Comparison

USB Disk Pro vs OneStep Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

USB Disk Pro

Manage and view documents on your iPhone and iPad with this powerful file manager. It offers a built-in viewer, easy file transfers via iTunes or Wi-Fi, and supports numerous cloud services. Secure your files with encryption and access them from various locations.

Highlights
  • Store and view files
  • Built-in document viewer
  • iTunes and Wi-Fi file transfers
  • Cloud service integration
  • File encryption and protection
  • Supports Files app
Features
Read full description

USB Disk Pro 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 • Store and view files. • Open multiple documents in different pages. • Restores last viewing position. • Navigate using swipes (like Photos / iBooks app). • Thumbnails let you preview your files. • Protect & encrypt files using Apple's Data Protection. • Supports the Files application (file provider for iOS 11+). MORE FEATURES • View and download email attachments. • Full screen file viewer. • Copy, paste, cut, delete and create files. • USB file transfers. • File transfers without iTunes over WiFi. • TV / VGA out. • Slideshow with adjustable delay. • Fast scrolling, page up/down functionalities. • Email your documents. • Lock code. • Download web files. • In app web browser. • Storage provider for other apps. • Background audio. BROWSING LOCATIONS • Local files. • Dropbox. • Google Drive. • OneDrive, SharePoint. • Box. • Evernote. • WebDAV and WWW servers. • FTP, SFTP servers. • Device's Photo Library. READING FILE TYPES • PDF files. • Compressed files (zip, rar). • 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, ...). EDITING FILE TYPES • ZIP files. • Small txt files. • PDF annotations. UPDATES Buy now and get free updates.

About

OneStep Reader

This app uses your device's camera to instantly convert printed text into spoken words or Braille. It offers synchronized highlighting and supports various document formats, making reading accessible for individuals with visual impairments or reading differences.

Highlights
  • Text-to-speech conversion
  • Text-to-Braille output
  • Synchronized text highlighting
  • Photo import and capture
  • Support for PDF, JPEG, and ePub
  • Batch page processing
  • Cloud storage integration
Features
Read full description

OneStep Reader gives you instant access to print anytime and anywhere. OneStep Reader 3.0 is a rapid and efficient text recognition app. Its text-to-speech, text-to-Braille, and text highlighting tools make it valuable for blind, low-vision, dyslexic, and others with reading differences. Use it to import or take a photo of anything containing text. Take a photo and the app reads text out loud or displays it on a connected refreshable Braille display. Read with more ease thanks to the simultaneous highlighting of the sentence and word that is being read on the picture or in the plain text document. The app helps you get a good photo with special alignment tools, including spoken and vibration guidance. Snap multiple pages, such as a book, for later reading. Winner of the 2014, 2015, and 2016 AppleVis Golden Apple Award for Best Assistive Technology App. • Reads image-based PDF and JPEG files, and now tagged PDF and ePub files too! • Exports OneStep reader files as HTML or TXT files. • Navigates by line, sentence, word, or character. • Crop, rotate and edit the pictures you take before performing text recognition. • View documents in PDF presentation mode with double highlighting while reading. • View reading order and language-tagged PDF documents. • Add and remove bookmarks in PDF documents. • Switch between PDF view and reflowable text view. • Read documents in the increasingly popular ePub format. The app also has synchronized text highlighting to help you read along with the spoken text, a benefit for people with dyslexia and other reading difficulties. Need nutritional information from your breakfast cereal? OneStep reader can read labels. Out shopping and need a price? OneStep Reader can read price tags. Want to know what came in the mail? OneStep Reader captures it all. OneStep Reader captures print from your computer or tablet screen. Photograph the screen and know exactly what that error message says. Little details abound. We got rid of the fifty-page limit for batch recognition. Everything gets turned on its side with landscape support. Add subfolders to the local folder structure. Use Microsoft OneDrive, Dropbox, or Google Drive to store and retrieve your documents. You can now make calls, send emails, and open hyperlinks directly from documents; call or email your new contact directly from the text of her business card! Fully localized versions (user interface, recognition and speech) are available in: English, German, Italian, French, Spanish, Norwegian (Bokmål), Swedish, Portuguese, Dutch, Turkish, Danish, Polish, Russian, Japanese, and Czech. Other languages available for speech and recognition only: Afrikaans, Albanian, Bulgarian, Chinese (Simplified), Chinese (Traditional), Croatian, Estonian, Finnish, Greek, Hungarian, Icelandic, Indonesian, Romanian, Serbian (Cyrillic), Serbian (Latin), Slovak, Ukrainian. Supported devices: iPhone X, iPhone 8 Plus, iPhone 8, iPhone 7, iPhone 7 Plus, iPhone SE, iPhone 6s, iPhone 6s Plus, iPhone 6, iPhone 6 Plus, iPhone 5s, iPhone 5c, iPadPro, iPad Pro 12.9-inch, iPad Pro 9.7-inch, iPad Air 2, iPad Air, iPod touch 6th Generation, iPod 5th Generation. Visit our website at: www.OneStepreader.com

