[_hzw]

I know this is very niche, so I implemented it myself :)

https://luvdb.com/read/_hzw/checkins/

[stehardcover]

Okay, I think this partly answers my previous question. Looks great! We're looking to also let you add where you actually are in the book (page/minute) so the result can be close to an async book club. You'll also be able to set privacy, so they can be private notes or only shared with your network.