# Ударения vs KPD

The clearest difference is review sentiment: Ударения at 94% against KPD's 22%. Ударения also leads on update cadence (weekly vs every 5 months). On price, ads, in-app purchases and device support there is nothing between them.

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

Ударения ships an update weekly, KPD every 5 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Ударения | KPD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (23 ratings)](https://appshunter.io/ios/app/id959350438/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | **94.3% of reviews** | 22.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 months |
| Monetization | — | Free |
| Size | 48 MB | 10 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Arthur Sudarikov](https://appshunter.io/developer/959350437) | [НОУ МЦНМО](https://appshunter.io/developer/1235476259) |

## What reviewers say

### Ударения

[App page](https://appshunter.io/ios/app/id959350438)

This orthoepic dictionary provides access to over 150 thousand words of modern Russian language, offering pronunciation guidance, usage examples, and offline functionality to help users improve their speech and language skills. Ideal for professionals, students, and learners of Russian, it helps master correct pronunciation and accent, making it an essential tool for effective communication.

**Features:** iPhone Duo support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Ударения free?

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

### Is KPD free?

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

### Do Ударения or KPD have ads?

Neither Ударения nor KPD shows ads.

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

Ударения ships an update weekly, and KPD every 5 months. Most recently, Ударения was updated on November 6, 2026 and KPD on November 2, 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.*