USB Mobile Disk vs TopMFF
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)
TopMFF
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The TopMFF is the solution for memory expansion on iOS device.
Screenshots
Verdict
The clearest difference is price: TopMFF at Free against USB Mobile Disk's $0.99. TopMFF also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 3 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
TopMFF 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, TopMFF every 3 weeks. The most recent releases landed on August 1, 2026 and September 7, 2026 respectively.
| Parameter | USB Mobile Disk | TopMFF |
|---|---|---|
| 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 | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 12.1 |
| Further details — not scored | ||
| Size | 28 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Raphael Odermatt | TOYOU CO.,LTD |
In-app purchases
USB Mobile Disk
No in-app purchases
TopMFF
No in-app purchases
