USB Disk SE, File Manager vs Authenticator by Hottub
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
USB Disk SE, File Manager
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.
- 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
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USB Disk lets you store, view and manage documents on your iPhone and iPad. It has an amazing built in document viewer and is very easy to use, with a simple and intuitive interface, yet it contains many powerful features. Drag and drop files in iTunes to transfer them to your iPhone / iPad, then view them anywhere! TUAW - "USB Disk is [...] a nicely designed one." Lifehacker - "The Best. USB Disk for iOS gives you a fast and easy way to transfer documents and images to your device." Apple - "New and Noteworthy" TOP REASONS TO BUY • Access Dropbox, Google Drive, OneDrive and Box. • Store and view files on your iPhone / iPod. • Navigate using swipes (like Photos / iBooks app). • Thumbnails let you preview your files. • Copy, paste, cut, delete and create files. MORE FEATURES • View and download email attachments. • Full screen file viewer. • USB file transfers. • Background audio. • Slideshow with adjustable delay. • Fast scrolling, page up/down functionalities. • Email your documents. SUPPORTED FILE TYPES • PDF files. • MS Office documents. • iWork documents. • Pictures (jpg, png, gif, ...). • eBooks (pdf, ePub, html, txt, ...). • Comics (cbr, cbz, pdf, ...). • Audio files (mp3, m4a, wav,...). • Video files (m4v, mov, avi, mkv, ...). UPDATES Buy now and get free updates. SUBSCRIPTION All features listed above can be used without an in app purchase. Some advanced features require an active subscription. These include: • Open and create zip files. • Adjust the audio mixer, use shuffle and repeat. • Access the device's photos library. • Protect the access to the app or specific files and folders with lock codes. • Access WebDAV and FTP servers. You can also configure SharePoint connections. • Edit simple text files. Also annotate PDF files. • Present files on external screens. Duration and price of each subscription are displayed in our storefront. All subscription costs will be charged to your Apple ID account, starting at the confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the subscription period. Your account will be charged for renewal within 24 hours prior to the end of the subscription period. It is not possible to cancel a subscription period once you have been charged for it. Any unused portion of a free trial period is forfeited as soon as a subscription is purchased. You can manage subscriptions and disable auto renewal by going to your account settings on the App Store after purchase. Terms of Service: https://imesart.com/legal/terms-of-service.php
Authenticator by Hottub
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Authenticator by Hottub is a free two-factor authenticator for iPhone and Apple Watch. It makes the one-time codes that protect your accounts, keeps your setup keys encrypted on your iPhone, and moves with you through encrypted backups. No ads, no tracking, and no account required. ADD ANY ACCOUNT THAT SUPPORTS 2FA Turn on two-factor authentication for any website or app that offers an authenticator app, then scan its QR code or type its setup key. Authenticator by Hottub makes standard time-based one-time passwords (TOTP), the six- or eight-digit codes almost every service uses. MOVE FROM GOOGLE AUTHENTICATOR IN ONE SCAN Export your accounts from Google Authenticator, then scan the QR codes or pick the screenshots from your photo library. Large exports that span several QR codes are fine. You review every account on your iPhone before anything is added, and duplicates are skipped. FIND THE RIGHT CODE FAST Search by service, account or group, keep favorites at the top, and tap a code to copy it. A countdown shows when each code changes, and VoiceOver reads codes digit by digit. ENCRYPTED, AND HIDDEN WHEN IT SHOULD BE Setup keys live in an encrypted vault on your iPhone. Turn on app lock to require Face ID, Touch ID or your passcode. Codes stay hidden in the app switcher, during screen recording, mirroring and AirPlay. BACKUPS YOU CONTROL Make an encrypted backup locked with a passphrase only you know, and restore every account on a new iPhone in a minute. Hottub can never open it. Encrypted cloud backup is optional when you connect a Hottub account. APPROVE SIGN-INS WITH NUMBER