Keep the pages that matter, and bring your shelves over from Goodreads.
• Keep a page: photograph it, run the highlighter over the lines you love, and add a note. It stays with the book, on every device.
• Settings → Import from Goodreads brings your shelves across, with covers and page counts.
• A book you have not started says so, instead of "page 0".
• A book being timed offers "Open timer" on its page too.
• Inkspace opens with a loading ring instead of the sign-in page.