LibriVox vs Ubook

LibriVox is a free audiobook library built from volunteer recordings of public-domain books. Listeners can browse by author, title, genre or subject, and language, then play or download individual audio files, download a book ZIP, subscribe to RSS or use BitTorrent. Catalog pages provide 64 kbps and 128 kbps MP3 files, and most books also have an M4B option. Its podcast presents one book at a time in three audio installments per week. Recordings are accepted in all languages; volunteers need no prior experience or audition, just a voice, a computer and free recording software. The catalog API offers audiobook, track and author endpoints for apps that refresh catalog data. It returns 50 records by default, up to 500 per request, with offset batches for larger pulls. Recordings are donated to the public domain, though status can vary by country. LibriVox began in 2005 and is available on Android, iOS, Linux, macOS, web and Windows. The catalog can include older works with language or ideas some readers find offensive or antiquated.

Ubook is a streaming subscription service for audiobooks, ebooks, and other digital content, available on Android, iOS, and the web. Its catalog lists more than 500,000 items, including podcasts, documentaries, series, newspapers, magazines, and music. Subscribers can download audiobooks, ebooks, series, and podcasts for offline access. Playback speed controls and markers for favorite passages support listening; where a title has both formats, users can choose to read or listen. Ubook says activity can synchronize across devices, so a session started on a phone can continue on a computer or tablet. A 30-day trial offers unlimited reading and listening at no charge, after which users can cancel or accept a subscription offer. Premium costs 24.90 BRL a month and includes the Premium catalog and offline mode. Premium+ costs 39.90 BRL a month and adds a partner app subscription and one extra book per month; named partner examples include Deezer, Looke, and NBA. Content visibility can vary by location, marketplace, and plan. Ubook is headquartered in Rio de Janeiro, Brazil.