# MDX Reader vs OpenMDict

The clearest difference is in-app purchases: OpenMDict at none against MDX Reader's 1. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. MDX Reader sells 1 one-off in-app purchase. OpenMDict asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for MDX Reader against 5.0 for OpenMDict. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

MDX Reader ships an update every 11 days, OpenMDict every 10 days. The most recent releases landed on September 20, 2026 and August 15, 2026 respectively.

## The numbers

| Metric | MDX Reader | OpenMDict |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/mdx-readerpersonal-dictionary/id6756669176/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/openmdict/id6759032057/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 10 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 9 MB | 83 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yulei Duan](https://appshunter.io/developer/1860295257) | [Han Yin](https://appshunter.io/developer/1864030563) |

## What reviewers say

### MDX Reader

[App page](https://appshunter.io/ios/app/mdx-readerpersonal-dictionary/id6756669176)

This app allows you to build and manage your personal dictionary using MDX/MDD files. It offers powerful offline search, smart favorites, and customizable appearance for a personalized reference experience.

**Highlights:** Unlimited dictionary management, Fast full-text search, Smart favorites for saved words, Customizable appearance, Offline functionality, Cross-dictionary search

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MDX Premium (Lifetime) | $3.99 | one-time |


### OpenMDict

[App page](https://appshunter.io/ios/app/openmdict/id6759032057)

This free, open-source dictionary reader allows you to view definitions from multiple dictionaries simultaneously. It offers pop-up lookup from any app and syncs your dictionaries, bookmarks, and history across devices via iCloud. Includes over 65 curated dictionaries to get you started.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is MDX Reader free?

MDX Reader is free to download, with in-app purchases available.

### Is OpenMDict free?

OpenMDict is free to download, with no in-app purchases.

### Which has better reviews, MDX Reader or OpenMDict?

MDX Reader and OpenMDict are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do MDX Reader or OpenMDict have ads?

Neither MDX Reader nor OpenMDict shows ads.

### Which is updated more often, MDX Reader or OpenMDict?

MDX Reader ships an update every 11 days, and OpenMDict every 10 days. Most recently, MDX Reader was updated on September 20, 2026 and OpenMDict on August 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*