# Kak vs GrammarStep Russian

The clearest difference is update cadence: Kak at every 3 days against GrammarStep Russian's every 2 months. Kak also leads on iOS requirement (13.0 vs 18.2). 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.

Kak ships an update every 3 days, GrammarStep Russian every 2 months. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Kak | GrammarStep Russian |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 months |
| Size | 86 MB | 54 MB |
| Requires iOS | **13.0** | 18.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [INVALCRE (PRIVATE) LIMITED](https://appshunter.io/developer/1711085137) | [Gregoire Kourdouli](https://appshunter.io/developer/1567092907) |

## What reviewers say

### Kak

[App page](https://appshunter.io/ios/app/kak-learn-russian-language/id6443656825)

**Features:** macOS Compatibility

**In-app purchases:** none


### GrammarStep Russian

[App page](https://appshunter.io/ios/app/grammarstep-russian/id6759071686)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Kak free?

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

### Is GrammarStep Russian free?

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

### Do Kak or GrammarStep Russian have ads?

Neither Kak nor GrammarStep Russian shows ads.

### Which is updated more often, Kak or GrammarStep Russian?

Kak ships an update every 3 days, and GrammarStep Russian every 2 months. Most recently, Kak was updated on October 27, 2026 and GrammarStep Russian on October 31, 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.*