Comparison

ClaroPDF Pro vs CHAT

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

Head to head
About

ClaroPDF Pro

This app transforms PDFs into accessible documents. It allows you to listen to text with synchronized highlighting, annotate PDFs with various tools, and convert image-based PDFs into searchable text. Manage and sync your files across devices for seamless study and productivity.

Highlights
  • 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
Features
Read full description

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

About

CHAT

This interactive tool uses puppet-guided interviews to help researchers collect structured responses from young children. It's designed for early childhood research, improving data consistency and child engagement in developmental psychology and educational studies.

Highlights
  • Puppet-driven interactive interviews
  • Structured data collection
  • Enhanced child engagement
  • Improved data consistency
  • Reduced training overhead
  • Optimized for field studies
Read full description

CHAT-E is an interactive interview tool designed to facilitate early childhood research using engaging, puppet-guided interactions. Developed in collaboration with Northwestern University and Head Start programs, CHAT-E helps researchers collect structured responses from young children in a playful and standardized way. Built with research usability in mind, CHAT-E improves upon traditional interview methods by reducing training overhead, enhancing data consistency, and promoting child engagement through animated puppet hosts. The platform is optimized for field studies in developmental psychology, language acquisition, and educational interventions.

Screenshots

ClaroPDF Pro4 screens
CHAT4 screens

Verdict

The call

The clearest difference is price: CHAT at Free against ClaroPDF Pro's $9.99. CHAT also leads on in-app purchases (none vs 17). ClaroPDF Pro's advantage is iOS requirement (13.0 vs 15.1). On review sentiment, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

CHAT is free to download; ClaroPDF Pro costs $9.99 up front. ClaroPDF Pro sells 17 one-off in-app purchases. CHAT asks for nothing beyond the download.

UpkeepUpdate frequency

ClaroPDF Pro ships an update every 3 weeks, CHAT every 6 weeks. The most recent releases landed on September 23, 2026 and June 25, 2026 respectively.

Scorecard4 real differences · 6 level
ClaroPDF Pro versus CHAT: the parameters behind the verdict, then further details
ParameterClaroPDF ProCHAT
Price$9.99Free — better
Rating4.2 (48 ratings) — better—
Positive reviews51.4% of reviews — better50.0% of reviews
Number of ratings48 — better—
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size147 MB37 MB
Age rating4+4+
DeveloperClaro Software LimitedSynergetx

Customer experience

ClaroPDF Pro

All ratings48 ratings
Positive77.1%
Neutral8.3%
Negative14.6%
Written reviews72 reviews
Positive51.4%
Neutral20.8%
Negative27.8%

CHAT

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

17 purchases

ClaroPDF Pro

One-time17
  • JessFree
  • HeatherFree
  • 50 Credits$0.99
Show 14 more
  • Jill$1.99
  • Heather$1.99
  • Micah$1.99
  • Rod$1.99
  • Will$1.99
  • Allison$1.99
  • Ava$1.99
  • Susan$1.99
  • Laura$1.99
  • Rachel$1.99
  • 200 Credits$3.99
  • 5000 Credits$3.99
  • Olivia$3.99
  • 500 Credits$8.99
None

CHAT

No in-app purchases

Questions

Is ClaroPDF Pro free?
ClaroPDF Pro costs $9.99, and also offers in-app purchases.
Is CHAT free?
CHAT is free to download, with no in-app purchases.
Do ClaroPDF Pro or CHAT have ads?
Neither ClaroPDF Pro nor CHAT shows ads.
Which is updated more often, ClaroPDF Pro or CHAT?
ClaroPDF Pro ships an update every 3 weeks, and CHAT every 6 weeks. Most recently, ClaroPDF Pro was updated on September 23, 2026 and CHAT on June 25, 2026.

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