Comparison

PDF Expert vs yandex ai

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

Head to head
About

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.

Highlights
  • 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
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

yandex ai

This app combines AI chat with advanced search to provide instant answers and solutions. Generate images, browse the web, and manage daily tasks with a single, intelligent assistant. It's designed to simplify your internet use and boost productivity.

Highlights
  • AI-powered chat and search
  • Text, voice, and image input
  • Image and video generation
  • Integrated web browser
  • Daily task management
  • Learning and planning support
Features
Read full description

ONE APP FOR EVERYDAY TASKS Experience a new, simpler way to use the internet: search, browse, or chat with AI... all in one app. It is built to empower you and boost your confidence. Learn faster, create with ease, and handle your daily tasks without the stress. No switching apps, no clutter, no overthinking. You have one single search tool for all your questions: ask Yandex AI, and the chat either generates the most relevant up to date answer or fetches fresh information from the web. Whatever you're trying to learn, plan, or solve, Yandex AI understands your intention and brings you exactly what you need, moving you a little closer to the person you want to become. AI CHAT & ADVANCED SEARCH The app combines AI chat with advanced search to turn information into real solutions instantly. You can ask questions through text, voice, or images and get summaries, comparisons, analyses, and learning support at any level. Responses come enriched with visuals, tables, charts, links, and real-time data from the web. You can get instant image analysis, and reach the most relevant answer faster. Yandex AI is specially adapted for Türkiye. IMAGE AND VIDEO GENERATOR Bring your ideas to life with powerful visual tools. Create images, graphics, and personalized visuals for projects, social media, or fun experiments. Animate photos or apply video styles to make your static images feel alive. Everything is generated inside the app and ready for you to use instantly. BROWSER Enjoy seamless browsing directly inside the app. Analyze opened websites with AI tools, open tabs from chat, follow links instantly, and search the web without switching to an external browser. Everything you need for navigation and quick fact-checking is built in. YOUR EVERYDAY ARTIFICIAL INTELLIGENCE ASSISTANT Use Yandex AI every day to make your decisions easier across all parts of your life. Manage your school and learning tasks better with step-by-step solutions and AI-generated courses on any topics. Stay informed about health, well being, finance and daily essentials like news digests, currency rates, and reminders. Discover what to watch, learn where to go, and explore restaurants or places with suggestions based on real data from the web. Plan trips with hotel ideas, flight options, and maps, all inside the app. Whether you are working on your career, managing relationships, improving habits, or simply trying something new, Yandex AI helps you find the right answers quickly and turn them into action.

Screenshots

PDF Expert4 screens
yandex ai4 screens

Verdict

The call

The clearest difference is in-app purchases: yandex ai at none against PDF Expert's 10. yandex ai also leads on review sentiment (60% vs 45%). PDF Expert's advantage is ads (none vs shown) and rating (4.7 vs 4.3). On price, update cadence, 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

Both are free to download. PDF Expert sells 9 in-app purchases, starting at $9.99 per month. yandex ai asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

PDF Expert holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: PDF Expert has 217K ratings behind it against 40, so its average is the more settled of the two. Written reviews complicate that: 45% of PDF Expert's written reviews are positive against 60% of yandex ai's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

PDF Expert ships an update fortnightly, yandex ai every 2 weeks. The most recent releases landed on November 12, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 4 level
PDF Expert versus yandex ai: the parameters behind the verdict, then further details
ParameterPDF Expertyandex ai
PriceFreeFree
Rating4.7 (217K ratings) — better4.3 (40 ratings)
Positive reviews45.2% of reviews60.0% of reviews — better
Number of ratings217K — better40
Update frequencyFortnightlyEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFreemiumAd-supported — better
Best chart rank#67 — better—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.016.0
Further details — not scored
Size328 MB312 MB
Age rating4+17+
DeveloperReaddle Technologies LimitedDirect Cursus Computer Systems Trading

Customer experience

PDF Expert

All ratings216,576 ratings
Positive92.4%
Neutral2.3%
Negative5.3%
Written reviews1,186 reviews
Positive45.2%
Neutral7.5%
Negative47.3%

yandex ai

All ratings40 ratings
Positive77.5%
Neutral10.0%
Negative12.5%
Written reviews10 reviews
Positive60.0%
Neutral10.0%
Negative30.0%

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

yandex ai

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

PDF Expert

Subscriptions8
  • 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 5 more
  • 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
One-time1
  • PDF Expert Basic$9.99
None

yandex ai

No in-app purchases

Questions

Is PDF Expert free?
PDF Expert is free to download, with in-app purchases available.
Is yandex ai free?
yandex ai is free to download, with no in-app purchases.
Which has better reviews, PDF Expert or yandex ai?
PDF Expert is rated higher. PDF Expert averages 4.7 out of 5 from 217K ratings, while yandex ai averages 4.3 from 40 ratings.
Do PDF Expert or yandex ai have ads?
yandex ai shows ads; PDF Expert does not.
Which is updated more often, PDF Expert or yandex ai?
PDF Expert ships an update fortnightly, and yandex ai every 2 weeks. Most recently, PDF Expert was updated on November 12, 2026 and yandex ai on November 3, 2026.

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