# OnePreview vs Quick Markdown Viewer

OnePreview and Quick Markdown Viewer are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

OnePreview ships an update every 2 weeks, Quick Markdown Viewer every 3 weeks. The most recent releases landed on September 11, 2026 and June 26, 2026 respectively.

## The numbers

| Metric | OnePreview | Quick Markdown Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quick-markdown-viewer/id6761271951/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | — | Free |
| Size | 8 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/id6760284919)

**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.

### 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 every 2 weeks, and Quick Markdown Viewer every 3 weeks. Most recently, OnePreview was updated on September 11, 2026 and Quick Markdown Viewer on June 26, 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.*