Gruno is a powerful comic, manga, and book reader built for people who love organizing and reading their collection their way. Read offline, connect to OPDS catalogs, and keep your entire library in one clean place.

Whether you read manga, comics, or PDFs, Gruno gives you control over your library and your reading experience.

📚 What you can do with Gruno

📖 Read your way

Smooth horizontal or vertical reading

Right-to-left mode for manga

Stable reader for long sessions

Automatic reading progress

🗂 Organize your library

Manage large comic and manga collections easily

Sort by name or date

Multiple view modes: small grid, large grid, or detailed list

Fast thumbnail and list loading

🌐 OPDS support (experimental)

Connect to OPDS 1.2 and 2.0 servers

Browse online catalogs

Import content into your personal library

📦 Broad format support

CBR, CBZ, CB7

PDF

Image formats including WebP

🎨 Clean and customizable interface

Light and Dark themes

Consistent design focused on reading

⚡ Built for performance

Fast library navigation

Optimized memory usage

Stable even with large collections

⭐ Premium

Unlock advanced features with a subscription, or make a one-time purchase to unlock the current main version permanently.

🔒 Privacy

Gruno needs access to your device files to scan and open comics and PDFs stored locally.
Your files are never uploaded to external servers.

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