Reviewers largely see Readwise as a practical reading and knowledge tool that helps them revisit highlights, remember what they read, and turn scattered notes into a usable system. People repeatedly praise its spaced-repetition rhythm, broad syncing across reading sources, and Reader app for saving, reading, and even listening to articles. Some also value downstream integrations like Notion and its API. Complaints are limited but specific: a forced-feeling onboarding flow, gaps between Reader and core highlight workflows, and weak support for Chinese note-taking.