# Kak vs Lewo

The clearest difference is in-app purchases: Kak at none against Lewo's 2. Kak also leads on iOS requirement (13.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Lewo sells 2 in-app purchases, starting at $5.99 per month. Kak asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Kak | Lewo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | — | Freemium |
| Size | 86 MB | 25 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [INVALCRE (PRIVATE) LIMITED](https://appshunter.io/developer/1711085137) | [UMUT BAYGUT](https://appshunter.io/developer/1343111942) |

## What reviewers say

### Kak

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Lewo

[App page](https://appshunter.io/ios/app/lewo/id6739957605)

Learn languages through AI-powered interactive stories. This app adapts to your skill level, offering tailored vocabulary building and conversational practice with an AI assistant. Enjoy a seamless and personalized learning journey for all levels.

**Highlights:** AI-powered interactive stories, Adaptive learning paths, Contextual vocabulary building, Interactive AI conversation practice, User-friendly interface, Suitable for all skill levels

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $5.99 | per month |
| Premium Annually | $59.99 | per year |


## Frequently asked questions

### Is Kak free?

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

### Is Lewo free?

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

### Do Kak or Lewo have ads?

Neither Kak nor Lewo shows ads.

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

Kak ships an update every 3 days, and Lewo every 3 days. Most recently, Kak was updated on November 7, 2026 and Lewo on November 8, 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.*