# Bootstrap Russian Grammar vs Kak

The clearest difference is in-app purchases: Kak at none against Bootstrap Russian Grammar's 1. Kak also leads on update cadence (every 3 days vs weekly). Bootstrap Russian Grammar's advantage is iOS requirement (11.4 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Bootstrap Russian Grammar sells 1 one-off in-app purchase. Kak asks for nothing beyond the download.

Bootstrap Russian Grammar ships an update weekly, Kak every 3 days. The most recent releases landed on July 5, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Bootstrap Russian Grammar | Kak |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (9 ratings)](https://appshunter.io/ios/app/bootstrap-russian-grammar/id1620305043/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 86 MB |
| Requires iOS | **11.4** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Declan Software](https://appshunter.io/developer/932750266) | [INVALCRE (PRIVATE) LIMITED](https://appshunter.io/developer/1711085137) |

## What reviewers say

### Bootstrap Russian Grammar

[App page](https://appshunter.io/ios/app/bootstrap-russian-grammar/id1620305043)

Master Russian grammar with a structured, step-by-step approach. This app offers clear explanations, thousands of audio examples, and interactive exercises to build confidence and fluency. It complements a companion book for a comprehensive learning experience.

**Highlights:** 200 grammar topics, 3000+ audio examples, Step-by-step learning, Interactive exercises, Personal study list, Companion book integration

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Russian Grammar | $34.99 | one-time |


### Kak

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bootstrap Russian Grammar free?

Bootstrap Russian Grammar is free to download, with in-app purchases available.

### Is Kak free?

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

### Do Bootstrap Russian Grammar or Kak have ads?

Neither Bootstrap Russian Grammar nor Kak shows ads.

### Which is updated more often, Bootstrap Russian Grammar or Kak?

Bootstrap Russian Grammar ships an update weekly, and Kak every 3 days. Most recently, Bootstrap Russian Grammar was updated on July 5, 2026 and Kak on September 18, 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.*