# OnePreview vs Quick Markdown Viewer

OnePreview and Quick Markdown Viewer both sit at 5.0 stars, but that hides the real split: 100% of OnePreview's written reviews are positive against 50% of Quick Markdown Viewer's. OnePreview also leads on update cadence (weekly vs every 3 weeks). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for OnePreview against 5.0 for Quick Markdown Viewer. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 100% of OnePreview's written reviews are positive against 50% of Quick Markdown Viewer's.

OnePreview ships an update weekly, Quick Markdown Viewer every 3 weeks. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | OnePreview | Quick Markdown Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/onepreview-file-viewer/id6760284919/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/quick-markdown-viewer/id6761271951/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 9 MB | 29 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [培克 罗](https://appshunter.io/developer/1516557687) | [Sous Chef Studio, Inc.](https://appshunter.io/developer/1768173412) |

## What reviewers say

### OnePreview

[App page](https://appshunter.io/ios/app/onepreview-file-viewer/id6760284919)

This app allows you to preview and interact with various developer file formats, including Markdown, code, databases, and archives, directly on your iPhone and iPad. It offers local processing for speed and privacy, with features like PDF export and structured data inspection.

**Highlights:** Markdown and MDX rendering, JSON, YAML, XML, CSV, TSV, TOML, ENV parsing, SQLite database inspection, Source code and log viewing, ZIP and TAR.GZ archive content preview, Mermaid diagrams and KaTeX math rendering, A4 PDF export for Markdown files

**Features:** Vision Pro support

**In-app purchases:** none


### Quick Markdown Viewer

[App page](https://appshunter.io/ios/app/quick-markdown-viewer/id6761271951)

This app provides a fast, local-first reader for Markdown folders, documentation packets, and media-rich notes across Mac, iPhone, and iPad. It allows opening local files or public GitHub repositories without requiring an account, subscription, or tracking.

**Highlights:** Open local folders and browse Markdown, CSV, TSV files, Open JSON, JSONC, NDJSON, JSONL files, Read JSON-family code blocks within Markdown, Search current or all open documents, Native rendering for Markdown elements and Mermaid diagrams, Open public GitHub repository URLs, macOS Quick Look extension and command-line launcher

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

**In-app purchases:** none


## Frequently asked questions

### Is OnePreview free?

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

### Is Quick Markdown Viewer free?

Quick Markdown Viewer is free to download, with no in-app purchases.

### Which has better reviews, OnePreview or Quick Markdown Viewer?

OnePreview and Quick Markdown Viewer are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do OnePreview or Quick Markdown Viewer have ads?

Neither OnePreview nor Quick Markdown Viewer shows ads.

### Which is updated more often, OnePreview or Quick Markdown Viewer?

OnePreview ships an update weekly, and Quick Markdown Viewer every 3 weeks. Most recently, OnePreview was updated on October 25, 2026 and Quick Markdown Viewer on October 10, 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.*