MATCHING Connect a Hottub account and approve Hottub sign-ins from your phone or Apple Watch. To approve, tap the number shown on the screen you're signing in on; a wrong number blocks the sign-in. Approving needs Face ID, Touch ID or your passcode. Deny is always one tap, and "This wasn't me" reports a sign-in you didn't start. WORKS WITH THE SERVICES YOU USE Any service that offers "authenticator app" sign-in works, including Google, Microsoft, Proton, Amazon, GitHub, Dropbox, Discord, Reddit, Instagram, Facebook, X, Slack, Coinbase, Binance and your company's single sign-on. SHA-1, SHA-256 and SHA-512 codes and 30- or 60-second periods are supported. APPLE WATCH The Apple Watch companion shows Hottub sign-in requests and lets you approve one by tapping the matching number, or deny it, right from your wrist. Setup keys, codes and backups never leave your iPhone. HOTTUB DEVICES If you own supported Hottub devices, Authenticator by Hottub shows the exact operation, the devices it targets and when it expires before you confirm it with Face ID, Touch ID or your passcode. Your confirmation covers that one request only; safety checks stay on the device. PRIVATE BY DESIGN The authenticator works signed out and offline. Your setup keys are never uploaded unless you turn on encrypted cloud backup, and Hottub cannot read them even then. WHAT YOU GET - TOTP codes for any service that supports authenticator apps - QR scanner, setup-key entry, and Google Authenticator import from camera or screenshots - Search, favorites, groups, countdowns and tap-to-copy - Encrypted vault with optional Face ID, Touch ID or passcode lock - Codes hidden from screen recording, mirroring and the app switcher - Encrypted backup and restore to a new iPhone, locked by your passphrase - Optional Hottub sign-in approvals with number matching, on iPhone and Apple Watch - Owner confirmation for supported Hottub devices, with the exact operation shown before you approve - Free, with no ads and no tracking GOOD TO KNOW - Codes depend on your iPhone's clock. Keep "Set Automatically" on in Settings > General > Date & Time. - Turn on app lock if anyone else ever uses your iPhone. - Write down your backup passphrase. Nobody, including Hottub, can recover it. - Keep your services' recovery codes somewhere safe, as you would with any authenticator.
Screenshots
Verdict
The clearest difference is in-app purchases: Authenticator by Hottub at none against USB Disk SE, File Manager's 4. Authenticator by Hottub also leads on ads (none vs shown). On price, update cadence, 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
Both are free to download. USB Disk SE, File Manager sells 4 in-app purchases, starting at $1.99 per 7 days. Authenticator by Hottub asks for nothing beyond the download.
USB Disk SE, File Manager ships an update every 3 months, Authenticator by Hottub every 6 weeks. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.
| Parameter | USB Disk SE, File Manager | Authenticator by Hottub |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (846 ratings) — better | — |
| Positive reviews | 76.3% of reviews | — |
| Number of ratings | 846 — better | — |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple TV, Apple Watch — better | iPhone, iPad, Apple Watch |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 224 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Imesart S.a.r.l. | Hottub |
Bugs and requests
USB Disk SE, File Manager
Reported bugs
3 issues- Crashes when opening certain file types
- Syncing issues with iTunes
- Compatibility problems with newer iOS versions
Requested features
4 requests- Ability to edit documents within the app
- Improved file management with folders and renaming
- Support for more file types
- Wireless file transfer without iTunes
Authenticator by Hottub
Not enough reviews yet to summarise bugs or requests.
In-app purchases
USB Disk SE, File Manager
- USB Disk Pro Weekly$1.997 Days
- USB Disk Pro Monthly7 Days trial$4.991 Month
- USB Disk Pro Half Yearly14 Days trial$19.996 Months
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- USB Disk Pro Yearly1 Month trial$39.991 Year
Authenticator by Hottub
No in-app purchases
Questions
Is USB Disk SE, File Manager free?
Is Authenticator by Hottub free?
Do USB Disk SE, File Manager or Authenticator by Hottub have ads?
Which is updated more often, USB Disk SE, File Manager or Authenticator by Hottub?
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