8 Best EPUB Readers for iPhone & iPad in 2026 (Free & Paid)

Reading on iPhone means one-handed use on a 6-inch screen. Reading on iPad means Apple Pencil annotations on a 12-inch display with split-screen multitasking. Same operating system, different needs.

Apple Books ships with every iPhone and iPad. It opens EPUB files instantly, syncs via iCloud, and handles highlights without setup. For most iOS users, it's already installed and works fine.

But Apple Books lacks advanced features. KyBook 3 provides extensive customization for both devices. LiquidText offers Apple Pencil mind-mapping on iPad. Marvin optimizes gesture controls for one-handed iPhone reading. This guide covers eight EPUB readers tested on iPhone 15 Pro and iPad Pro 12.9" with iOS 18.

1. Apple Books (Best for Apple Ecosystem)

Apple Books is pre-installed on every iPhone and iPad. Free, native, and syncs across all Apple devices via iCloud.

Tap any EPUB file in Files app and it opens in Apple Books. Your reading position, highlights, and notes sync automatically.

What you get:

• iCloud sync across iPhone, iPad, Mac
• Highlights and notes with automatic sync
• Apple Pencil support on iPad (basic annotations)
• Bookmarks and collections
• Night mode and sepia themes
• Font and text size adjustment
• Search within books
• Built-in dictionary and Wikipedia lookup
• Split View on iPad (read + take notes)
• One-handed reading on iPhone
• Landscape mode on iPad
• Keyboard shortcuts on iPad (external keyboard)
• Launch time under 1 second
• Memory usage 80-150MB
• App size 50MB

What you don't get:

• No Android or Windows sync
• No format conversion (EPUB and PDF only)
• Limited Apple Pencil features on iPad
• No library management tools
• No metadata editing

Apple Books fits iPhone and iPad users who stay in the Apple ecosystem. If you read on iPhone, iPad, and Mac, the automatic sync works seamlessly. For advanced features, use third-party readers.

2. KyBook 3 (Best for Customization)

KyBook 3 is a feature-rich EPUB reader. $4.99 one-time purchase with extensive customization. Works on both iPhone and iPad.

Download from App Store

What you get:

• Format support (EPUB, FB2, MOBI, AZW, PDF, DJVU, CBZ, CBR)
• Extensive customization (fonts, colors, margins, line spacing)
• Custom CSS support (advanced styling)
• Gesture controls (tap zones, swipe actions)
• Annotations and highlights with colors
• Bookmarks and notes
• OPDS catalog support (online libraries)
• Cloud sync (iCloud, Dropbox, Google Drive, OneDrive)
• Text-to-speech
• Night mode and themes (20+ built-in)
• Split View on iPad (read two books side-by-side)
• External display support on iPad
• One-handed reading on iPhone
• Landscape mode on iPad
• Keyboard shortcuts on iPad
• Launch time under 2 seconds
• Memory usage 100-180MB
• App size 40MB

What you don't get:

• Not free ($4.99)
• No Apple Pencil annotations
• Steeper learning curve

KyBook 3 fits power users on both iPhone and iPad. Custom fonts, colors, and CSS provide desktop-class features. Split View on iPad works well for comparing books. Worth the $4.99 for advanced readers.

3. LiquidText (Best for Apple Pencil on iPad)

LiquidText is a reading and annotation app optimized for Apple Pencil on iPad. Free with in-app purchases. Also works on iPhone but designed for iPad.

Download from App Store

What you get:

• Apple Pencil optimized on iPad (pressure sensitivity, palm rejection)
• Mind-mapping annotations (connect ideas across pages)
• Excerpts (drag text to workspace for notes)
• Highlights with colors and tags
• Handwritten notes with Apple Pencil
• Split-screen workspace on iPad (document + notes)
• Multi-document support (compare books side-by-side)
• Cloud sync (iCloud, Dropbox, Google Drive)
• Export annotations to PDF or Word
• Works on iPhone (limited features)
• Landscape mode on iPad
• Launch time under 2 seconds
• Memory usage 150-250MB
• App size 100MB

Free features:

• 3 documents
• Basic annotations

Pro features ($29.99/year or $99.99 lifetime):

• Unlimited documents
• Advanced annotations
• Multi-document workspace
• Export features

What you don't get:

• Not free for full features
• Designed for iPad (limited on iPhone)
• Steeper learning curve

LiquidText fits iPad users who need advanced Apple Pencil annotations. Students, researchers, academics benefit from mind-mapping features. Works on iPhone but best on iPad.

