# ClaroPDF Pro – Text to Speech — Accessible PDF TTS Reader > Accessible PDF reader and annotation tool with text-to-speech and image-to-text conversion. (iPhone/iPad app by Claro Software Limited.) - Source: https://appshunter.io/ios/app/claropdf-pro-text-to-speech/id633997623 (this page in markdown: same URL + `.md`) - Developer: [Claro Software Limited](https://appshunter.io/developer/321126498) - Category: Education, Productivity - Price: $9.99 with in-app purchases - Rating: 4.20/5 from 47 App Store ratings · 72 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 147 MB - Languages: Australian English, Arabic, Danish, Dutch, French (France), German (Germany), Italian, Norwegian Bokmål, Polish, European Portuguese and 2 more - Released: 2013-06-25 - Data updated: 2026-08-25 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/claropdf-pro-text-to-speech/id633997623/reviews.md ## What is ClaroPDF Pro? 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 support@clarosoftware.com ## Key features - Text-to-speech with synchronized highlighting - PDF annotation tools (highlight, underline, notes) - Image and PDF image to accessible text conversion - Background speech playback - Customizable readability settings - iCloud synchronization ## Pricing and in-app purchases Base price: $9.99. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Jill | $1.99 | one-time | | 50 Credits | $0.99 | one-time | | Heather | $1.99 | one-time | | Micah | $1.99 | one-time | | Rod | $1.99 | one-time | | Will | $1.99 | one-time | | 200 Credits | $3.99 | one-time | | 500 Credits | $8.99 | one-time | | Allison | $1.99 | one-time | | Ava | $1.99 | one-time | | Susan | $1.99 | one-time | | 5000 Credits | $3.99 | one-time | | Jess | Free | one-time | | Laura | $1.99 | one-time | | Rachel | $1.99 | one-time | | Heather | Free | one-time | | Olivia | $3.99 | one-time | ## Chart rankings - #200 in Top Paid · Education (US App Store) ## Recent user reviews (10 of 72) All indexed reviews: https://appshunter.io/ios/app/claropdf-pro-text-to-speech/id633997623/reviews.md ### 5/5 — Excellent *2026-06-09, version 5.0.20* Few make reading and listening this easy. Well done Claro! ### 1/5 — Honestly the best, BUT… *2024-10-17* I have a learning disability and needed a Reader app that can do text to speech (TTS) AND allow for pdf annotations and ClaroPDF does the job in a visually pleasing manner with ease of use. My learning disability requires both the visual and audio which other apps now do, but ClaroPDF annotation capabilities is the icing on the cake. The ClaroPDF free version worked very well, so I upgraded to this paid version for the added OCR and iCloud sync. Unfortunately, this app is NOT well maintained and often crashes or stops if the device changes position (ie if I put my iPad down). In addition, the voices on the app are decent, but behind the times. I wouldn’t mind purchasing upgraded voices like the ones used on Speechify or ElevenLabs. I still believe that this is the absolute best app I have EVER used to read books, but my need for a stable app that doesn’t randomly crash, stop audio with device position change, and lack of higher quality voices leads me to seek out other App options, thus the 1 ⭐️ rating grade. Fortunately, the changes mentions are not a significant ask and believe YOU, the creator, can simply maintain and improve ClaroPDF. YOU CAN DO IT!!! I hope the potential for added income generated by better voices encourages your organization to invest some resources on this incredible app. I will be more than happy to update my review once YOU update the app. ### 5/5 — Excelente herramienta *2024-07-01, version 5.0.20* Mejor opción para escuchar audiolibros ### 5/5 — The best PDF reader by far. *2023-10-08, version 5.0.15* Though I have multiple PDF readers/editors on my system, I prefer using ClaroPDF Pro on my iPad. Its unique feature of allowing users to modify the PDF background color stands out. Many advanced PDF readers only provide sepia and black/white options, which inadvertently alters the colors of images, graphs, and annotations—a completely undesirable effect. In contrast, Claro lets you pick any background color from the palette while preserving the original colors of images, graphs, and annotations. It's the ideal choice for those who experience eye strain from extensive reading but still want to enjoy the process of note-taking. ### 5/5 — Love this app *2023-09-06* I was trying to find an app to use on my TD Pilot to read my packets for my certification training. I have Claro Read SE on my I16, so I wanted something similar. Love the app already. ### 4/5 — Lector de textos *2022-05-29, version 5.0.12* Me preguntaba si seria posible que el lector de textos también estuviera en el idioma catalan, de este modo la comprensión seria mucho mejor por parte del ordenador. Por ejemplo en catalan las palabras se apostrofan y en castellano no, por lo cual no identifica la palabra apostrofada, es un incordio, en el caso que se pudiera añadir de algún modo estaría