Readwise resurfaces your highlights so you don't forget what you read.
It automatically imports highlights from Kindle, Apple Books, Instapaper, Pocket, and PDFs, then sends you daily review emails with random selections.
The core features include daily email digests, export to Notion, Obsidian, and Roam, plus AI-powered Ghostreader to summarize or chat with your highlights.
Limitation: Readwise only works with content you've consumed like books and articles. It doesn't help with your own original notes, which is where tools like Daily Brain Bits fill the gap.