LOSL
City of Los Angeles
About this app
- Installs 28k+
- Age 10
- Updated Feb 25, 2026
- OS Android
Editor reviews
LOSL is a smart books and reference app that helps you find, read, and organize knowledge efficiently. Designed for students, researchers, and lifelong learners, it combines an intuitive ebook and PDF reader with powerful search, notes, and citation tools.
Core features include unified search across your library with fast previews and filters, a distraction-free reader with highlights, notes, bookmarks, and offline access, plus one-tap citations and cloud sync to keep references and progress consistent on all devices. With AI-assisted search and summaries, a built-in dictionary and translation, and a clean study-first design, LOSL streamlines research and boosts productivity. Keywords include ebook reader, PDF reader, AI search, offline dictionary, cloud sync, citation manager, study tool.
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How to use:
1. Download and install LOSL, then sign in or continue as a guest to create your personal library.
2. Import EPUB or PDF files from your device or cloud storage to start building your collection.
3. Use the global search to find topics, authors, or keywords across your library; apply filters to refine results.
4. Open a book or document to read, then highlight text, add notes, and set bookmarks; tap any word for dictionary and translation.
5. Save sources to collections and generate citations in your preferred style; enable cloud sync and offline mode to read anywhere.
6. Turn on AI summaries and cross-references to quickly grasp key ideas and jump between related content when available.