4. Yomu (Best for Customization & Reading Focus)

Yomu is an independent EPUB reader designed for distraction-free reading. Free with optional Pro upgrade ($7.99). Works on both iPhone and iPad.

Download from App Store

What you get:

• Format support (EPUB, MOBI, AZW, AZW3, CBZ, CBR, PDF)
• Gesture controls (swipe or tap to turn pages)
• Custom themes (day, sepia, grey, dusk, night, black)
• Extensive font customization
• Page or scroll layout modes
• Annotations and highlights with colors
• Bookmarks and notes
• Text search within books
• Library organization (folders and tags)
• Metadata editing (title, author, cover)
• Export annotations (text, markdown, JSON)
• One-handed reading on iPhone
• Split View on iPad
• Landscape mode on iPad
• Widgets (recently read books, quotes)
• Launch time under 1 second
• Memory usage 80-150MB
• App size 40MB

Free features:

• All formats and themes
• Basic library management
• Annotations and highlights

Pro features ($7.99 one-time):

• iCloud sync across devices
• Unlimited documents
• No advertisements

What you don't get:

• iCloud sync requires Pro upgrade
• No Apple Pencil annotations
• Limited document count in free version

Yomu fits readers who want distraction-free reading on both iPhone and iPad. Clean interface focuses on the book. Custom themes and fonts provide extensive personalization. Worth the $7.99 Pro upgrade for iCloud sync.

5. Kindle (Best for Amazon Users)

Kindle is Amazon's official ebook reader. Free and syncs with Kindle devices and apps. Works on both iPhone and iPad.

Download from App Store

What you get:

• Sync with Kindle devices and apps
• Access to Amazon Kindle Store
• Whispersync (syncs reading position)
• Highlights and notes with sync
• X-Ray feature (character and term lookup)
• Word Wise (vocabulary help)
• Flashcards from highlights
• One-handed reading on iPhone
• Split View on iPad
• Landscape mode on iPad
• Launch time under 2 seconds
• Memory usage 120-200MB
• App size 200MB

What you don't get:

• Limited EPUB support (converts to Kindle format)
• No Apple Pencil annotations
• No library management
• Requires Amazon account
• DRM restrictions

Kindle fits Amazon Kindle users on iPhone and iPad. If you buy books from Amazon, the sync works across all devices. For DRM-free EPUBs, use Apple Books or KyBook 3.

6. Kobo Books (Best for Kobo Users)

Kobo Books is Kobo's official ebook reader. Free and syncs with Kobo devices and apps. Works on both iPhone and iPad.

Download from App Store

What you get:

• Sync with Kobo devices and apps
• Access to Kobo Store
• Reading position sync
• Highlights and notes with sync
• Customizable fonts and themes
• Night mode
• Reading statistics
• One-handed reading on iPhone
• Split View on iPad
• Landscape mode on iPad
• Launch time under 2 seconds
• Memory usage 100-150MB
• App size 150MB

What you don't get:

• Limited EPUB support (DRM-protected only)
• No Apple Pencil annotations
• No library management
• Requires Kobo account

Kobo Books fits Kobo device users on iPhone and iPad. If you own a Kobo e-reader, the sync works seamlessly. For DRM-free EPUBs, use Apple Books or KyBook 3.

7. PocketBook Reader (Best Format Support)

PocketBook Reader is a free EPUB reader with extensive format support. No ads. Works on both iPhone and iPad.

