# Castly: AI Audiobook Reader — EPUB, PDF & Character Voices

> EPUB, PDF & Character Voices (iPhone/iPad app by SlothEase.)

- Source: https://appshunter.io/ios/app/castly-ai-audiobook-reader/id6768542554 (this page in markdown: same URL + `.md`)
- Developer: [SlothEase](https://appshunter.io/developer/1816632091)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 18.0 · 29 MB
- Languages: American English, French (France), Japanese, Korean, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-07-02
- Data updated: 2026-10-31

## What is Castly?

Give every character a voice. Turn your own EPUB, PDF, and TXT ebooks into audiobooks with Castly. AI identifies characters in your story and assigns different voices to narration and dialogue, making it easier to follow who is speaking.

YOUR BOOKS, READY TO LISTEN
Import a novel or ebook, check its chapters, and start listening. Keep your books together in your library and make time for a story on your commute, on a walk, or before bed.

CHOOSE A VOICE FOR EACH CHARACTER
Give the narrator and characters their own voices. Preview and choose voices to match the people you imagine, then adjust the assignments to suit your story.

READ ALONG AND PICK UP WHERE YOU LEFT OFF
Follow the text while the audio plays, set a comfortable playback speed, and continue from your last listening position when you return.

BACKGROUND PLAYBACK AND SLEEP TIMER
Keep listening while using other apps. Set a sleep timer or stop playback after a selected chapter.

TRY A STORY BEFORE IMPORTING YOUR OWN
Sign in to try a built-in, three-chapter sample story and experience multi-character narration before adding your own ebooks.

CASTLY PRO
Some character voice features require Castly Pro. Check the available plans, prices, and included features in the app before subscribing.

Supports EPUB, PDF, and TXT files. PDFs must contain extractable text.

Privacy Policy: https://fit.slothease.com/en/privacy
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Castly Pro Monthly | $9.99 | per month |
| Castly Pro Annual | $49.99 | per year |


## Is Castly safe?

Not enough ratings yet to assess Castly.

## Is Castly legit?

Castly: AI Audiobook Reader appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Castly is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.9 — 2026-10-30

Updated the App Store listing and screenshots to highlight ebook import, multi-character audiobooks, and choosing and previewing character voices.

### 1.8 — 2026-10-26

Try multi-character narration with a three-chapter sample story in your language after signing in.
Play prerecorded audio directly, with downloaded audio cached for smoother repeat listening.
Updated the Chinese app name across the Home Screen, sign-in screen, and CarPlay.

### 1.7 — 2026-10-24

Open a dedicated search page from your library.
Keep your search and results when returning from a book.
Improved navigation and added crash diagnostics.

### 1.6 — 2026-10-15

Improved subscription analytics.

### 1.5 — 2026-10-12

Updated App Store names and subtitles across supported languages to make Castly's AI audiobook and character voice features clearer.

## Apps similar to Castly

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [BookNPC: AI Audiobook Maker](https://appshunter.io/ios/app/booknpc-ai-audiobook-maker/id6743934058) | 3.5 (2) | Free | Utilities |
| [GrepTag: Search & Tag Books](https://appshunter.io/ios/app/greptag-search-and-tag-books/id6779977609) | — | Free | Utilities |
| [ShhVoice](https://appshunter.io/ios/app/shhvoice/id6813780686) | — | Free | Utilities |
| [第二相册-外置硬盘照片备份](https://appshunter.io/ios/app/id6759664558) | — | Free | Utilities |
| [幻影通讯录](https://appshunter.io/ios/app/id1564091097) | — | Free | Utilities |
| [Meow Mood Diary](https://appshunter.io/ios/app/meow-mood-diary/id6767560237) | — | Free | Utilities |

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All apps by SlothEase: https://appshunter.io/developer/1816632091

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-31.*