# Language Reactor vs SubLater

The clearest difference is iOS requirement: Language Reactor at 16.4 against SubLater's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Language Reactor sells 2 in-app purchases, starting at $7.99 per month and SubLater sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Language Reactor ships an update every 4 days, SubLater every 5 days. Both last shipped on November 5, 2026.

## The numbers

| Metric | Language Reactor | SubLater |
| --- | --- | --- |
| 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 | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | Freemium | — |
| Size | 55 MB | 11 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Ilia Furtaev](https://appshunter.io/developer/6777002922) | [Hyun jun Yang](https://appshunter.io/developer/6782118398) |

## What reviewers say

### 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 new words and review them with smart flashcards using spaced repetition. Get AI-powered grammar explanations for better understanding.

**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 |


### SubLater

[App page](https://appshunter.io/ios/app/sublater-hear-it-first/id6810230415)

**Features:** Safari Extension, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SubLater Pro Monthly | $8.99 | per month |
| SubLater Pro Yearly | $49.99 | per year |


## Frequently asked questions

### Is Language Reactor free?

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

### Is SubLater free?

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

### Do Language Reactor or SubLater have ads?

Neither Language Reactor nor SubLater shows ads.

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

Language Reactor ships an update every 4 days, and SubLater every 5 days. Most recently, Language Reactor was updated on November 5, 2026 and SubLater on November 5, 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.*