BookPlayer vs readHD

A wonderful player for your M4B/M4A/MP3/FLAC based audiobooks. Import – Using AirDrop from your Mac or iOS device – From Files and other apps on your device – Via File Sharing in iTunes on your Mac or PC – From your own AudibookShelf or Jellyfin server – Zip files with your folders and books Manage – Maintain and see progress of your books – Mark books as finished – Drag & Drop to sort your library – Create playlists – Automatically play items in turn – Play the first unfinished file by tapping on the playlist artwork – Move files to playlists from the library or import them directly – Edit your book details (title, author, artwork) – Connect to your Hardcover.app account, and track your library progress Listen – Control audio playback from the lock screen, control center or from the companion app on the Apple Watch – Play and navigate books with Chapters – Jump to start of the current book – Change playback speed – Smart rewind – Volume Boost – Support for remote events from headset buttons and the lock screen – Sleep timer with adjustable duration – CarPlay support – VoiceOver support – Dolby Atmos support – Dark mode for night owls – Continue listening across your devices with Cloud Sync, including stand alone playback on your Apple Watch Supported M4B/M4A/MP3 BookPlayer is licensed under GNU General Public License v3.0. The source code and a list of all its contributors can be found on the GitHub page of this project at www.github.com/TortugaPower/BookPlayer You can see our Privacy policy and terms of use in the following links: – https://github.com/TortugaPower/BookPlayer/blob/main/PRIVACY_POLICY.md – https://github.com/TortugaPower/BookPlayer/blob/main/TERMS_CONDITIONS.md For help and ways to contribute to the project see the support section in the Settings screen of BookPlayer or visit www.bookplayer.app If you enjoy BookPlayer, we would be glad if you consider writing a review.

COGNITIVE READING TOOLS & FEATURES • BOLD LETTER FIXATION ANCHORING Automatically bold the opening letters of every word to establish high-contrast visual anchors. Your eyes lock onto the word root while your brain completes the meaning, reducing tracking fatigue and stopping involuntary line backtracking. • SPOTLIGHT READING RULER Isolate your line-by-line focus. The spotlight ruler softly dims surrounding text while keeping your active line sharp and illuminated, preventing peripheral distractions and accidental line skips. • COLOR GUIDE ZEBRA TINTING Alternate subtle background row tints to eliminate visual crowding, reduce pattern glare, and keep your gaze straight across wide displays. • PAPER-LIKE EYE COMFORT THEMES Replicate the glare-free feel of dedicated digital e-readers with our Paper-Like Grayscale theme. Also includes Warm Cream, Charcoal, Vintage Sepia, and Calm Green palettes designed to reduce blue-light eye strain. • RSVP PACED READING (UP TO 300 WPM) Stream text word-by-word at a comfortable, steady pace using Rapid Serial Visual Presentation. Eliminate eye movements entirely—ideal for rapid study reviews and low-fatigue reading. • SYNCHRONIZED AUDIO & TEXT (GHOST MODE) Listen along via natural text-to-speech while words highlight in real time. Switch on Ghost Mode to fade out inactive text behind the audio pacer, channeling complete visual focus directly onto the active sentence. • BRING-YOUR-OWN-KEY (BYOK) PRIVATE AI Connect your personal OpenAI or Anthropic API key to generate private chapter breakdowns, simplify dense academic passages, and create study flashcards directly inside your book. • 1,500+ BUILT-IN CLASSIC BOOKS Get instant, offline access to a curated library of over 1,500 public-domain literary classics across 19 genres—including Sci-Fi, Mystery, Philosophy, Romance, and Adventure. • IMPORT YOUR OWN EPUB & PDF FILES Import DRM-free EPUB books, research papers, lecture notes, and work documents. All reading progress, files, notes, and highlights remain stored 100% locally and privately on your device. ================================== TRANSPARENT MONETIZATION • FREE TIER: Enjoy complete access to the 1,500+ classic book library, standard fixation bolding, and basic document reading. • PREMIUM PASS (Monthly, 3-Month, Annual, or Lifetime): Unlock unlimited EPUB & PDF imports, the adjustable Spotlight Reading Ruler, Ghost Mode audio-sync, and BYOK AI study tools. Take control of dense text, retain more of what you read, and finish every book with readHD. Disclaimer: readHD is an assistive educational and productivity utility designed to aid reading comfort and focus. It is not a medical device or a clinical treatment for learning disabilities.