PREMIUM AUDIOBOOK READER FOR iOS
Your books, perfectly in sync.
Import your audiobooks and ebooks. Voxlight syncs real narration with text — so you can seamlessly switch between reading and listening, always keeping your place.
Works with M4B, MP3, M4A, and EPUB files. Requires iOS 17 or later.
THE PROBLEM
Why can't you sync your own audiobooks with your own ebooks?
You own the audiobook. You own the ebook. But no app on iOS lets you play them together — hearing the narrator while following along in the text, chapter by chapter.
Amazon's WhisperSync only works with matched Kindle and Audible titles from their catalog. Voice Dream and Speechify use text-to-speech instead of your audiobook's narrator. Storyteller requires a server, a command line, and hours of processing per book.
Voxlight changes this. Import your files, let the app do the work, and start your reading experience in minutes — not hours.
HOW IT WORKS
Three steps to immersive reading
Import Your Files
Select your audiobook (M4B, MP3, M4A) and your ebook (EPUB) from the Files app. Voxlight auto-detects metadata, cover art, and chapter structure.
Voxlight Syncs Them Automatically
Voxlight samples small portions of each chapter to match your audiobook to your ebook — no need to process the entire file. It runs in the background so you can start reading right away.
Read and Listen in Harmony
Your audiobook chapters and ebook chapters stay linked. Tap a chapter to jump between audio and text. Switch between reading and listening — your position stays in sync.
FEATURES
Built for reading and listening
Whether you read, listen, or do both — Voxlight has you covered.
Audio-Text Sync
Voxlight matches your audiobook chapters to your ebook chapters automatically. Tap any chapter to jump between audio and text. Lightweight processing keeps things fast without draining your battery.
Premium Audio Player
Variable speed from 0.5x to 3.0x with per-book memory. Sleep timer with shake-to-reset. Skip silence detection. 5-band equalizer. Smart rewind after pausing.
Beautiful EPUB Reader
Literata font by default with custom font loading. Adjustable typography down to 0.1pt. Six reading themes. In-page footnote popups. Page and scroll view modes.
Smart Chapter Mapping
Fuzzy title matching automatically aligns audio chapters to text chapters — even when your EPUB has extra front matter, prefaces, or differently numbered sections.
Plays Everywhere
Lock screen controls, Control Center, Dynamic Island, AirPods, AirPlay, and CarPlay. Voxlight works wherever you listen — at home, in the car, or on a walk.
iCloud Sync
Reading position, annotations, and settings sync automatically across your iPhone and iPad. Start on one device, pick up exactly where you left off on another.
Privacy First
All processing happens on your device. Your books, highlights, and listening habits never leave your phone. No accounts required. No tracking. No data harvesting.
CarPlay Ready
Browse your library, switch chapters, adjust speed, and control playback from your car's display. Voxlight is a first-class citizen on CarPlay.
Mac Processor Companion
Power users get word-level precision with our Mac companion app. Run advanced Whisper alignment on your Mac, then import to iOS — included with Pro.
COMPARISON
The only app that syncs your audiobooks with your ebooks
| Feature | Voxlight | Apple Books | Audible | Voice Dream | Speechify |
|---|---|---|---|---|---|
| Sync own audiobook + ebook | Yes | No | No | No | No |
| Real narrator sync (not TTS) | Yes | No | Paired catalog only | No | No |
| On-device processing | Yes | N/A | N/A | No | No |
| Custom EPUB reader | Yes | Limited | No (Kindle only) | Basic | Basic |
| Import your own files | Yes | No | No | Yes | Yes |
| Word-level sync precision | Via Mac Processor | No | No | No | No |
| Price per year | $29.99 | Free (no sync) | $179.40 | $50–100 | $139 |
POWER USERS
Word-Level Precision with Mac Processor
For readers who want the absolute best sync experience
Drop Files on Mac
Drag your audiobook and ebook into the Voxlight Mac companion. It accepts the same formats as the iOS app.
AI Processes Alignment
Whisper-powered forced alignment maps every word in your audiobook to the ebook text — producing word-level precision in seconds.
Import to iPhone
Sync the alignment data to Voxlight on your iPhone. Every word highlights in perfect time as you listen.
Included free with Voxlight Pro subscription
PRICING
Start free. Upgrade when you're ready.
No feature gates. No surprises. Just great reading.
FREE
forever
Get started with the full Voxlight experience.
