DuelCodex
Cards, Decks & Duel Tools
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Free
With Ads
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About
DuelCodex is an unofficial companion app for Yu-Gi-Oh! players who want a fast way to browse cards, explore decks, review skills and news, and use practical duel tools from one place.
Features include:
• Searchable card database with detailed card information.
• Deck browsing and deck-building tools.
• Skill reference for supported game formats.
• News and update browsing.
• Duel simulator and practical duel utilities.
• Favorites, local preferences and convenient sharing/export tools.
DuelCodex is an independent, unofficial companion application. Yu-Gi-Oh! names, card artwork and related trademarks belong to their respective owners. DuelCodex is not affiliated with or endorsed by KONAMI.
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What's New in DuelCodex
1.0.3
September 20, 2026
Improved app stability and performance, reduced ad banner layout shifts, added card image caching, enhanced tutorial card previews, added version/build information and an on-device diagnostics viewer, and improved update checking.
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