# OnePreview vs Wivlo

The clearest difference is iOS requirement: Wivlo at 15.1 against OnePreview's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

OnePreview ships an update weekly, Wivlo every 4 days. The most recent releases landed on October 25, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | OnePreview | Wivlo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/onepreview-file-viewer/id6760284919/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Free | — |
| Size | 9 MB | 37 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [培克 罗](https://appshunter.io/developer/1516557687) | [YOHAN KIM](https://appshunter.io/developer/1845523637) |

## 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


### Wivlo

[App page](https://appshunter.io/ios/app/wivlo/id6785180543)

**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 Wivlo free?

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

### Do OnePreview or Wivlo have ads?

Neither OnePreview nor Wivlo shows ads.

### Which is updated more often, OnePreview or Wivlo?

OnePreview ships an update weekly, and Wivlo every 4 days. Most recently, OnePreview was updated on October 25, 2026 and Wivlo on October 19, 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.*