# Kak vs BeFluent

The clearest difference is in-app purchases: Kak at none against BeFluent's 4. Kak also leads on update cadence (every 3 days vs every 2 weeks) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. BeFluent sells 4 in-app purchases, starting at $19.99 per month. Kak asks for nothing beyond the download.

Kak ships an update every 3 days, BeFluent every 2 weeks. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Kak | BeFluent |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (7 ratings)](https://appshunter.io/ios/app/befluent-learn-russian/id6759158682/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | — | Subscription |
| Size | 86 MB | 40 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [INVALCRE (PRIVATE) LIMITED](https://appshunter.io/developer/1711085137) | [BeFluent](https://appshunter.io/developer/1797022962) |

## What reviewers say

### Kak

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

**Features:** macOS Compatibility

**In-app purchases:** none


### BeFluent

[App page](https://appshunter.io/ios/app/befluent-learn-russian/id6759158682)

Master Russian with practical exercises, courses, and vocabulary training. Suitable for all levels, it focuses on real-life situations and confident language use. Learn through engaging tasks and media like movies and TV shows.

**Highlights:** Structured courses, Vocabulary training, Engaging tasks, All levels supported, Learn through media, Real-life situations

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Plan | $19.99 | per month |
| Premium plan | $49.99 | per month |
| Basic Plan for the year | $199.00 | per year |
| Premium Plan for the year | $499.00 | per year |


## Frequently asked questions

### Is Kak free?

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

### Is BeFluent free?

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

### Do Kak or BeFluent have ads?

Neither Kak nor BeFluent shows ads.

### Which is updated more often, Kak or BeFluent?

Kak ships an update every 3 days, and BeFluent every 2 weeks. Most recently, Kak was updated on October 5, 2026 and BeFluent on October 24, 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.*