# OpenMDict — The Definitive MDict Reader

> Free, open-source MDict reader with multi-window, pop-up lookup, and iCloud sync. (iPhone/iPad app by Han Yin.)

- Source: https://appshunter.io/ios/app/openmdict/id6759032057 (this page in markdown: same URL + `.md`)
- Developer: [Han Yin](https://appshunter.io/developer/1864030563)
- Category: Reference, Education
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 83 MB
- Languages: Korean, German (Germany), Russian, European Spanish, Arabic, American English, Ukrainian, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan) and 3 more
- Released: 2026-04-08
- Data updated: 2026-08-15
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/openmdict/id6759032057/reviews.md

## What is OpenMDict?

OpenMDict is a free, open-source MDict (.mdx/.mdd) dictionary reader for iPhone and iPad.

► THREE LAYOUT MODES & MULTI-WINDOW ON iPadOS
- View definitions from multiple dictionaries simultaneously in Columns, Grid, or List layout — compare and cross-reference at a glance.
- Desktop-class productivity with multiple windows and 30+ keyboard shortcuts.

► POP-UP LOOKUP & JUMP SEARCH
- Look up words from any app via the Action Extension pop-up. 
- Keep jump-searching unfamiliar terms within definitions until every word is clear.

► iCLOUD SYNC & UNLIMITED GROUPS
- Dictionaries, bookmarks, history, and lookup counts sync across all your devices
- Import unlimited dictionaries, create unlimited groups, no subscriptions, no ads, no paid tiers.

► PRESET DICTS INCLUDED & DARK ENHANCEMENTS
- Choose from 65 curated open-source dictionaries (WordNet, JMdict, CC-CEDICT, and more) — download and start using immediately.
- Enhance third-party dictionaries' readability in dark mode, with 7 levels of adjustable brightness per dictionary.

MORE FEATURES
• Full MDict format support: V1 (LZO), V2 (zlib), MDD resources, obfuscated dictionaries
• Lemma-aware search — finds base forms and inflected variants automatically
• Siri Shortcuts, Spotlight search, Quick Actions, Share Extension, Drag & Drop
• 13 languages: English, 简体中文, 繁體中文, 日本語, 한국어, Español, Deutsch, Français, Português (BR), Русский, Українська, العربية, हिन्दी

## Key features

- Multiple layout modes (Columns, Grid, List)
- Pop-up lookup via Action Extension
- Jump search within definitions
- iCloud sync for dictionaries and history
- Import unlimited dictionaries and create groups
- Includes 65+ curated open-source dictionaries
- Dark mode enhancements with adjustable brightness

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/openmdict/id6759032057/reviews.md

### 5/5 — VERY GOOD

*2026-07-28*

NOICE

### 5/5 — A dict you should have absolutely

*2026-04-13*

very useful

## Frequently asked questions about OpenMDict

### What dictionaries are included with OpenMDict?

OpenMDict comes with over 65 curated open-source dictionaries, including popular ones like WordNet, JMdict, and CC-CEDICT. You can also import unlimited third-party dictionaries in MDict format.

### Can I use OpenMDict on multiple devices?

Yes, OpenMDict supports iCloud sync, which allows your dictionaries, bookmarks, history, and lookup counts to be synchronized across all your Apple devices, including iPhone and iPad.

### Does OpenMDict have ads?

No, OpenMDict is completely ad-free. It is a free, open-source application with no advertisements, subscriptions, or paid tiers.

### How does OpenMDict handle dark mode?

OpenMDict offers dark mode enhancements to improve readability. You can adjust the brightness for third-party dictionaries across 7 levels, ensuring a comfortable viewing experience in low light.

### What are the layout options in OpenMDict?

OpenMDict provides three distinct layout modes: Columns, Grid, and List. This allows you to view definitions from multiple dictionaries simultaneously for easy comparison and cross-referencing.

### Can I look up words from other apps using OpenMDict?

Yes, OpenMDict features a convenient Action Extension that enables pop-up lookup from any app. This allows you to quickly find definitions without leaving your current application.

### Is OpenMDict suitable for offline use?

Yes, once dictionaries are imported, OpenMDict functions as an offline dictionary reader. You can access definitions and use features like jump search without an internet connection.

### What is the update frequency for OpenMDict?

The app was last updated on June 23, 2026, indicating active development. As an open-source project, updates are driven by community contributions and developer releases.

## Version history (last 5 releases)

### 1.0.0 — 2026-07-01

1. Supported adding custom fonts to each dictionary with iCloud syncing.
2. Fixed a few CSS/JS loading bugs.

### 0.3.4 — 2026-06-23

1. Fixed the GPU acceleration bug during article content indexing
2. Minor performance optimizations on Action Extension UI

### 0.3.3 — 2026-06-13

- Added semantic searching and article content searching.
- Greatly improved performance on iPhone.
- Fixed several known bugs.

### 0.2.1 — 2026-05-24

1. AI Coach's UI polish
2. Fixed the bug of custom Zoom not correctly initializing

### 0.2 — 2026-05-21

1. Added local AI coach
2. Performance improvements
3. Bug fixes

## More apps by Han Yin

- [Mech Keeb Switches](https://appshunter.io/ios/app/mech-keeb-switches/id6756983572)

All apps by Han Yin: https://appshunter.io/developer/1864030563

## Related topics

[mdict](https://appshunter.io/ios/topics/mdict)

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*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 2026-08-15.*