OneStep Reader vs VDScan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
VDScan
Capture text from documents, labels, and signs using your camera and have it read aloud with text-to-speech. This app offers fast, accurate, and private on-device OCR with support for numerous languages. Save, export, and enhance your scanned documents with intelligent features.
- On-device OCR and text recognition
- Text-to-speech with 61 voices
- ScanTone real-time text detection
- Batch scanning mode
- Export as plain text or PDF
- Offline functionality
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Scan paper documents, labels, signs with the camera and recognize text. Listen using built-in text-to-speech. Save and export. Unlimited use: no subscriptions or additional charges. State-of-the-art A.I. for OCR and text recognition: Fast and accurate, even in poor lighting conditions. Works entirely on device: No need for internet and your data stays private. Recognizes text in the following languages: Catalan, Chinese, Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Hindi, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Spanish, Swedish, and Turkish. ScanTone, a sound that represents the amount of recognizable text in the camera's field of view in real time. It uses artificial intelligence to analyze the live feed from the camera for text, angle, rotation, and document edges. Exports scans as plain text or accessible PDF with embedded text. Detailed Feature List Scanning - ScanTone - Live edges/crop detection - Flashlight - Batch mode for scanning multiple pages quickly - Intelligent auto capture Image - Automatic edge detection for stretching and cropping - Manually cropping - Automatic orientation detection and rotation - Manual image rotation - Automatic image enhancement OCR - Fast: about a second on the latest iPhone - Offline: does not require Internet connection - Private: image and text stay on device - Automatic language detection - Option to see image or recognized text Text To Speech - Choose from 61 voices - Premium voices in Voice Dream Reader available - Change speech rate - Option to start reading as soon as OCR is complete - Spoken word is highlighted in the text or the image - Rewind and fast forward by text section (VoiceOver users only) - Double tap on text to start reading from there Import and Export - Load from Photo Library - Share extension for sending images to Scanner from another app - Export plain text - Export PDF with text layer under the image so that it's accessible, searchable and selectable - Export to Voice Dream Reader
Screenshots
Verdict
The clearest difference is price: VDScan at $14.99 against OneStep Reader's $99.99. VDScan also leads on rating (4.5 vs 3.6) and update cadence (fortnightly vs every 3 months). OneStep Reader's advantage is iOS requirement (13.0 vs 17.0). On ratings volume, ads, in-app purchases and device support 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
OneStep Reader costs $99.99 and VDScan $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
VDScan holds the better App Store score, 4.5 against 3.6. Both are backed by a comparable volume of ratings — 216 and 575 respectively. Written reviews point the same way: 46% of OneStep Reader's written reviews are positive against 72% of VDScan's.
OneStep Reader ships an update every 3 months, VDScan fortnightly. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.
| Parameter | OneStep Reader | VDScan |
|---|---|---|
| Price | $99.99 | $14.99 — better |
| Rating | 3.6 (216 ratings) | 4.5 (575 ratings) — better |
| Positive reviews | 45.5% of reviews | 71.5% of reviews — better |
| Number of ratings | 216 | 575 — better |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 177 MB | 1.2 GB |
| Age rating | 4+ | 4+ |
| Developer | Sensotec nv | Opus Noma LLC |
Customer experience
OneStep Reader
VDScan
User reviews
OneStep Reader
From 216 App Store ratingsWhat 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
VDScan
From 575 App Store ratingsWhat we love
- 🚀 Fast and accurate OCR
- 👍 Easy to use interface
- 💡 Integrates well with VoiceDream Reader
- 🚀 Impressive scanning speed
- 👍 Helpful audio cues for scanning
Room to improve
- 🐛 Crashes and loses scanned data
- 🐛 Struggles with curved/angled pages
- 🐛 Inconsistent performance on different surfaces
- 🐛 Difficulty scanning multi-column documents
Bugs and requests
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 moreShow fewer
- 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 moreShow fewer
- 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
VDScan
Reported bugs
2 issues- Crashes when scanning too many pages
- Loses scanned data after app restarts
Requested features
4 requests- Batch import of photos for OCR
- Option to edit/correct OCR results
- Support for scanning book pages and flattening
- Ability to save scans directly to cloud storage
In-app purchases
OneStep Reader
No in-app purchases
VDScan
No in-app purchases