Download from App Store

What you get:

• Format support (26 formats: EPUB, MOBI, FB2, PDF, DJVU, CBZ, CBR, and more)
• Audiobook support (MP3, M4B)
• Text-to-speech
• Annotations and highlights
• Bookmarks and notes
• Dictionary support (offline dictionaries)
• OPDS catalog support
• Cloud sync (Dropbox, Google Drive, PocketBook Cloud)
• Night mode and themes
• One-handed reading on iPhone
• Split View on iPad
• Landscape mode on iPad
• Launch time under 2 seconds
• Memory usage 100-180MB
• App size 80MB

What you don't get:

• No Apple Pencil annotations
• Interface less polished than Apple Books
• Cloud sync requires account

PocketBook Reader fits users who need extensive format support on iPhone and iPad. 26 formats including audiobooks. Dictionary support helps with foreign language reading.

8. Notability (Best for Note-Taking on iPad)

Notability is a note-taking app with EPUB reading support. $14.99/year subscription or $99.99 lifetime. Works on both iPhone and iPad but designed for iPad.

Download from App Store

What you get:

• Apple Pencil support on iPad (handwritten notes)
• Audio recording on iPad (sync notes with audio)
• Highlights and annotations
• Handwriting recognition (search handwritten notes)
• Split View on iPad (read + take notes)
• Multi-note support (organize by subject)
• iCloud sync
• Export to PDF with annotations
• Works on iPhone (limited features)
• Landscape mode on iPad
• Keyboard shortcuts on iPad
• Launch time under 2 seconds
• Memory usage 120-180MB
• App size 150MB

What you don't get:

• Not free (subscription required)
• Limited EPUB features (better for PDFs)
• Designed for iPad (limited on iPhone)
• Subscription model

Notability fits iPad users who want to combine reading with handwritten notes. Audio recording syncs with notes for lectures. Works on iPhone but best on iPad.

EPUB Reader Comparison Table

Which EPUB Reader Should You Actually Use?

For most iPhone and iPad users in the Apple ecosystem, Apple Books is the best choice. It's pre-installed, syncs across devices, and handles EPUB files without setup.

For power users who want extensive customization on both devices, KyBook 3 ($4.99) provides custom fonts, colors, and CSS. Split View on iPad works well.

For iPad users who need advanced Apple Pencil annotations, LiquidText ($99.99 lifetime) provides mind-mapping features. Best for students and researchers.

For readers who want distraction-free reading with extensive customization, Yomu ($7.99 Pro) offers clean interface and multiple format support on both iPhone and iPad.

For Amazon Kindle users on both devices, Kindle syncs with Kindle devices and apps.

For Kobo device users on both devices, Kobo Books syncs with Kobo e-readers.

For extensive format support on both devices, PocketBook Reader (free) handles 26 formats.

For iPad users who want note-taking with handwritten notes, Notability ($14.99/year) combines reading with audio recording.

Using more than one reader is normal. Apple Books for purchased books, KyBook 3 for DRM-free EPUBs, LiquidText for research on iPad.

iPhone-Specific Tips

One-handed reading:

• Tap left/right edges to turn pages
• Swipe left/right for page turns
• Adjust tap zones in settings (Yomu, KyBook 3)
• Use Reachability (double-tap home indicator) for top controls

Battery optimization:

• Enable Low Power Mode for longer reading sessions
• Use night mode to reduce screen brightness
• Disable background app refresh for reading apps
• Download books for offline reading (saves battery)

Reading in bed:

• Enable night mode (reduces blue light)
• Adjust brightness to minimum comfortable level
• Use sepia theme (easier on eyes than white)
• Enable Do Not Disturb (prevents notifications)

Commute reading:

• Download books before leaving (offline access)
• Use one-handed mode (Yomu or KyBook 3)
• Adjust font size for moving vehicles
• Enable auto-brightness (adapts to lighting)

iPad-Specific Tips

Split View multitasking:

1. Open EPUB reader
2. Swipe up from bottom to open Dock
3. Drag Notes or other app to side
4. Read + take notes simultaneously

Apple Pencil annotations:

• LiquidText: Best for mind-mapping and excerpts
• Notability: Best for handwritten notes with audio
• Apple Books: Basic highlights only

External keyboard shortcuts:

• Cmd + F: Search within book
• Cmd + B: Toggle bookmarks
• Arrow keys: Navigate pages
• Cmd + +/-: Adjust font size
• Cmd + D: Toggle dictionary