- Up to 5 synced books
- On-device sync processing
- Premium audio player with EQ
- Full EPUB reader with themes
- Lock screen & background playback
VOXLIGHT PRO
$29.99 $19.99/year
First-year discount — limited time only
- Unlimited audiobook-ebook sync
- On-device sync processing
- Premium audio player with EQ
- Full EPUB reader with themes
- iCloud sync across devices
- CarPlay support
- Mac Processor companion app
- All future updates included
Try free with up to 5 synced books. Mac Processor is Pro-only.
ROADMAP
Built in the open. Always improving.
Phase 1 — MVP
IN PROGRESSThe foundation. A premium audio player and EPUB reader that work beautifully on their own, with automatic chapter-level sync between audio and text.
- • AVAudioEngine-powered playback with variable speed, sleep timer, skip silence
- • Beautiful EPUB renderer with custom fonts, themes, and footnote popups
- • Library management with cover art, metadata, and search
- • Lock screen, Control Center, and background playback
- • Automatic chapter sync using lightweight audio sampling
Phase 2 — v1.0 Release
COMING SOONDeeper sync. Sentence-level highlighting that follows the narrator word by word as they read.
- • Sentence-level text highlighting with tap-to-jump
- • Full import wizard with progressive processing
- • CarPlay support
- • iCloud position and annotation sync
- • Mac Processor companion app for word-level alignment
- • Power user workflow: Mac processing → iOS import via AirDrop or iCloud
- • Free tier (up to 5 synced books)
Phase 3 — v2.0
PLANNEDThe ecosystem. Streaming integration, advanced annotations, word-level precision, and platform expansion.
- • Optimized on-device CoreML Whisper models
- • Plex and Audiobookshelf streaming integration
- • Advanced library with smart collections and hierarchical tags
- • Dual-anchored annotations with Readwise, Obsidian, and Notion export
- • Word-level highlighting precision
- • Reading statistics and streaks
- • Apple Watch companion
- • iPad-optimized layout
- • visionOS spatial reading experience
FAQ
Frequently asked questions
Voxlight supports M4B, MP3, M4A, AAC, FLAC, and WAV for audiobooks, and EPUB for ebooks. M4B is recommended for audiobooks as it preserves chapter markers in a single file. PDF and TXT support is planned for future releases.
Voxlight listens to short samples from each chapter of your audiobook and matches them to the corresponding ebook chapters. Instead of processing the entire audiobook, it only needs small portions — making sync fast and lightweight. Everything runs on your device.
Because Voxlight only samples small portions of each chapter rather than processing the entire audiobook, sync is fast — typically just a few minutes. You can start reading and listening right away while the rest of your book syncs in the background.
No. All processing happens on-device using Apple's Neural Engine. Your audiobook files, ebook files, and reading data never leave your phone. The only network features are optional iCloud sync (for your own devices) and optional Readwise export (which you explicitly trigger). No analytics are collected without your consent.
Absolutely. Voxlight is a fully featured audiobook player and EPUB reader independently. You can use it as a standalone audiobook player, a standalone ebook reader, or both together with sync. Many users may find value in the player or reader alone.
Voxlight requires iOS 17 or later (iPhone) or iPadOS 17 or later (iPad). CarPlay is supported for in-car listening. Apple Watch and visionOS support are planned for future releases.
You can sync up to 5 audiobook-ebook pairs for free, with no time limit. This lets you fully experience the sync feature before subscribing. The audio player and EPUB reader work without limits on the free tier — the sync feature is the only gated functionality.
Voxlight works with DRM-free audiobook and ebook files. If you have DRM-free files in supported formats, they will work. Voxlight does not circumvent DRM protection. Many audiobook retailers (Libro.fm, Google Play Books, authors' direct sales) sell DRM-free files.
Voice Dream and Speechify use text-to-speech (TTS) — a synthetic computer voice reads your ebook aloud. Voxlight syncs your actual audiobook narration (the real narrator's voice) with your ebook text. The experience is fundamentally different: you hear the performance the author and narrator intended.
Voxlight is offered as an annual subscription at $29.99/year. This funds ongoing development, including performance optimizations, platform support, and feature updates. The subscription includes all updates at no additional cost.
No. Voxlight works entirely on your iPhone with on-device sync processing. The Mac Processor is an optional companion app for power users who want word-level alignment precision. Most users will get great results with the built-in on-device sync.
It's a companion app included with your Voxlight Pro subscription. It uses advanced Whisper AI alignment to create word-level sync between your audiobook and ebook, then transfers the data to your iPhone for the best possible sync experience.
After processing on your Mac, simply AirDrop the alignment file to your iPhone, or save it to iCloud Drive. Then import it in Voxlight's library under the book's sync settings.
Be the first to know when Voxlight launches.
Join the waitlist for early access and launch-day pricing.
No spam. One email when we launch. Unsubscribe anytime.