Comparison

PDF Expert vs ClariFlowx

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

Head to head
About

PDF Expert

This app allows you to edit, annotate, fill out forms, and convert PDF documents. It offers AI-powered summarization and analysis, along with tools to merge, sign, and protect your files. Work seamlessly across Apple devices with a user-friendly interface.

Highlights
  • Edit PDF text and images
  • Annotate and highlight PDFs
  • Fill out PDF forms
  • Convert files to and from PDF
  • AI-powered summarization and analysis
  • Merge and combine PDF files
  • Sign documents with e-signatures
Features
Read full description

PDF Expert is a fast and easy PDF app to read, annotate, fill and sign PDF forms, convert files to PDF, and merge, split or compress documents – all in one intuitive app for iPhone, iPad, Mac & Vision Pro. Read PDF files with comfort, highlight and mark up text, fill out forms, sign contracts, create and convert PDFs, and summarize long documents in seconds with AI-powered tools. Unlock unlimited possibilities with PDF Expert Premium and work across all your Apple devices. "PDF Expert is one of my must-have iPad apps and a desktop-class PDF reader." – MacStories "The best app for managing, editing, and reading PDFs on your iPad." – The Sweet Setup ▶ WITH PDF EXPERT, YOU CAN: READ PDFs - PDF reader with Day, Night, and Sepia modes for comfortable reading anytime - Scroll PDFs vertically or horizontally and search text in any document - Open and view PDF files from email, web, Files, or any app via the Share menu - Read PDFs out loud with Text to Speech ANNOTATE AND MARK UP PDFs - Highlight, underline, and strike through text in your PDFs - Mark up documents with pen, shapes, text, notes, and comments - Add stamps such as Approved or Confidential - Record your voice and add audio notes to PDFs FILL AND SIGN PDF FORMS - Fill out PDF forms with text fields, checkboxes, and radio buttons - Sign PDF documents in seconds – draw your signature or add it from an image - Save your signature to sign contracts, agreements, invoices, and applications faster - Fill, sign, and send forms right from your iPhone – no printing or scanning needed - Supports all major form formats, including AcroForms and static XFA forms ***PREMIUM FEATURES*** EDIT PDFs - Edit text directly in a PDF – just as you would in a Word document - Add, replace, and resize images in your PDFs - Add links to other pages or websites - Add outlines to navigate large PDFs CREATE AND CONVERT PDFs - Create PDFs from Word files, images, and other documents - Convert Word to PDF, JPG to PDF, and PNG to PDF in seconds - Convert PDF to Word, Excel, PowerPoint, JPG, PNG, and TXT MERGE, SPLIT AND ORGANIZE PDFs - Merge and combine multiple PDF files into one - Split PDFs and extract pages into a new file - Add, delete, rotate, and reorder pages with thumbnail preview COMPRESS PDFs - Compress PDFs to reduce file size for email and sharing - Shrink large PDF files to save space on your device SUMMARIZE PDFs WITH AI – PDF COPILOT - List Main Points – get key takeaways from any PDF - Summarize – get concise summaries of entire PDFs or annotations - Ask Anything – find details with AI answers and references - Explain – get instant explanations of words or phrases PROTECT YOUR FILES - Password-protect PDF Expert - Redact – permanently black out sensitive information WORK WITH SCANNED DOCUMENTS - Open scanned PDFs to fill out, sign, annotate, and share CONSTRUCTION TOOLS - Scale and measure drawings with the Measure tab - Polygon, polyline, and redline tools MORE FEATURES - Customizable toolbar - Presentation Mode - Print and share PDFs via email or cloud ONE ACCOUNT FOR ALL YOUR APPLE DEVICES One Premium subscription covers PDF Expert on iPhone, iPad, and Mac – no need to buy versions separately. Read more about our terms and conditions here: https://pdfexpert.com/privacy https://pdfexpert.com/terms Don’t hesitate to reach out to us at http://readdle.com/contact

