There is a new note-taking app that is similar but better than Notion that is having a great reception in the Mac community: Craft: https://www.craft.do It allows for bidirectional linking and backlinks. They have an active user forum on Slack - see the bottom of their home page. But their app is not compatible (yet) with Hook. I have asked them to look into it and Viktor at Craft said they will check it. I explained that Hook allows linking across app documents etc.
Their app is written native for the Mac and iOS. See also here: https://www.craft.do/media
SHort youtube video here about the iPad and iPhone user interface. Mac works also well. https://www.youtube.com/watch?v=qD665WBmGhs