GemReader

Content rating
Everyone
10+
Downloads
Content rating
Everyone
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About this app

GemReader is a private, offline ebook reader built for interactive books — textbooks, workbooks, study guides, and any EPUB with forms you need to fill in. Unlike most ebook reading apps, GemReader saves your answers automatically.

FORM DATA PERSISTENCE
Most readers ignore form fields. GemReader doesn't. Fill in a workbook exercise, close the book, come back later — your answers are exactly where you left them. Every text field, checkbox, dropdown, and radio button is saved automatically.

ANNOTATIONS
Highlight passages in six colors and attach notes to any highlight — a full note-taking system built into your reading app. Everything persists across reading sessions so your study notes are always where you left them.

ENCRYPTED LIBRARY
Your EPUB files are encrypted at rest using AES-GCM. No plaintext ever touches disk. Your books stay yours.

BUILT FOR OFFLINE USE
No account required. No cloud sync. No tracking. Everything stays on your device.

Perfect for:
• Students working through interactive textbooks and study guides
• Readers who need note-taking and annotation in their ebook reader
• Anyone who values private, offline reading without an account
Updated on
Jun 27, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
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What’s new

What's new in 1.12.0

• New welcome screen with rotating book quotes and trivia
• Change the app language right from Android Settings → Languages
• Highlights and notes are more reliable — fixed color changes erasing notes and stray highlights after copy/search
• Cleaner, more consistent look across collections
• Bug fixes and improvements
Content rating
Everyone
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App support

About the developer
NOHALL JOHAN CHRISTOPHER
chris@nohall.dev
South Korea