ClaroPDF Pro is an accessible, reading and study PDF tool for all. Annotate, mark up, listen to and save PDF files which are then still fully compatible with other popular PDF apps. Have accessible text PDF files spoken back to you with human quality voice & synchronized highlighting. PDF image files or photographs of text can be converted to accessible, searchable PDF files using the Claro Cloud conversion service.

+ Speech, Productivity and Accessibility
Alongside the full range of iOS system voices, ClaroPDF Pro lets you choose up to 4 high-quality voices for free, in the languages of your choice. A ‘Speak in Background’ option lets you listen to a PDF while viewing another app - great for proofreading PDF files while you’re working in other apps. The ‘Speak on tap’ and ‘Stop on tap’ options make speech easy to control.

+ ClaroPDF allows the background color of the PDF to be changed, and text color inverted, to enhance readability. ClaroPDF fully supports VoiceOver.

+ Annotations, Notes and Comments
ClaroPDF includes a powerful Annotation toolbar that lets you add notes and other comments. These are fully interchangeable with most other popular PDF apps, so your ClaroPDF comments will still be there if you open the PDF on another device. Annotations created in another PDF app can also be viewed and edited.

Annotation features include: highlight; underscore; strikeout; notes; free text (type straight into the PDF); free line draw; shapes (circle, square, line - with many options); images (you can even insert photos from your iPad camera or photo library into the PDF file); audio and video.

+ Photos and Image PDF to Text PDF Conversion
You can convert photos and other images to fully accessible text PDF files that can be spoken, searched, copied and highlighted. As well as converting photos, you can also convert any PDF Image file into a fully accessible Text PDF file. Along with making these PDF files accessible and searchable, it will also compress them, reducing file size. 5000 pages and photos can be converted using the 5000 included credits. Further credit can be purchased in app. Photos and Image PDF to Text PDF Conversion in ClaroPDF uses the Claro Cloud conversion service and requires an internet connection.

***Minimum camera spec: 2MP***

+ Managing PDF Files
PDF files can be opened in ClaroPDF from all other apps, including Mail and Safari. All opened PDF files will be placed in the ClaroPDF Documents List for later viewing. You can also open files from Dropbox, Google Drive, or import files via iTunes. PDF files can be saved into ClaroPDF’s Documents, Dropbox or Google Drive, sent by email, or opened in other apps that support PDF files. The ClaroPDF Documents List is fully customisable, allowing you to organise your PDF files and folders.

+ Sync with iCloud
You can sync ClaroPDF with your iCloud account. This lets you store and synchronize your PDF files and annotations across multiple devices. Sync with iCloud can also act as a document backup so you can keep your documents safe.

+ Save as PDF Extension
The "Save as PDF" Extension lets you convert text and images to PDF files from Safari, Notes, Photos and other apps using the iOS "Share" feature. When converted, these new PDF files will appear in your documents list inside ClaroPDF.

+ Included Text to Speech Voices
Download any 4 of our high quality text to speech voices. Once you have downloaded your free voices, other Nuance Expressive, Acapela and CereProc voices are available to purchase in-app.

+ Switch Accessibility
ClaroPDF responds to switch or Bluetooth keyboard commands:
1 (~1) Start speech
2 (~2) Stop speech
3 (~3) Turn to previous page
4 (~4) Turn to next page

+ Fullscreen mode
Allows the full document to be seen without toolbars in view. Ideal for smaller screens!

Need help with ClaroPDF or have any suggestions? Please email

What’s New

Version 2.4.12

Fixes an issue with Google Drive not refreshing upon sign in.

Ratings and Reviews

3.9 out of 5
18 Ratings
18 Ratings
Tohru30 ,

Crashing issues

Not sure what’s going on but the app is crashing again

Developer Response ,

Hi, thanks for reporting this. We are working on a fix and hope to have it available later today or tomorrow. We're sorry that this is affecting you and you're unable to use our ClaroPDF app.

EDIT: The new 2.4.11 update should now be available and will hopefully resolve this issue for you. If not, please contact our technical team at and we will do our best to assist.

Imax111 ,

Fix crash issue after iOS 12

Love the app... when it is working well. Currently since ios12 release the app is unusable due to crashes.

Developer Response ,

Hi, thanks for your feedback. We've now released an update to fix this issue on iOS 12.

Gump30 ,

Great Product but needs to be fixed!

I have been using Claro PDF for several years to read through documents and texts. It is a great tool to help in your studies since you can listen and read at the same time. A major annoyance in the latest version is a big color circle that pops up on every page and will not allow you to start at any sentence on the page. I have gone through all the settings, but their seems to be no way to fix it. It is very nice to be able to pause and start from wherever you want on the screen. With this glitch, you have to start at the top of the screen every time you stop reading or pause. Please fix this glitch!

Developer Response ,

Hello, we appreciate you taking the time to write such a detailed review. This sounded like a bug in one of these versions of ClaroPDF and it now should be fixed


Claro Software Limited
140.9 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Arabic, Danish, Dutch, French, German, Italian, Norwegian Bokmål, Polish, Portuguese, Spanish, Swedish
Age Rating
Rated 4+
© 2013, Claro Software Ltd
In-App Purchases
  1. 5000 Credits $3.99
  2. 50 Credits $0.99
  3. Jill $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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