Comment by ashdev

This is pretty impressive. A lot of people underestimate the amount of work required to make something available offline. Planning the syncing architecture alone is a monumental task, especially at the scale Notion operates. I built a custom sync solution for my own app, Brisqi (https://brisqi.com), and it took me weeks to get it right, albeit with some trade-offs.

Kudos to the Notion engineering team for achieving this milestone.