PDF Expert vs Quby
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Expert
Edit, annotate, convert, and sign PDF documents with this comprehensive tool. Features include AI-powered summarization, file merging, compression, and secure password protection. Available across Apple devices for seamless workflow.
- Read, annotate, and mark up PDFs
- Fill and sign PDF forms
- Edit text and images in PDFs
- Convert files to and from PDF
- Merge, split, and compress documents
- AI-powered summarization and Q&A
- Password protection and redaction
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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
Quby
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Quby - Your All-in-One QR Code buddy Meet Quby, the beautifully designed QR code app that makes scanning and creating QR codes effortlessly simple. Whether you need to quickly scan a menu, share contact information, or create custom QR codes for any purpose, Quby has you covered with powerful features wrapped in an intuitive interface. SCAN ANYTHING, INSTANTLY Point your camera at any QR code and Quby recognizes it in milliseconds. Get instant results with smart parsing that automatically detects what type of information is encoded — whether it's a website, contact details, or a message. • Lightning-fast camera scanning • Import QR codes from your photo library • Intelligent QR code detection and parsing • Flashlight for scanning in low light • Switch between front and back cameras CREATE CUSTOM QR CODES Generate professional QR codes in seconds for any type of content. Perfect for sharing Wi-Fi passwords, business cards, event links, and more. • Plain text - Share notes, passwords, or any text • Website URLs - Direct links to any webpage • Email - Pre-filled recipient, subject, and message • SMS - Phone number with optional message text • Phone numbers - One-tap calling • WhatsApp - Direct WhatsApp chat links SMART ACTIONS Quby doesn't just show you information — it helps you act on it immediately. Every scanned or created QR code comes with context-aware actions: • Tap to open URLs in your browser • Launch email app with pre-filled content • Send SMS messages instantly • Make phone calls with one tap • Start WhatsApp conversations • Copy text to clipboard • Share QR code images with anyone COMPLETE HISTORY Never lose a scan again. Quby automatically saves every QR code you scan or create, so you can revisit them anytime. • Automatic history tracking • Filter by scanned or generated codes • Search through past scans • Re-share saved QR codes as images • Delete individual items or clear all history • Toggle auto-save in settings BEAUTIFUL DESIGN Quby features a clean, modern interface that feels right at home on your device. • Light and dark themes • Automatic theme based on system settings • Smooth animations and transitions • Intuitive navigation • Optional haptic feedback PRIVACY FIRST Your privacy matters. All QR code processing happens directly on your device — nothing is uploaded to external servers. Camera access is only used for scanning, and you maintain complete control over your data. ADDITIONAL FEATURES • Onboarding guide for new users • Customizable settings for personalization • Haptic feedback toggle • Share QR codes as high-quality images • Export and share with any app • Offline functionality - no internet required • Fast and lightweight app • Regular updates and improvements WHY CHOOSE QUBY? While other QR apps are cluttered with ads and confusing interfaces, Quby focuses on what matters: speed, simplicity, and reliability. Whether you're a casual user who occasionally scans restaurant menus or a power user who generates QR codes daily, Quby adapts to your needs. Perfect for: • Business professionals sharing contact info • Event organizers distributing links • Restaurants and cafes with digital menus • Anyone who values speed and simplicity GET STARTED TODAY Download Quby now and experience the easiest way to scan and create QR codes. Join thousands of users who trust Quby for their daily QR code needs.
Screenshots
Verdict
The clearest difference is in-app purchases: Quby at none against PDF Expert's 10. PDF Expert's advantage is chart position (#70 vs unranked). On price, 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
Both are free to download. PDF Expert sells 9 in-app purchases, starting at $9.99 per month. Quby asks for nothing beyond the download.
| Parameter | PDF Expert | Quby |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (217K ratings) — better | — |
| Positive reviews | 45.2% of reviews | — |
| Number of ratings | 217K — better | — |
| Update frequency | Fortnightly | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Best chart rank | #70 — better | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 328 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Readdle Technologies Limited | Damir Rama |
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
Quby
Not enough reviews yet to summarise bugs or requests.
In-app purchases
PDF Expert
- 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
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- PDF Expert Premium7 Days trial2 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 & iOS7 Days trial$79.991 Year
- PDF Expert Basic$9.99
Quby
No in-app purchases









