn't compliant with this requirement.
We recommend you ensure your policies are up to date and clear to your readers. To update your Terms of Service or Privacy Policy, you can use the example you'll find in Sample Wording for Your Privacy Policy and adjust it to your business context.
To learn more about Hotjar's features that help you stay compliant with local privacy regulations, take a look at the following guides: