NaturalReader: AI text-to-speech app for personal use that reads PDFs, documents, books, webpages and study materials aloud. Book2Speech is narrower on purpose: it turns whole books and documents into chaptered narration you listen to in the browser and the iPhone app. The table lists what each one does, checked against NaturalReader’s own pages on 2026-09-12.
Where Book2Speech is the better choice
•
Whole books: chapters come from the file, front matter is classified and the player suggests where the story starts.
•
Long-form continuity: narration is generated ahead of you and streamed, and already generated chapters replay free.
•
70,000 public-domain classics ready to narrate from the Discover tab, plus a no-account sample on the web.
•
Your listening position syncs between the web player and the iPhone app.
•
Straightforward pricing by hours of new narration, from $4.99 a month.
What Book2Speech does not do
•
No offline listening yet; narration streams while online.
•
No native Android app yet (in closed testing); the web app works on Android.
•
No pronunciation editor; unusual names are pronounced by best guess.
•
No instant MP3/M4B export; a full-book file can be requested.
How this comparison was made
Every NaturalReader value in the table was checked on a vendor page or its App Store listing on 2026-09-12; the links are listed under the table. Where a feature could not be confirmed on a fetched page it is marked “Not verified” rather than guessed. Book2Speech values reflect the product on the same date. If you spot something out of date, email support@book2speech.com.
Pricing shown in USD on 2026-09-12 from the vendor help centre.
Only PDF is explicitly named among input formats on the fetched web-app page; EPUB, DOCX, TXT and MOBI are shown as not verified.
Offline listening in-app was not verified; the vendor advertises MP3 download for offline listening.