# OnePreview vs DBF Viewer

The clearest difference is in-app purchases: OnePreview at none against DBF Viewer's 2. DBF Viewer's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DBF Viewer sells 2 in-app purchases, starting at $6.99 per 7 days. OnePreview asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | OnePreview | DBF Viewer |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Free | — |
| Size | 9 MB | 23 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Mac | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [培克 罗](https://appshunter.io/developer/1516557687) | [Rush Tools LLC](https://appshunter.io/developer/1896773547) |

## What reviewers say

### OnePreview

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

View and export various file types like Markdown, code, and archives locally on your device. Create PDF reports from Markdown files with advanced rendering options. Inspect data and code without direct editing.

**Highlights:** Preview Markdown with code highlighting, Render Mermaid diagrams and KaTeX formulas, Export Markdown to A4 PDF reports, Inspect SQLite databases and ZIP archives, Supports over 20 file formats, Local-first, no account required

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


### DBF Viewer

[App page](https://appshunter.io/ios/app/dbf-viewer/id6800510170)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $6.99 | per 7 days |
| Annual Access | $69.99 | per year |


## Frequently asked questions

### Is OnePreview free?

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

### Is DBF Viewer free?

DBF Viewer is free to download, with in-app purchases available.

### Do OnePreview or DBF Viewer have ads?

Neither OnePreview nor DBF Viewer shows ads.

### Which is updated more often, OnePreview or DBF Viewer?

OnePreview ships an update weekly, and DBF Viewer weekly. Most recently, OnePreview was updated on November 9, 2026 and DBF Viewer on November 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.*