encantado de saberlo. Gracias. ### 4/5 — Ideen zur Erweiterung *2022-05-26, version 5.0.12* Bin dabei, diese App für den Unterricht zu nutzen und mit den Möglichkeiten zufrieden. Toll wäre, wenn neben Kreis, Rechteck auch das Dreieck in der Formerkennung enthalten wäre. Zudem wäre eine Ausmalfunktion von weißen geschlossenen Feldern ein großes Plus. Vielleicht kann die App ja entsprechend weiterentwickelt werden. Vielen Dank SN ### 1/5 — Sticks app in portrait mode *2021-02-01, version 4.1.5* No, no, no why would you do that!!! I use the app to read science research papers, to be in anyway readable I have to turn the phone to landscape mode. If you confine the app to portrait mode it will be unusable to me. I will not be updating until you roll that back. What numpty came up with that idea? Do you even consider asking your users how they actually use the app. I am seriously not happy, I use the App every day, and this mod will scupper me!! ### 4/5 — App is crashing *2021-01-25, version 4.1.4* Hi, I am a long-time user of this app. I have been using this app since 2014. I noticed that the recent software update is making the app crash all the time. I open a document and tap on a spot (for it to start reading) then the app crashes. This is happening over and over again. I am not sure why, because this app used to work very well earlier. Can you please fix this? ### 3/5 — Not bad *2020-12-07, version 4.1.1* Works and uses given credits to convert to speech, can’t see how much credit but going by research it might be 5000 which should last me a while, can’t put on auto replay which is inconvenient to me as I wanted to replay to learn ## Frequently asked questions about ClaroPDF Pro ### What does ClaroPDF Pro do? ClaroPDF Pro is an accessible PDF tool that allows you to read, annotate, and listen to PDF files. It features text-to-speech with synchronized highlighting, a comprehensive annotation toolbar, and the ability to convert image-based PDFs into accessible text. ### How does the text-to-speech feature work? The app can speak PDF text aloud using human-quality voices, with synchronized highlighting to follow along. You can choose from system voices or up to four high-quality free voices in various languages. Features like 'Speak in Background' and 'Speak on tap' offer flexible control. ### Can I convert images or scanned PDFs to text? Yes, ClaroPDF Pro can convert PDF image files or photographs of text into fully accessible, searchable PDF files using the Claro Cloud conversion service. This process requires an internet connection and includes 5000 conversion credits, with options to purchase more. ### Is ClaroPDF Pro compatible with other PDF apps? Yes, annotations and comments made within ClaroPDF Pro are fully interchangeable with most other popular PDF apps. This ensures your notes and markups remain accessible when opening the PDF on different devices or in other applications. ### How can I manage my PDF files with this app? You can open PDF files from various sources like Mail, Safari, Dropbox, and Google Drive. Files are organized in the ClaroPDF Documents List, which is customizable with folders. You can also save files to cloud storage, email them, or open them in other compatible apps. iCloud sync is available for cross-device synchronization. ## Version history (last 5 releases) ### 5.0.20 — 2023-10-19 Minor bug fixes. ### 5.0.19 — 2023-10-16 Minor bug fixes ### 5.0.15 — 2023-04-17 Corrects some localisations. ### 5.0.14 — 2023-03-27 Fixes a bug where some downloaded voices were not appearing in the Settings menu. ### 5.0.13 — 2022-08-17 Minor bug fixes ## Apps similar to ClaroPDF Pro | App | Rating | Price | Category | | --- | --- | --- | --- | | [Voice Dream - Natural Reader](https://appshunter.io/ios/app/voice-dream-natural-reader/id496177674) | 4.5 (14,153) | Free | Education | | [WebOutLoud: Web Text to Speech](https://appshunter.io/ios/app/weboutloud-web-text-to-speech/id917672170) | 4.6 (762) | Free | Education | | [Text To Speech – Audio Reader](https://appshunter.io/ios/app/text-to-speech-audio-reader/id1621275140) | 3.9 (145) | Free | Education | | [AudibleAnything Text to Speech](https://appshunter.io/ios/app/audibleanything-text-to-speech/id6446667392) | 4.3 (102) | Free | Education | | [AI Text To Speech – Read Aloud](https://appshunter.io/ios/app/ai-text-to-speech-read-aloud/id6479716439) | 4.4 (25) | Free | Education | | [OrbitNote](https://appshunter.io/ios/app/orbitnote/id666770153) | 4.7 (60) | Free | Education | ## More apps by Claro Software Limited - [ClaroCom Pro UK](https://appshunter.io/ios/app/clarocom-pro-uk/id580531462) - [ClaroCom Pro](https://appshunter.io/ios/app/clarocom-pro/id623306168) - [Claro MagX](https://appshunter.io/ios/app/claro-magx/id653398060) - [ClaroSpeak Plus](https://appshunter.io/ios/app/clarospeak-plus/id845128025) - [ClaroCom](https://appshunter.io/ios/app/clarocom/id903818521) All apps by Claro Software Limited: https://appshunter.io/developer/321126498 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*