# MDX Reader:Personal Dictionary — Build Your Personal Dictionary > Offline dictionary reader supporting MDX/MDD files with advanced search and customization. (iPhone/iPad app by Yulei Duan.) - Source: https://appshunter.io/ios/app/mdx-readerpersonal-dictionary/id6756669176 (this page in markdown: same URL + `.md`) - Developer: [Yulei Duan](https://appshunter.io/developer/1860295257) - Category: Reference, Education - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 16.0 · 9 MB - Languages: American English, French (France), German (Germany), Japanese, Korean, Russian, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan) - Released: 2025-12-17 - Data updated: 2026-08-23 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/mdx-readerpersonal-dictionary/id6756669176/reviews.md ## What is MDX Reader? MDX Reader is a powerful offline dictionary reading application that supports MDX/MDD format dictionary files. Whether you're learning a language, doing academic research, or need quick reference, MDX Reader is your ideal choice. Core Features • Unlimited Dictionaries Add and manage multiple MDX dictionaries simultaneously, supporting parallel queries across dictionaries for comprehensive information retrieval. • Powerful Search Engine Lightning-fast full-text search with instant results. Supports fuzzy matching and comprehensive indexing. • Smart Favorites One-tap to save important words, organized by dictionary for easy review and management. • Custom Appearance Personalize font family, size, weight, line spacing, padding, and background color. Create your ideal reading experience. • Offline First All dictionary data and search functionality work completely offline. No internet connection required, protecting your privacy. • Cross-Dictionary Search Simultaneously search multiple dictionaries and instantly view definitions from different sources. • Search History Automatically record search history for quick access to previously viewed content. Supported Formats • MDX (MDict Dictionary) Mainstream dictionary format with wide compatibility • MDD (MDict Resource) Supports images, audio, and multimedia resources Premium Features Unlock all features with a one-time purchase: - Unlimited dictionary additions (free version limited to 1) - Unlimited daily searches (free version limited to 20) - Custom appearance settings - Background color selection - Advanced font settings Free Trial New users get a 7-day free trial of all premium features. Experience the full functionality before deciding to purchase. Privacy First - No data collection - No user tracking - No third-party analytics - All data stored locally on device - Complete offline functionality Perfect For - Language learners: Support for multiple language dictionaries - Academic researchers: Professional terminology dictionaries - Translators: Quick reference and terminology lookup - Students: Comprehensive learning resource - Knowledge workers: Personal knowledge base Easy to Use 1. Add Dictionary: Import your MDX/MDD dictionary files 2. Search Words: Enter search terms for instant results 3. Manage Favorites: Save important content for easy review Download MDX Reader now and start your knowledge exploration journey! ## Key features - Unlimited dictionary management - Fast full-text search - Smart favorites for saved words - Customizable appearance - Offline functionality - Cross-dictionary search ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | MDX Premium (Lifetime) | $3.99 | one-time | ## Frequently asked questions about MDX Reader ### What is MDX Reader? MDX Reader is an offline dictionary application that supports MDX/MDD format dictionary files. It allows users to build and manage their personal dictionaries for quick reference and learning. ### Can I use MDX Reader without an internet connection? Yes, MDX Reader is designed for offline use. All dictionary data and search functionality work completely offline, ensuring your privacy and accessibility. ### How many dictionaries can I add to MDX Reader? The free version of MDX Reader is limited to adding one dictionary. With a one-time purchase, you can unlock unlimited dictionary additions. ### Does MDX Reader have ads? No, MDX Reader does not contain advertisements. It prioritizes a clean and uninterrupted user experience. ### What are the premium features of MDX Reader? Premium features include unlimited dictionary additions, unlimited daily searches, custom