USB Mobile Disk vs OpSec Purchase
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
USB Mobile Disk
This app turns your iPhone or iPad into a portable storage device, allowing you to carry documents, music, and videos. It features a built-in file manager, music player, PDF reader, and supports various file transfer methods.
- Portable storage for iPhone/iPad
- Advanced file manager
- Background music player
- PDF reader
- Gallery import/export
- FTP and HTTP file access
- ZIP file creation/extraction
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Carry all your documents, music, videos and any other data always with you. Store all your precious information in one secure place! This app transforms your iPhone & iPad to an advanced USB stick, full featured music player and even more: ▶ Use your iPhone and iPad as portable storage ▶ Advanced built-in file manager (rename, copy & paste, add folder, ...) ▶ Advanced background capable music player ▶ Advanced PDF reader ▶ Gallery import (photo and video) ▶ Gallery export (photo and video) ▶ Transfer downloaded files to your computer with iTunes ▶ Full FTP access to your files ▶ Full HTTP access to your downloads with your browser ▶ Send files by e-mail ▶ Receive files from other apps (e.g. e-mail attachments) ▶ Open files with other apps (e.g. Dropbox) ▶ Watch movies offline and listen to your music ▶ Preview and read documents (PDF Viewer) ▶ Create and extract ZIP-files ▶ Print documents using AirPrint ▶ Universal iPad / iPhone app ▶ HD / Retina support ▶▶▶ Have your USB stick always with you! The following file types are compatible with the built-in viewer. MOVIE FORMATS: Apple QuickTime (.mov), MPEG-4 (.mp4), m4v, 3GPP (.3gp) AUDIO FORMATS: MPEG-4 Advanced Audio Coding (.aac), Apple Lossless (.m4a) MPEG-1 audio layer 3 (.mp3), Waveform (.wav) DOCUMENT FORMATS: Excel (.xls), Keynote (.key.zip), Keynote '09 (.key), Numbers (.numbers.zip), Numbers '09 (.numbers), Pages (.pages.zip), Pages '09 (.pages), PDF (.pdf), Powerpoint (.ppt), Word (.doc), Rich Text Format (.rtf), Rich Text Format Directory (.rtfd.zip), Text (.txt), HTML (.htm/.html) IMAGE FORMATS: JPEG (.jpg/jpeg), Portable Network Graphics (.png), Graphics Interchange Format (.gif)
OpSec Purchase
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OpSecPurchase is a mobile application for existing OpSec Online and OpSec Security customers that allows test purchases to be made anonymously and online. Especially the sales force can thus quickly and efficiently detect counterfeit goods and provide a complete set of evidence that can be used in court. This version provides mystery shopping online and mobile in all important markets globally (North and South America, Europe and Middle East and Asia). Only for a closed user group accessible.
Screenshots
Verdict
The clearest difference is price: OpSec Purchase at Free against USB Mobile Disk's $0.99. OpSec Purchase also leads on ads (none vs shown). USB Mobile Disk's advantage is update cadence (every 3 months vs every 7 months). On in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
OpSec Purchase is free to download; USB Mobile Disk costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
USB Mobile Disk ships an update every 3 months, OpSec Purchase every 7 months. The most recent releases landed on August 1, 2026 and September 17, 2026 respectively.
| Parameter | USB Mobile Disk | OpSec Purchase |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.3 (10 ratings) — better | — |
| Positive reviews | 62.5% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 3 months — better | Every 7 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 28 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Raphael Odermatt | Opsec Security Group, Inc. |
In-app purchases
USB Mobile Disk
No in-app purchases
OpSec Purchase
No in-app purchases
Questions
Is USB Mobile Disk free?
Is OpSec Purchase free?
Do USB Mobile Disk or OpSec Purchase have ads?
Which is updated more often, USB Mobile Disk or OpSec Purchase?
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