# Penglai vs Language Reactor

The clearest difference is in-app purchases: Penglai at none against Language Reactor's 2. Penglai also leads on iOS requirement (12.0 vs 16.4). Language Reactor's advantage is update cadence (every 4 days vs every 28 months). On price, ads and device support there is nothing between them.

Both are free to download. Language Reactor sells 2 in-app purchases, starting at $7.99 per month. Penglai asks for nothing beyond the download.

Penglai ships an update every 28 months, Language Reactor every 4 days. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Penglai | Language Reactor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (9 ratings)](https://appshunter.io/ios/app/language-reactor-linglass/id6777002920/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 359 MB | 55 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [JienHua Gu](https://appshunter.io/developer/1417826117) | [Ilia Furtaev](https://appshunter.io/developer/6777002922) |

## What reviewers say

### Penglai

[App page](https://appshunter.io/ios/app/penglai/id1417826118)

**Features:** macOS Compatibility

**In-app purchases:** none


### Language Reactor

[App page](https://appshunter.io/ios/app/language-reactor-linglass/id6777002920)

Learn languages by watching videos with dual subtitles and instant contextual translations. Save words, practice with spaced-repetition flashcards, and get AI-powered grammar explanations. Track your progress and master new languages through engaging content.

**Highlights:** Dual subtitles on YouTube, Contextual word translation and pronunciation, AI grammar explanations with CEFR levels, Spaced-repetition flashcards, Progress tracking with stats and heatmap, Support for multiple languages

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $7.99 | per month |
| Premium (Annual) | $59.99 | per year |


## Frequently asked questions

### Is Penglai free?

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

### Is Language Reactor free?

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

### Do Penglai or Language Reactor have ads?

Neither Penglai nor Language Reactor shows ads.

### Which is updated more often, Penglai or Language Reactor?

Penglai ships an update every 28 months, and Language Reactor every 4 days. Most recently, Penglai was updated on October 26, 2026 and Language Reactor 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.*