Marble: EPUB & PDF Reader
OPDS, Calibre, CBZ & Stats
Free · Designed for iPad. Not verified for macOS.
Meet the spiritual successor to Marvin 3. Unlimited free library, OPDS catalogs, Calibre discovery, deep typography, reading stats. One-time Pro—no subscription.
Marble is the ebook reader for people who love books, not subscriptions. It’s what Marvin 3 would have become if it were still maintained — beautiful, powerful, and built for power readers.
**Formats that matter. One price. Zero subscriptions.**
Read EPUB, PDF, TXT, DOCX, and CBZ — all in one app. No book limits. No forced cloud. No account required. Just you and your library.
**For OPDS & Calibre Users**
Browse and download from any OPDS 1.2 or 2.0 catalog — Standard Ebooks, Project Gutenberg, Internet Archive, ManyBooks, or your own server. Automatic Bonjour discovery for Calibre Content Servers. Download books directly to your library with one tap.
**Typography That Respects the Page**
Adjust size, font family, line height, margins, and alignment. Switch among carefully crafted themes including Paper, Sepia, Dark, and Pitch. Pro unlocks advanced themes like Leather and Slate.
**Annotations That Travel With You**
Highlight in 10 colors. Add notes. Browse annotations by book. Export to Markdown or CSV with Marble Pro — perfect for Obsidian, Notion, or your own archive.
**Reading Statistics (Pro)**
Track reading time, pages turned, daily streaks, and a year heatmap. All stats stay private on your device unless you choose to sync.
**Comics & CBZ**
Read CBZ comics with pinch zoom and edge-tap page turns. ZIP-based archives open cleanly; true RAR CBR support is coming soon.
**Cloud Storage Import**
Connect Google Drive or Dropbox to browse and import books. Use the Files app for iCloud Drive and local folders.
**iCloud Sync (Pro)**
Keep reading positions and annotations in sync across iPhone and iPad via CloudKit. Book files stay on each device — local-first by design.
**No Account. No Tracking. No Ads.**
Marble is local-first. Your reading data stays on your device unless you choose to sync. No analytics SDKs. No profile building.
**Marble is Free + One-Time Pro**
Use all core local features free, forever. Upgrade to Marble Pro ($4.99 one-time) for iCloud sync, annotation export, reading stats, and advanced themes. No subscription required for Pro.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Tung Ngo, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tung Ngo
- Size
- 25.6 MB
- Category
- Reference
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Tung Ngo