← Back to BlogApple Books comes pre-installed on every iPhone and iPad. It's a solid e-reader for purchased books and imported EPUBs, and it has a basic text-to-speech feature. So do you need another app? If you want to listen to your documents — not just read them — the answer is yes. Apple Books cannot read PDFs aloud at all. It doesn't support MOBI, DOCX, FB2, CBZ, RTF, TXT, or HTML. Its TTS has no sentence highlighting, no sleep timer, and limited voice options. SpeakCove is built specifically to turn your documents into a listening experience, with 9 format support and features designed for audio consumption.
| Feature | SpeakCove | Apple Books |
|---|---|---|
| Price | Free (premium $14.99 one-time) | Free (pre-installed) |
| PDF Read Aloud | ✓ Yes — full TTS for PDFs | No — can display PDFs but not read them aloud |
| Supported Formats | ✓ 9 (PDF, EPUB, MOBI, DOCX, FB2, CBZ, RTF, TXT, HTML) | EPUB only for TTS (PDF display only) |
| Sentence Highlighting | ✓ Yes — real-time sentence highlighting | No |
| Voice Selection | ✓ 10 on-device neural voices (2 free) | Limited system voices |
| Speed Control | ✓ Speed scrubber (0.75x to 2x) | Basic speed options |
| Sleep Timer | ✓ 5 to 60 minutes | Not available |
| Document Import | ✓ Import from Files, Share Sheet, or direct download | Limited — mainly iBooks Store purchases |
| iCloud Sync | Yes — library and reading position | Yes — for purchased books |
| Book Store | Free Project Gutenberg library + Semantic Scholar papers | iBooks Store (paid books) |
| Offline Support | 100% offline, all features | Yes (downloaded books) |
| Privacy | ✓ Zero data collection, on-device | Apple ecosystem (Apple privacy standards) |
Where Apple Books Falls Short
- ✕Cannot read PDFs aloud — only displays them
- ✕No support for MOBI, DOCX, FB2, CBZ, RTF, TXT, or HTML
- ✕No sentence highlighting during text-to-speech
- ✕Limited voice selection compared to a dedicated TTS app
- ✕No sleep timer for listening sessions
- ✕Basic speed control without a fine-grained scrubber
- ✕Designed primarily as a visual reader, not an audio reader
- ✕Importing your own documents is limited and unintuitive
Where SpeakCove Excels
- ✓Reads PDFs aloud — Apple Books cannot
- ✓Supports 9 document formats including MOBI, DOCX, FB2, CBZ, RTF, TXT, and HTML
- ✓Real-time sentence highlighting so you can follow along while listening
- ✓10 on-device neural voices with distinct personalities (2 free, 8 premium)
- ✓Speed scrubber accessible during playback (0.75x to 2x)
- ✓Sleep timer from 5 to 60 minutes
- ✓Background and lock screen playback with Now Playing controls (premium)
- ✓Home screen widgets for quick access to your library
- ✓Built-in free book library (Project Gutenberg) and Semantic Scholar paper import
- ✓Almost entirely free — no ads, no account, no time limits
Try SpeakCove Free
No sign-up required. Start listening in seconds.
Free to use, no subscription, no account
Use everything without signing up or paying. No time limits, no daily caps.
One lifetime purchase unlocks everything
$14.99 once — all 10 voices, background playback, unlimited library. Forever.
100% on-device, private, works offline
Zero data collection, no cloud processing, works in airplane mode.
Frequently Asked Questions
Can Apple Books read PDFs aloud?
No. Apple Books can display PDFs but cannot read them aloud with text-to-speech. It only supports TTS for EPUBs purchased from the iBooks Store or imported. SpeakCove reads PDFs aloud along with 8 other document formats.
Can Apple Books read MOBI, DOCX, or other formats?
No. Apple Books only supports EPUBs and PDFs (display only for PDFs). It cannot open MOBI, DOCX, FB2, CBZ, RTF, TXT, or HTML files. SpeakCove supports all 9 of these formats.
Does Apple Books have sentence highlighting during TTS?
No. When Apple Books reads aloud, there is no sentence-level highlighting to help you follow along. SpeakCove highlights the current sentence in real time as it reads.
Is SpeakCove free like Apple Books?
Almost everything in SpeakCove is free — all 9 formats, all 5 languages, speed control, sleep timer, iCloud sync, widgets, and sentence highlighting. No ads, no account, no time limits. The only premium features ($14.99 one-time) are 8 additional voices and background/locked-screen playback.
Does SpeakCove work offline?
Yes, 100%. All voice synthesis and document processing happens on your device. SpeakCove works in airplane mode — just like Apple Books.
Should I use Apple Books or SpeakCove?
If you only read EPUBs purchased from the iBooks Store and don't need TTS, Apple Books is fine. If you want to listen to your own documents — PDFs, EPUBs, MOBI, DOCX, or anything else — with sentence highlighting, speed control, and a sleep timer, SpeakCove is the better choice.
The Verdict
Apple Books is a great e-reader. If you buy books from the iBooks Store and prefer reading with your eyes, it does the job well. But as a listening tool, it falls short. Apple Books cannot read PDFs aloud. It only handles EPUBs for TTS, with no sentence highlighting, no sleep timer, and limited voices. If your library includes PDFs, MOBI files, DOCX documents, or anything beyond EPUB, Apple Books simply cannot help. SpeakCove is built for listening. It reads 9 formats aloud with sentence highlighting, speed control, a sleep timer, and 10 neural voices — and almost everything is free. If you want to turn your documents into something you can listen to, SpeakCove picks up where Apple Books leaves off.
Try SpeakCove Free
No sign-up required. Start listening in seconds.
Related Posts
SpeakCove vs iPhone Spoken Content: Honest Comparison 2026
iPhone's Speak Screen reads everything on screen — buttons, menus, and all. SpeakCove reads your actual documents with sentence highlighting, position memory, and a sleep timer.
How to Listen to EPUB Files on iPhone
Turn any EPUB ebook into spoken audio on your iPhone. SpeakCove reads EPUBs for free with sentence highlighting, a sleep timer, and no ads or account required.