# KPD vs Ударение

The clearest difference is review sentiment: Ударение at 70% against KPD's 22%. Ударение also leads on ratings volume (106 vs 1) and update cadence (every 5 weeks vs every 5 months). KPD's advantage is ads (none vs shown) and rating (5.0 vs 4.8). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KPD holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Ударение has 106 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 22% of KPD's written reviews are positive against 70% of Ударение's, so the app with the better star average is not the one people write more warmly about.

KPD ships an update every 5 months, Ударение every 5 weeks. The most recent releases landed on August 11, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | KPD | Ударение |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kpd-bio/id1229570219/reviews)** | [4.8 (106 ratings)](https://appshunter.io/ios/app/id1505207299/reviews) |
| Number of ratings | 1 | **106** |
| Positive reviews | 22.2% of reviews | **70.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 5 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 10 MB | 53 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [НОУ МЦНМО](https://appshunter.io/developer/1235476259) | [Artem Sysoev](https://appshunter.io/developer/1699767874) |

## What reviewers say

### KPD

[App page](https://appshunter.io/ios/app/kpd-bio/id1229570219)

This app provides a comprehensive Russian-language electronic version of a leading biology textbook, ideal for high school students and teachers. It includes supplementary materials for practice and scientific article analysis, offering structured learning from basic to advanced concepts.

**Highlights:** Russian electronic textbook, Student Study Guide included, Inquiry in Action guide, University-level biology content, Illustrations and diagrams, Self-check questions and tasks, Electronic glossary search

**Features:** macOS Compatibility

**In-app purchases:** none


### Ударение

[App page](https://appshunter.io/ios/app/id1505207299)

Master Russian word stress for your exams. This app provides a focused approach to learning and remembering correct pronunciation in words, essential for academic success.

**Highlights:** Word stress memorization, Exam preparation tool, Pronunciation practice, Vocabulary building

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is KPD free?

KPD is free to download, with no in-app purchases.

### Is Ударение free?

Ударение is free to download, with no in-app purchases.

### Which has better reviews, KPD or Ударение?

KPD is rated higher. KPD averages 5.0 out of 5 from 1 ratings, while Ударение averages 4.8 from 106 ratings.

### Do KPD or Ударение have ads?

Ударение shows ads; KPD does not.

### Which is updated more often, KPD or Ударение?

KPD ships an update every 5 months, and Ударение every 5 weeks. Most recently, KPD was updated on August 11, 2026 and Ударение on September 25, 2026.

---

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