KNFB Reader

KNFB Reader

By Sensotec nv

  • Category: Productivity
  • Release Date: 2014-09-18
  • Current Version: 3.0.1
  • Adult Rating: 4+
  • File Size: 377.47 MB
  • Developer: Sensotec nv
  • Compatibility: Requires iOS 10.0 or later.
Score: 4.5
From 99 Ratings


KNFB Reader gives you instant access to print anytime and anywhere. KNFB 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 KNFB 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? KNFB reader can read labels. Out shopping and need a price? KNFB Reader can read price tags. Want to know what came in the mail? KNFB Reader captures it all. KNFB 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:



  • KNFB 3.0 Awesome

    By oklahomajoes
    I like everything I’ve learned about the new version. The access to one drive and Dropbox is great. Batch processing is greatly improved—telling me how many pictures I have taken. Saving and deleting files is now stable. Having the option to save and view files as PDF is a good addition.
  • Great app

    By ftf@ftf
    This app is awesome, God bless the creators of this app, I am legally blind, and I use this app on a daily basis at home for my mail and outside for other reading material, thank you very much
  • KNFB Reader v 3.0

    By monster1952
    I have been enjoying the new features of Version 3.0, especially now one can save file in othe cloud storage services such as Microsoft’s One drive and Google Drive besides dropbox.I like the layout of the screens and the speed of processing images that are taken.
  • Great app

    By Patti pgc
    I use this for quick access to PDF files on a regular basis
  • Awesome app!

    By puppya
    Keep up the good work!
  • I expect a lot more for the money I spent

    By PDXJavaJunkie
    The fact that such an app exists at all to help those of us who can’t see well enough to read print is worthy of three stars, so I am grateful we have this tool. That said, this behaves more like a free app than one I spent $100 on. First of all, where are the updates??? We are coughing up the money, so you should be providing frequent updates. My biggest issue with the app is trying to line up the shot when scanning a document. The phone vibrates wildly, which I gather is supposed to indicate whether or not it is being held at a level angle over the page, but I find this almost impossible to get just right and more annoying than helpful. Can’t alignment of the page be done electronically during image processing? Secondly, I wish it behaved like banking apps when you are taking a picture of a check for an electronic deposit. You simply hold the phone over the document and move it around a bit until it is lined up. Once it is aligned, the app automatically takes the picture for you and processing begins. For $100, why isn’t this app doing the same? The technology obviously exists. Instead, it is a tedious game of guess-and-check where I have to continuously press one of the volume buttons to get a status update on whether or not I am lined up. Even The motion of reaching to press this button makes it harder to steady the phone, so I never feel like I get a really good shot. These announcements should happen automatically. Finally, the documents generated, while often producing some readable text, usually also have a mess of garbled text and random symbols, making it very hard to find what you are looking for. I know the technology exists nowadays for OCR processing to work much more smoothly than this, and again, at the price you are asking, your app needs to be a lot better. If I had it to do over again, I wouldn’t have purchased this app and would have just settled for something free that basically gets the job done comparably well. Many blind and visually impaired people are on fixed incomes, so taking a chance on something like this with no option of getting your money back is a big deal.

    By Majesty42
    Since updating to 11.2.5 . I can no longer safe knfb files. This app is in my opinion one of the greatest OCR recognition out there very pricy but worth it👍🏾. But at 99.99 there should not be any issues with iOS updates. Again! The save knfb file feature crashes every time I try to save a file using iOS 11.2.5 . Developer PLEASE GIVE US AN UPDATE!!!! and please be on top of future updates because the apple corporation loves them and that process has destroyed developers and clients.
  • Amazing

    By Hab33b
    Totally worth the price helps me everyday and can be used so many different ways
  • Excellent OCR, needs a little more work

    By JFellows
    This is a great app for single-page scanning! With a couple fixes it could be great for multi-page scanning, too (more about that below). Bought at $50 (50% off the regular $100 price), its OCR has proven very accurate and quick, amazing me at how it can accommodate automatically for slightly curved pages and such. I appreciate how you can add pages to existing files at any time. Thanks to the developers who continue to refine the app! While it is over 90% there, it is too rough for a $50 app (let alone $100 at the regular price). Scanning a document over 35-40 pgs consistently causes the app to crash. (I've resorted to scanning longer documents into multiple 35-page files in knfbReader, a rather untidy but functional workaround.) The app also lacks bookmarking, an essential feature for multi-page documents, especially for the visually impaired. I have resorted to exporting the text as a txt file and importing it into the Voice Dream app, which has superior text-to-voice and ereader capabilities than knfbReader (e.g. use a slider to move forward and back through the text, higher quality voices, automatic bookmarking saves where you left off, syncs with Pocket, displays the amount of time it would take to listen to a selection next to the name, etc.) Note: I've noticed that the device you use to scan can make a significant difference in scan speed. Changing from an iPod touch 5th gen to an iPhone 6 doubled my scan speed, in part due to faster focusing. When possible, scanning two facing pages of a book at a time doubled my scanning speed again. Tip: Use as bright a light as possible to speed up focus time and, therefore, scan time's under lower light conditions focusing can take considerably longer. A couple other requests include: - Cloud syncing between devices without requiring manually exporting from one device and importing into the app on another device - More polished user interface I am sighted and use this app to increase the number of articles and books I can go through by listening instead of reading. I tend to listen to more audiobooks than I read paper books, and my hope is to make more paper articles and books readily accessible in audio form. This app is a great example of how improving accessibility for some can improve it for all. In short, knfbReader is a diamond in the rough. At this price, I expect better quality. Once the crashing and bookmarking have been worked out, it could be magnificent. (Then, I would give it 5 stars.) The developers are actively working on it, so with continued effort they may yet refine knfbReader into a solid app worthy of the price.
  • Speach Rate Adjustments Are Bad

    By Stryker Five Seven
    In a recent update the speach rate settings are bad. First of all the range of speach rate is unnessessary. From way too slow to way too fast. Secondly, when set on 48 is normal (for me), but slide it to 52 and it's way too fast. ???? Lastly, when I'm finally able to get the speach rate set it goes back to the default setting every time I close the program. The default setting is insanely slow. This whole "Speach Rate" issue is very frustrating and needs to be addressed. Otherwise the app works well. Update: 8 December, 2017. The first few words frequently come out as unreadable text (symbols). This app is good, but for $100 it should be MUCH better and get more frequent attention and updates. Still 2 star at best 😒