Screenshots

USB Disk Pro4 screens
OneStep Reader1 screens

Verdict

The call

The clearest difference is rating: USB Disk Pro at 4.5 against OneStep Reader's 3.6. OneStep Reader's advantage is iOS requirement (13.0 vs 16.0). On price, ratings volume, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

USB Disk Pro costs $99.99 and OneStep Reader $99.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

USB Disk Pro holds the better App Store score, 4.5 against 3.6. Both are backed by a comparable volume of ratings — 142 and 216 respectively.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 8 level
USB Disk Pro versus OneStep Reader: the parameters behind the verdict, then further details
ParameterUSB Disk ProOneStep Reader
Price$99.99$99.99
Rating4.5 (142 ratings) — better3.6 (216 ratings)
Positive reviews—45.5% of reviews
Number of ratings142216 — better
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, Apple TV, Apple Watch — betteriPhone, iPad, iPod
Requires iOS16.013.0 — better
Further details — not scored
Size215 MB177 MB
Age rating17+4+
DeveloperImesart S.a.r.l.Sensotec nv

Customer experience

USB Disk Pro

All ratings142 ratings
Positive89.4%
Neutral4.2%
Negative6.3%

OneStep Reader

All ratings216 ratings
Positive55.1%
Neutral21.8%
Negative23.1%
Written reviews112 reviews
Positive45.5%
Neutral16.1%
Negative38.4%

User reviews

USB Disk Pro

From 142 App Store ratings

What we love

  • 🚀 Simple and reliable
  • 👍 Great for file storage and management
  • 🚀 Efficient file transfer
  • 👍 Versatile file support
  • 🚀 Excellent app for iPad/iPhone

Room to improve

  • 🐛 Occasional crashes and stability issues
  • 🐛 Compatibility problems with certain file formats
  • 🐛 Blurry document rendering
  • 🐛 Unreliable cloud/network connectivity

OneStep Reader

From 216 App Store ratings

What we love

  • 📖 Accurate OCR for reading printed text and PDFs
  • 🎯 Effective for reading mail and documents independently
  • 📱 Convenient mobile accessibility to printed materials
  • 🔊 Helpful for visually impaired and blind users
  • ⚡ Fast processing of scanned images

Room to improve

  • 💰 Expensive at $99 with no trial version
  • 🐛 Frequent crashes and app freezes
  • 📱 Incompatible with newer iPhone models
  • 🔊 Robotic and limited voice options
  • 🎯 Poor accuracy with complex documents and tables

Bugs and requests

USB Disk Pro

Reported bugs

3 issues
  • App closing unexpectedly when using certain features
  • Inability to open large files without crashing
  • Inconsistent file handling and naming

Requested features

4 requests
  • Advanced video player controls (fast forward, slow motion, zoom)
  • Basic image editing tools
  • Improved file/folder organization and naming
  • Integration with more cloud storage services

OneStep Reader

Reported bugs

17 issues
  • App crashes when opening or processing PDF files
  • App fails to launch on newer iPhone models (iPhone 11 Pro Max, iPhone 12 Pro Max, iPhone XR)
  • App crashes when scanning multiple documents
  • Crashes on iOS 12 and later versions
  • Volume button photo capture fails intermittently
Show 12 more
  • Automatic photo feature does not work reliably
  • Field of view report functionality unreliable
  • Text recognition produces garbled output with random symbols and numbers
  • App does not properly close or exit, continuing to vibrate phone
  • Imported files not displaying in file list without app restart
  • Speech rate settings reset to default after closing app
  • Saved files become modified when opened, affecting search order
  • PDF files converted to unreadable format after extended use
  • App throws errors when attempting to take pictures
  • Incompatibility with iOS updates
  • Domain deactivation causing loss of support access
  • File import process is broken and confusing

Requested features

15 requests
  • Free trial version before purchase
  • Video tutorial or podcast demonstrations
  • Real-time document scanning without manual alignment
  • Automatic photo capture like banking apps
  • Multiple voice options and customization
Show 10 more
  • Better paragraph-level navigation for VoiceOver users
  • Landscape mode support for iPad
  • iCloud integration
  • Direct PDF download without cloud service
  • Improved field of view reports
  • Better braille support and display
  • Paragraph-level reading instead of word-by-word
  • Smart invert compatibility
  • Progress indicators during OCR processing
  • Better handling of columns and complex layouts

In-app purchases

None

USB Disk Pro

No in-app purchases

None

OneStep Reader

No in-app purchases

Questions

Is USB Disk Pro free?
USB Disk Pro costs $99.99, with no in-app purchases.
Is OneStep Reader free?
OneStep Reader costs $99.99, with no in-app purchases.
Which has better reviews, USB Disk Pro or OneStep Reader?
USB Disk Pro is rated higher. USB Disk Pro averages 4.5 out of 5 from 142 ratings, while OneStep Reader averages 3.6 from 216 ratings.
Do USB Disk Pro or OneStep Reader have ads?
Neither USB Disk Pro nor OneStep Reader shows ads.
Which is updated more often, USB Disk Pro or OneStep Reader?
USB Disk Pro ships an update every 3 months, and OneStep Reader every 3 months. Most recently, USB Disk Pro was updated on October 13, 2026 and OneStep Reader on October 12, 2026.

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