# Изучение природы vs Вероятности

The clearest difference is iOS requirement: Вероятности at 11.0 against Изучение природы's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Изучение природы sells 4 one-off in-app purchases and Вероятности sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Изучение природы ships an update every 6 days, Вероятности every 8 days. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Изучение природы | Вероятности |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 98.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 8 days |
| Size | 74 MB | 43 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Ecosystema](https://appshunter.io/developer/432942568) | [Alena Sakharova](https://appshunter.io/developer/1607864944) |

## What reviewers say

### Изучение природы

[App page](https://appshunter.io/ios/app/id1441432969)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Изучение природы | $0.99 | one-time |
| Изучение природы | $4.99 | one-time |
| Изучение природы | $7.99 | one-time |
| Изучение природы | $9.99 | one-time |


### Вероятности

[App page](https://appshunter.io/ios/app/id1608366283)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Курс Вероятности | $249.99 | one-time |


## Frequently asked questions

### Is Изучение природы free?

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

### Is Вероятности free?

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

### Do Изучение природы or Вероятности have ads?

Neither Изучение природы nor Вероятности shows ads.

### Which is updated more often, Изучение природы or Вероятности?

Изучение природы ships an update every 6 days, and Вероятности every 8 days. Most recently, Изучение природы was updated on November 4, 2026 and Вероятности 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.*