Reviewers largely see Arc as a thoughtful rethink of browsing: spaces, vertical tabs, split view, profiles, shortcuts, and sync help people manage heavy tab loads and separate work from personal use, often replacing Chrome or Safari. The UI is widely praised as clean, smooth, and distinctive, though many say it takes time to learn. The main complaints are practical: missing or awkward bookmarks, some site and extension compatibility gaps, Windows rough edges, CPU and memory use, occasional lag or crashes, and worry that development focus may be shifting elsewhere.