# Экогид vs KPD

The clearest difference is review sentiment: Экогид at 73% against KPD's 22%. Экогид also leads on update cadence (every 3 weeks vs every 5 months) and iOS requirement (12.0 vs 16.0). KPD's advantage is in-app purchases (none vs 2). On price, ads and device support there is nothing between them.

Both are free to download. Экогид sells 2 in-app purchases, starting at $0.49 per month. KPD asks for nothing beyond the download.

Экогид ships an update every 3 weeks, KPD every 5 months. The most recent releases landed on November 4, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Экогид | KPD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id1177615090/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **73.1% of reviews** | 22.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 107 MB | 10 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Ecosystema](https://appshunter.io/developer/432942568) | [НОУ МЦНМО](https://appshunter.io/developer/1235476259) |

## What reviewers say

### Экогид

[App page](https://appshunter.io/ios/app/id1177615090)

This app is a field guide and identification tool for common birds in Russia. It features detailed information on 206 species, including photos, descriptions, and sounds. Users can identify birds, track observations, and learn about avian biology and ecology.

**Highlights:** Bird identification tool, Extensive bird atlas with photos and descriptions, Bird sound recordings, Systematic classification of birds, Educational guide to bird biology, Observation diary for bird watchers, Bird quiz

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Птицы: все функции на месяц | $0.49 | per month |
| Птицы: все функции навсегда | $4.99 | one-time |


### 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 Экогид free?

Экогид is free to download, with in-app purchases available.

### Is KPD free?

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

### Do Экогид or KPD have ads?

Neither Экогид nor KPD shows ads.

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

Экогид ships an update every 3 weeks, and KPD every 5 months. Most recently, Экогид was updated on November 4, 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.*