appearance settings, background color selection, and advanced font settings. These are available through a one-time purchase. ### Is there a free trial for MDX Reader's premium features? Yes, new users receive a 7-day free trial of all premium features. This allows you to experience the full functionality before making a purchase. ### What dictionary file formats does MDX Reader support? MDX Reader primarily supports the MDX (MDict Dictionary) format and MDD (MDict Resource) files, which can include images, audio, and multimedia resources. ### How often is MDX Reader updated? MDX Reader was last updated on January 11, 2026, indicating active development and support for the application. ## Version history (last 5 releases) ### 1.4 — 2026-06-24 This update brings a cleaner reading experience and easier dictionary management: · Refined default rendering for clearer text and hierarchy (no custom CSS needed) · File Sharing support: import MDX/MDD dictionaries directly via Finder/iTunes, auto-detected · Fixed custom fonts not being applied · Unlimited lookups; free users can add up to 3 dictionaries · New bottom tab bar navigation · Improved onboarding and fixed invisible text in dark mode · Fixed unresponsive Language & Theme settings Thanks for using the app — feedback welcome! This update brings a cleaner reading experience and easier dictionary management: · Refined default rendering for clearer text and hierarchy (no custom CSS needed) · File Sharing support: import MDX/MDD dictionaries directly via Finder/iTunes, auto-detected · Fixed custom fonts not being applied · Unlimited lookups; free users can add up to 3 dictionaries · New bottom tab bar navigation · Improved onboarding and fixed invisible text in dark mode · Fixed unresponsive Language & Theme settings Thanks for using the app — feedback welcome! ### 1.3 — 2026-01-11 Support to scan file folder ### 1.2 — 2025-12-30 Performance 70% faster dictionary searches with concurrent processing Improved memory efficiency New Features Selected dictionaries automatically sort to the front Newly added dictionaries are auto-selected Quick navigation buttons on home screen Improvements Full localization support for all UI elements Smooth animations for dictionary selection Enhanced app stability and bug fixes ### 1.1 — 2025-12-21 Resource Management Enhanced • Support multiple MDD resource files • Support multiple custom CSS/JS files • Intuitive resource status indicators • One-tap clear all resources UI Improvements • Brand new dictionary card design • Clearer resource file identification • Optimized button layout and spacing • Enhanced dark mode adaptation Enhancements • Smart auto-select styling mode • Theme sync: word page follows system theme • Improved zoom navigation flow • Better resource loading performance Bug Fixes • Fixed MDD resource loading issues • Improved audio playback compatibility • Fixed UI refresh delays ### 1.0 — 2025-12-17 No release notes. ## Apps similar to MDX Reader | App | Rating | Price | Category | | --- | --- | --- | --- | | [MDict](https://appshunter.io/ios/app/mdict/id389083586) | 4.0 (29) | Free | Reference | | [FlashcardDict](https://appshunter.io/ios/app/flashcarddict/id6762287923) | 5.0 (1) | Free | Reference | | [OpenMDict](https://appshunter.io/ios/app/openmdict/id6759032057) | 5.0 (2) | Free | Reference | | [EBPocket Professional](https://appshunter.io/ios/app/ebpocket-professional/id317039933) | 4.2 (9) | $4.99 | Reference | | [Dicty](https://appshunter.io/ios/app/dicty/id969045273) | 4.3 (31) | Free | Reference | | [1secDic: MDict/EPWING Reader](https://appshunter.io/ios/app/1secdic-mdictepwing-reader/id6759234827) | — | Free | Reference | ## More apps by Yulei Duan - [FlipFocus – Flip Clock Timer](https://appshunter.io/ios/app/flipfocus-flip-clock-timer/id6756367564) - [SG BusNow: Live Bus Arrival](https://appshunter.io/ios/app/sg-busnow-live-bus-arrival/id6756424161) - [EchoTalk: AI Live Interpreter](https://appshunter.io/ios/app/echotalk-ai-live-interpreter/id6756935663) - [Zendone: Minimalist To Do List](https://appshunter.io/ios/app/zendone-minimalist-to-do-list/id6757175262) - [Cubby Calendar](https://appshunter.io/ios/app/cubby-calendar/id6757321367) All apps by Yulei Duan: https://appshunter.io/developer/1860295257 ## Related topics [1secdic](https://appshunter.io/ios/topics/1secdic) · [mdict](https://appshunter.io/ios/topics/mdict) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*