CastReader

Reads aloud text from webpages, PDFs, Kindle books, and AI answers, with words highlighted in sync as they are spoken, allowing users to follow along visually.

Provides AI-generated explanations for difficult or dense passages, which are anchored to the original source text with visual cues like pen marks, subtitles, and spoken guidance, helping users understand complex content.

Allows users to record a sample of their own voice to create multiple private voice clones, which can then be applied to read aloud and explain PDF, EPUB, Word, or TXT files.

Available as native applications for iPhone, iPad, and Android phones/tablets, and as browser extensions for Chrome, Edge, and Safari for Mac, ensuring broad accessibility across devices.

Narrates content from Kindle, WeRead, and O'Reilly, including Kindle Cloud Reader, with features like auto-page turning, chapter-by-chapter narration, and mobile app support for listening away from a desk.

Offers a REST API for developers to integrate private voice cloning and text-to-speech capabilities into their own products, supporting 10 languages and providing MP3 or WAV output.

Provides a voice catalog with 336 selectable voices across 28 languages, including both free and Pro options, with English and Mandarin being generally available.

Supports uploading and reading aloud local documents in PDF, Word (DOCX), and TXT formats, with the original file remaining on the user's device for privacy.