OSS-Dict
Offline Dictionary Reader
A free and open-source offline dictionary reader for Android. Fork of Aard 2 with Material Design 3, smart lookup, math rendering, bookmarks and more. No internet required.
Offline Dictionary Reader
A free and open-source offline dictionary reader for Android. Fork of Aard 2 with Material Design 3, smart lookup, math rendering, bookmarks and more. No internet required.
What's inside
OSS-Dict packs a full suite of reading and lookup tools into a beautifully crafted, completely offline experience.
Search is punctuation, diacritics and case insensitive — find what you mean, not just what you type.
Save articles and revisit your reading history. Filter and sort by time or title, with easy bulk removal.
Load multiple dictionaries, reorder them, toggle them on/off or remove them — all without touching files.
Apply built-in or your own CSS stylesheets to personalize article appearance exactly to your taste.
Mathematical formulas rendered via MathJax — scalable, styleable and crisp on every screen.
Tap the app logo to discover a random entry. Optionally limit random lookups to your favourite dictionaries.
Use hardware volume keys to scroll articles or cycle through tabs — hands-free reading made easy.
Immerse yourself in content with fullscreen article viewing. Pull down from the top edge to exit.
Copied text (excluding URLs, emails and phone numbers) is automatically pasted into the search field.
Long-tap any link in an article to share it directly — perfect for Wikipedia and Wiktionary links.
See it in action
Built with Material Design 3, OSS-Dict is easy to navigate and beautiful on any Android device.
Get dictionaries
OSS-Dict reads .slob dictionary files. Add your own files using Android's file picker — the app never downloads dictionaries itself. Here are the best places to find them:
Free and open-source. No ads. No tracking. Works on Android 7+.