# KnowLang vs Jetoo Masters

The clearest difference is in-app purchases: Jetoo Masters at none against KnowLang's 7. Jetoo Masters also leads on update cadence (every 9 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. KnowLang sells 7 in-app purchases, starting at $2.99 per month. Jetoo Masters asks for nothing beyond the download.

KnowLang ships an update monthly, Jetoo Masters every 9 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | KnowLang | Jetoo Masters |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/knowlang/id6444553784/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Freemium | — |
| Size | 20 MB | 68 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Iaroslav Oleinikov](https://appshunter.io/developer/1651604102) | [Bekzhan Mauken](https://appshunter.io/developer/6791816907) |

## What reviewers say

### KnowLang

[App page](https://appshunter.io/ios/app/knowlang/id6444553784)

Master English grammar, vocabulary, and speaking with interactive lessons, games, and dialogues. Track your progress and learn offline with a personalized AI tutor. Access a library of books and a phrasebook for real-life conversations.

**Highlights:** Grammar lessons from A1 to B2, 18,000+ vocabulary words with training modes, Six word games including Duel and Crossword, Speaking practice with pronunciation evaluation, 7 interactive dialogues with an AI tutor, 24 English books with tap-to-translate, Offline access to all content

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KnowLang Pro (1 месяц) | $2.99 | per month |
| KnowLang Pro (6 месяцев) | $9.99 | per 6 months |
| KnowLang Pro (1 год) | $17.99 | per year |
| 15 монет | $0.29 | one-time |
| 60 монет | $0.99 | one-time |
| 140 монет | $1.99 | one-time |
| 300 монет | $2.99 | one-time |


### Jetoo Masters

[App page](https://appshunter.io/ios/app/jetoo-masters/id6757123795)

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

**In-app purchases:** none


## Frequently asked questions

### Is KnowLang free?

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

### Is Jetoo Masters free?

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

### Do KnowLang or Jetoo Masters have ads?

Neither KnowLang nor Jetoo Masters shows ads.

### Which is updated more often, KnowLang or Jetoo Masters?

KnowLang ships an update monthly, and Jetoo Masters every 9 days. Most recently, KnowLang was updated on October 30, 2026 and Jetoo Masters on October 28, 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.*