Inside the EE Addons page exists the Safe Harbor Lite.
But the Add-on is disabled because it needs a License Key. I guess the download version seems to be the full commercial version.
Does exist a link for the Safe Harbor Lite without licence key?
From the link : https://expressionengine.com/add-ons/safe-harbor-lite is downloaded the commercial version that needs a licence key.
The Safe Harbor Lite could be downloaded here: https://eeharbor.com/safeharbor
It works well with EE 7.2.4