About

ClariFlowx

Features
Read full description

Your tasks deserve a home that thinks as fast as you do. ClariFlow is a personal task manager built for modern knowledge workers who want calm design, instant capture, and a Today view that tells you what matters — not just what's due. HOW IT WORKS: 1. Capture any task in plain language — type or dictate, and ClariFlow parses the title, date, time, priority, and tags automatically 2. Open the Today view to see your tasks ranked by an intelligent priority score: overdue items first, then due-today tasks sorted by urgency, project weight, and due-date proximity 3. Process your Inbox with a swipe-based card stack: schedule for Today, assign to a project, defer to Someday, or delete — one gesture each 4. Organize life into Areas (Work, Personal, Learning) and Projects with Headings, Tags, and Checklists 5. Check tasks off from your lock screen or home screen widgets without opening the app KEY FEATURES: • Natural-language capture — type "call dentist next Monday at 9am" and ClariFlow fills every field • Smart Today view with priority scoring — see what actually matters each morning • Inbox processing workflow — swipe through unprocessed tasks like a deck of cards • Area > Project > Heading hierarchy — structured but never rigid • Recurring tasks with flexible rules: daily, weekly, monthly, or after-completion • Tags for cross-project filtering and focus modes • Up to 3 reminders per task: specific time, before due, or location-based • Interactive iOS widgets: check tasks from lock screen and home screen • Dark mode, light mode, and system-follow themes • Local-first storage — all data stays on your device • iCloud sync (opt-in) keeps your tasks safe across devices FOR GTD PRACTITIONERS: ClariFlow ships with a built-in GTD template: Inbox, three starter Areas, and a guided first-capture flow. Go from download to a working system in under 5 minutes. FOR THINGS 3 USERS: Same calm visual quality. Faster capture. Smarter Today view. One-time purchase, no subscription. FOR TODOIST USERS: Drop the monthly bill. Keep the natural language and cross-platform sync. Gain project hierarchy and priority scoring. PRIVACY BY DESIGN: No account required. No cloud dependency. No third-party analytics SDKs. Your tasks are yours. Important: ClariFlow is a productivity and task management tool. It does not provide medical, legal, or financial advice.

Screenshots

PDF Expert4 screens
ClariFlowx4 screens

Verdict

The call

The clearest difference is price: PDF Expert at Free against ClariFlowx's $0.99. PDF Expert also leads on chart position (#74 vs unranked). ClariFlowx's advantage is in-app purchases (none vs 12). On ads, device support and iOS requirement 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

PDF Expert is free to download; ClariFlowx costs $0.99 up front. PDF Expert sells 10 in-app purchases, starting at $9.99 per month. ClariFlowx asks for nothing beyond the download.

Scorecard3 real differences · 8 level
PDF Expert versus ClariFlowx: the parameters behind the verdict, then further details
ParameterPDF ExpertClariFlowx
PriceFree — better$0.99
Rating4.7 (216K ratings) — better—
Positive reviews45.4% of reviews—
Number of ratings216K — better—
Update frequencyFortnightly—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#74 — better—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size295 MB3 MB
Age rating4+4+
DeveloperReaddle Technologies LimitedQuote Lin

Bugs and requests

PDF Expert

Reported bugs

4 issues
  • Corrupted PDFs after editing
  • Sync issues with cloud storage providers
  • Unexpected loss of annotations and edits
  • Unreliable performance on older iPad models

Requested features

5 requests
  • Improved palm rejection for Apple Pencil
  • Customizable toolbar and annotation presets
  • Better integration with other productivity apps
  • More flexible file management and organization
  • Ability to create fillable PDF forms

ClariFlowx

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

PDF Expert

Subscriptions9
  • PDF Expert Premium Trial7 Days trial$9.991 Month
  • PDF Expert Premium No Trial$9.991 Month
  • PDF Expert for Education7 Days trial$39.991 Year
Show 6 more
  • PDF Expert Premium7 Days trial3 variants$49.991 Year
  • PDF Expert Premium New7 Days trial$49.991 Year
  • PDF Expert Premium Existing7 Days trial$49.991 Year
  • PDF Expert – Premium Editing1 Year trial$49.991 Year
  • PDF Expert Mac & iOS Pro7 Days trial$79.991 Year
  • PDF Expert Mac & iOS7 Days trial$79.991 Year
One-time1
  • PDF Expert Basic$9.99
None

ClariFlowx

No in-app purchases

Questions

Is PDF Expert free?
PDF Expert is free to download, with in-app purchases available.
Is ClariFlowx free?
ClariFlowx costs $0.99, with no in-app purchases.
Do PDF Expert or ClariFlowx have ads?
Neither PDF Expert nor ClariFlowx shows ads.

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