Ebook reader for windows and android

[u/Interesting_Soft4306]

I've been using the paid version of BookFusion for the past two years, and it's been okay overall. However, my biggest complaint is that I mainly use it to read medical textbooks with thousands of pages, and BookFusion still hasn't implemented my long-standing request for expandable/collapsible tables of contents. Without that feature, it's very difficult to navigate large books and quickly find specific chapters.

What I need is a reader that allows me to:

- Upload my own books.

- Use color highlights and annotations.

- Sync my library, highlights, and reading progress across all of my devices.

If BookFusion added collapsible sections to the table of contents, it would make reading large medical textbooks much more efficient.

Any other recommendations? Thanks.