# PDF Expert vs yandex ai

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.

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.

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.

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.

## The numbers

| Metric | PDF Expert | yandex ai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (217K ratings)](https://appshunter.io/ios/app/pdf-expert-editor-and-reader/id743974925/reviews)** | [4.3 (40 ratings)](https://appshunter.io/ios/app/yandex-ai-chatbot-and-assistant/id6749068146/reviews) |
| Number of ratings | **217K** | 40 |
| Positive reviews | 45.2% of reviews | **60.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | Freemium | **Ad-supported** |
| Best chart rank | **#65** | — |
| Size | 328 MB | 312 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Readdle Technologies Limited](https://appshunter.io/developer/285035419) | [Direct Cursus Computer Systems Trading](https://appshunter.io/developer/1717598015) |

## What reviewers say

### PDF Expert

[App page](https://appshunter.io/ios/app/pdf-expert-editor-and-reader/id743974925)

**Currently charting:** #65 Top Grossing · Productivity, #203 Top Free · Productivity (US App Store)

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:** Vision Pro support, iPhone Duo support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Expert Premium Trial | $9.99 | per month |
| PDF Expert Premium No Trial | $9.99 | per month |
| PDF Expert for Education | $39.99 | per year |
| PDF Expert Premium | $49.99 | per year |
| PDF Expert Premium New | $49.99 | per year |
| PDF Expert Premium Existing | $49.99 | per year |
| PDF Expert – Premium Editing | $49.99 | per year |
| PDF Expert Mac & iOS | $79.99 | per year |
| PDF Expert Basic | $9.99 | one-time |

**What reviewers like**

- 🚀 Fast and responsive
- 👍 Intuitive and user-friendly interface
- 💡 Powerful annotation and editing tools
- 🔒 Seamless cloud integration
- 📚 Excellent for reading and organizing PDFs

**What reviewers complain about**

- 🐛 Frequent crashes and stability issues
- 🔒 Subscription model for advanced features
- 🔒 Inconsistent pricing and feature changes
- 🔍 Cluttered and confusing UI in latest update
- 🔍 Reduced customization options for annotations

**Reported bugs**

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

**Requested features**

- 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

[App page](https://appshunter.io/ios/app/yandex-ai-chatbot-and-assistant/id6749068146)

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:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*