If you're interested in giving it a try, feel free to reach out. Please know that it's still very much a work in progress, but core functionality and the guts of the app are mostly in place.
Amnesia requires a browser extension to record your history. The extension for Safari is included in the app and can be enabled in Safari's Preferences.
The Chrome / Brave extensions will need to be installed manually. Because it has not yet been approved by Google, you'll need to unzip the file and load it as an "unpacked extension".
An extension for Firefox is being worked on.