# USB Disk SE, File Manager vs Olfactree SION ERP

The clearest difference is in-app purchases: Olfactree SION ERP at none against USB Disk SE, File Manager's 4. Olfactree SION ERP also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price and device support there is nothing between them.

Both are free to download. USB Disk SE, File Manager sells 4 in-app purchases, starting at $1.99 per 7 days. Olfactree SION ERP asks for nothing beyond the download.

USB Disk SE, File Manager ships an update every 2 months, Olfactree SION ERP every 3 weeks. The most recent releases landed on November 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | USB Disk SE, File Manager | Olfactree SION ERP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (855 ratings)](https://appshunter.io/ios/app/usb-disk-se-file-manager/id370531520/reviews)** | — |
| Number of ratings | **855** | — |
| Positive reviews | 76.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 224 MB | 55 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | **iPhone, iPad, Apple TV, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Imesart S.a.r.l.](https://appshunter.io/developer/290160983) | [Aayush Tekriwal](https://appshunter.io/developer/1766291418) |

## What reviewers say

### USB Disk SE, File Manager

[App page](https://appshunter.io/ios/app/usb-disk-se-file-manager/id370531520)

This app allows you to store, view, and manage documents on your iPhone and iPad. It offers a built-in viewer, easy file transfers via iTunes, and integration with cloud storage services. Enjoy a simple interface with powerful features for organizing and accessing your files.

**Highlights:** Cloud storage integration (Dropbox, Google Drive, OneDrive, Box), Store and view files on iPhone/iPod, Intuitive swipe navigation, File preview with thumbnails, Copy, paste, cut, delete, and create files, Email documents, USB file transfers

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| USB Disk Pro Weekly | $1.99 | per 7 days |
| USB Disk Pro Monthly | $4.99 | per month |
| USB Disk Pro Half Yearly | $19.99 | per 6 months |
| USB Disk Pro Yearly | $39.99 | per year |

**What reviewers like**

- 💾 Easy file storage and access
- 📁 Convenient document management
- 🔍 Supports various file formats
- ⚙️ Useful for transferring files between devices

**What reviewers complain about**

- 🐛 Crashes and freezes reported
- 🔒 Limited file access and editing capabilities
- 💰 Paywall for some features
- 🔍 Difficulty organizing files

**Reported bugs**

- Crashes when opening certain file types
- Syncing issues with iTunes
- Compatibility problems with newer iOS versions

**Requested features**

- Ability to edit documents within the app
- Improved file management with folders and renaming
- Support for more file types
- Wireless file transfer without iTunes


### Olfactree SION ERP

[App page](https://appshunter.io/ios/app/olfactree-sion-erp/id6792993505)

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

**In-app purchases:** none


## Frequently asked questions

### Is USB Disk SE, File Manager free?

USB Disk SE, File Manager is free to download, with in-app purchases available.

### Is Olfactree SION ERP free?

Olfactree SION ERP is free to download, with no in-app purchases.

### Do USB Disk SE, File Manager or Olfactree SION ERP have ads?

USB Disk SE, File Manager shows ads; Olfactree SION ERP does not.

### Which is updated more often, USB Disk SE, File Manager or Olfactree SION ERP?

USB Disk SE, File Manager ships an update every 2 months, and Olfactree SION ERP every 3 weeks. Most recently, USB Disk SE, File Manager was updated on November 7, 2026 and Olfactree SION ERP on October 9, 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.*