# OneOpen vs Photo Margin

OneOpen and Photo Margin are too close to call on the numbers: across 7 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. OneOpen sells 2 in-app purchases, starting at $0.99 per year and Photo Margin sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

OneOpen ships an update every 4 days, Photo Margin every 2 days. Both last shipped on November 6, 2026.

## The numbers

| Metric | OneOpen | Photo Margin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/photo-margin/id6812939517/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Monetization | Freemium | Freemium |
| Size | 76 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Freedom Dimension (shenzhen) Technology Co., Ltd](https://appshunter.io/developer/6776064465) | [博 刘](https://appshunter.io/developer/6812811096) |

## What reviewers say

### OneOpen

[App page](https://appshunter.io/ios/app/oneopen-file-viewer/id6792251542)

View a wide range of file types, including documents, web pages, CAD drawings, and 3D models, directly on your iPhone and iPad. Easily open and manage archives, EPUBs, emails, and certificates. Offers basic viewing for free with advanced features available through a subscription.

**Highlights:** Multi-format file viewing, HTML and Markdown preview, CAD and 3D model rotation, Archive browsing and extraction, EPUB reader, Certificate inspection, File information display

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Access Annual | $0.99 | per year |
| Advanced Access Lifetime | Free | one-time |


### Photo Margin

[App page](https://appshunter.io/ios/app/photo-margin/id6812939517)

Organize your iPhone's photo library locally. Review and manage photos and videos in batches, separating new arrivals from older items. Protect, delete, or keep media with intuitive swipe gestures, all processed on your device.

**Highlights:** On-device processing, Batch duplicate and similar photo comparison, Swipe gestures for protect/delete/keep, Sort large videos by file size, Pause and resume analysis, Local-first organization

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Photo Margin Pro Monthly | $1.99 | per month |
| Photo Margin Pro Yearly | $4.99 | per year |
| Photo Margin Pro Quarterly | $4.99 | per 3 months |
| Photo Margin Pro Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is OneOpen free?

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

### Is Photo Margin free?

Photo Margin is free to download, with in-app purchases available.

### Do OneOpen or Photo Margin have ads?

Neither OneOpen nor Photo Margin shows ads.

### Which is updated more often, OneOpen or Photo Margin?

OneOpen ships an update every 4 days, and Photo Margin every 2 days. Most recently, OneOpen was updated on November 6, 2026 and Photo Margin on November 6, 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.*