10K Books is an offline-first reading app for finishing more ideas in less time. Explore 1,000+ summaries across English, Spanish, and French. Read them in a calm reader or listen with sentence-highlighted read-aloud. Your library, progress, highlights, and streaks stay ready on-device, with nothing extra to download before a flight, commute, or patchy-signal trip. Biblio can answer questions about the summary you are reading when you are online.