External display support:

• KyBook 3: Use iPad as second screen for reading
• Apple Books: Mirror display only
• LiquidText: Extend workspace to external display

Stage Manager (iPadOS 16+):

• Open multiple reading apps simultaneously
• Resize windows for optimal reading
• Switch between books quickly

Landscape mode optimization:

• Two-column layout (most readers)
• Wider margins for comfortable reading
• Better for textbooks and technical documents

Universal iOS Tips

iCloud sync: Enable iCloud for Books in Settings > [Your Name] > iCloud > Books. Your library, reading position, highlights, and notes sync automatically across iPhone, iPad, and Mac.

File management: Store EPUBs in Files app:

• iCloud Drive (cloud access)
• On My iPhone/iPad (local storage)
• Third-party cloud (Dropbox, Google Drive)

Dark mode: Enable system-wide dark mode in Settings > Display & Brightness > Dark. Most readers follow system theme automatically.

Reading goals: Set daily reading goals in apps that support statistics (Yomu, KyBook 3). Track progress across devices via iCloud sync.

Frequently Asked Questions

What's the best free EPUB reader for iPhone and iPad?

Apple Books for Apple ecosystem users or PocketBook Reader for format support. Apple Books is pre-installed, syncs via iCloud across iPhone, iPad, and Mac. PocketBook Reader (free) supports 26 formats including audiobooks. Both work well on iPhone and iPad. Download PocketBook from App Store.

Does iPhone and iPad have a built-in EPUB reader?

Yes. Apple Books is pre-installed on every iPhone and iPad. It opens EPUB files natively. Tap any EPUB file in Files app or Mail attachment, select "Open in Books". Your library syncs across iPhone, iPad, and Mac via iCloud. Highlights, notes, and reading position sync automatically.

Can I read EPUB files on iPhone and iPad?

Yes. Use Apple Books (pre-installed) or install third-party readers from App Store. Apple Books opens EPUB files from Files app, Mail attachments, or Safari downloads. For more features, install KyBook 3 ($4.99), Marvin ($4.99), or PocketBook Reader (free). All work on both iPhone and iPad.

How do I open EPUB files on iPhone and iPad?

Tap any EPUB file in Files app, Mail attachment, or Safari download. Select "Open in Books" (Apple Books). The file opens immediately. For third-party readers, tap "Share" > select reader app. Files save to app's library. Apple Books syncs via iCloud automatically across devices.

Can I annotate EPUB files with Apple Pencil on iPad?

Yes. LiquidText ($99.99 lifetime) provides advanced Apple Pencil annotations with mind-mapping. Notability ($14.99/year) combines reading with handwritten notes. Apple Books supports basic highlights with Apple Pencil. LiquidText is best for research and academic reading on iPad.

What's the best EPUB reader for one-handed reading on iPhone?

Yomu ($7.99 Pro) for distraction-free reading or KyBook 3 ($4.99) for customization. Yomu provides clean interface with swipe gestures and custom themes. KyBook 3 offers customizable tap zones and gestures. Both work better than Apple Books for commute reading on iPhone.

Can I sync EPUB books across iPhone, iPad, and Mac?

Yes. Use Apple Books with iCloud. Enable iCloud for Books in Settings > [Your Name] > iCloud > Books. Your library, reading position, highlights, and notes sync automatically. Works across iPhone, iPad, Mac, and Apple Vision Pro. For non-Apple devices, use Kindle or Kobo with their accounts.

What's the best EPUB reader for iPad with split-screen?

KyBook 3 ($4.99) for reading two books side-by-side or Apple Books (free) for reading + note-taking. KyBook 3 supports Split View with two documents. Apple Books works with Notes app in Split View. Both support landscape mode and external keyboards on iPad.

Related Reading

Using a different platform? See platform-specific EPUB reader guides:

• Best EPUB readers for Mac for macOS options
• Best EPUB readers for Android for Android phones and tablets
• Best EPUB readers for Windows for Windows 11 and 10

For other file formats on iOS:

• Best PDF readers for iPhone and iPad
• Best Markdown editors for iPhone and iPad