# FileViewer USB for iPhone vs MetriX DSD

The clearest difference is review sentiment: FileViewer USB for iPhone at 56% against MetriX DSD's 0%. FileViewer USB for iPhone also leads on rating (4.0 vs 3.0) and chart position (#174 vs unranked). MetriX DSD's advantage is price (Free vs $3.99) and iOS requirement (11.0 vs 15.0). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

MetriX DSD is free to download; FileViewer USB for iPhone costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

FileViewer USB for iPhone holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 56% of FileViewer USB for iPhone's written reviews are positive against 0% of MetriX DSD's.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | FileViewer USB for iPhone | MetriX DSD |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/fileviewer-usb-for-iphone/id382994576/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/metrix-dsd/id1515441344/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | **55.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#174** | — |
| Size | 17 MB | 27 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mitchell COHEN](https://appshunter.io/developer/301383007) | [FlexiBake Ltd.](https://appshunter.io/developer/1515441343) |

## What reviewers say

### FileViewer USB for iPhone

[App page](https://appshunter.io/ios/app/fileviewer-usb-for-iphone/id382994576)

**Currently charting:** #174 Top Paid · Business (US App Store)

This app allows you to view, store, transfer, print, and email a wide variety of file types on your iPhone. It offers robust PDF viewing capabilities, supports numerous document and media formats, and integrates with cloud storage services.

**Highlights:** View over 30 file types, Robust PDF reader, File and folder management, Transfer via USB, Wi-Fi, AirDrop, Email, Cloud storage integration, Print documents and images

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

**In-app purchases:** none


### MetriX DSD

[App page](https://appshunter.io/ios/app/metrix-dsd/id1515441344)

Streamline delivery operations with this app. Manage invoices, collect payments, record expenses, track inventory, and finalize reports on the go. Requires a backend ERP system for full functionality.

**Highlights:** Edit invoices on the go, Collect payments and information, Record expenses, Track inventory, Enter returns, Finalize end-of-day reports

**In-app purchases:** none


## Frequently asked questions

### Is FileViewer USB for iPhone free?

FileViewer USB for iPhone costs $3.99, with no in-app purchases.

### Is MetriX DSD free?

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

### Which has better reviews, FileViewer USB for iPhone or MetriX DSD?

FileViewer USB for iPhone is rated higher. FileViewer USB for iPhone averages 4.0 out of 5 from 2 ratings, while MetriX DSD averages 3.0 from 2 ratings.

### Do FileViewer USB for iPhone or MetriX DSD have ads?

Neither FileViewer USB for iPhone nor MetriX DSD shows ads.

### Which is updated more often, FileViewer USB for iPhone or MetriX DSD?

FileViewer USB for iPhone ships an update every 4 months, and MetriX DSD every 4 months. Most recently, FileViewer USB for iPhone was updated on November 1, 2026 and MetriX DSD on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*