The Free Alternative to NaturalReader
NaturalReader charges $99/year for premium voices. CastReader offers natural AI voices, paragraph highlighting, and 15+ platform extractors — completely free. No account needed.
Everything NaturalReader Does, Without the Price Tag
Side-by-side: what you get for $0 vs $99/year
Free Forever
No Subscription, No Limits
NaturalReader's free tier limits you to 20 minutes per day. Premium costs $99/year. CastReader is 100% free — unlimited usage, all voices, all languages, no account required. Not a trial. Not a freemium trap.
Better Extraction
Works on Sites NaturalReader Can't Handle
NaturalReader struggles with Kindle Cloud Reader, WeRead, Notion, and Google Docs. CastReader has dedicated extractors for 15+ platforms — handling canvas rendering, font encryption, and complex DOM structures.
Real-Time Highlighting
Paragraph-Level Highlighting + Auto-Scroll
NaturalReader highlights sentence by sentence. CastReader highlights at paragraph level with automatic scrolling — click any paragraph to jump there instantly. Follow along naturally as you listen.
Frequently Asked Questions
Switching from NaturalReader to CastReader
Is CastReader really free? What's the catch?
No catch. CastReader uses the open-source Kokoro TTS model. There's no API cost, so there's no reason to charge. Unlimited usage, all features, forever free.
How does voice quality compare to NaturalReader?
CastReader uses the Kokoro TTS model which produces natural, expressive voices in 40+ languages. Many users find it comparable to NaturalReader's premium voices. Try it yourself — it's free.
Does CastReader have a desktop app?
Currently CastReader is a Chrome/Edge browser extension. It works on any web page you open in the browser, including PDFs, Google Docs, and Kindle Cloud Reader.
Can I upload documents like in NaturalReader?
CastReader works differently — it reads web pages directly rather than uploading files. Open any page or document in your browser, click the extension icon, and it starts reading. For PDFs, just open them in Chrome.
Does it support offline reading?
CastReader requires an internet connection for voice generation. The text extraction happens locally in your browser, but audio is generated server-side for the best voice quality.
What platforms does CastReader support?
CastReader works on any web page, with dedicated extractors for 15+ platforms including Kindle Cloud Reader, WeRead, Notion, Google Docs, Medium, Substack, Wikipedia, and more.
Start Listening Now
Completely free. No signup. No limits. Install and start listening.