# Language Reactor vs Sirius App

The clearest difference is in-app purchases: Sirius App at none against Language Reactor's 13. Sirius App also leads on rating (5.0 vs 4.8) and iOS requirement (11.0 vs 13.0). Language Reactor's advantage is ratings volume (3.7K vs 2) and update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Language Reactor sells 12 in-app purchases, starting at $3.49 per month. Sirius App asks for nothing beyond the download.

Sirius App holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Language Reactor has 3.7K ratings behind it against 2, so its average is the more settled of the two.

Language Reactor ships an update every 3 weeks, Sirius App every 2 months. The most recent releases landed on October 19, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Language Reactor | Sirius App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (3.7K ratings)](https://appshunter.io/ios/app/language-reactor-sounter/id1505600864/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sirius-app/id1509458221/reviews)** |
| Number of ratings | **3.7K** | 2 |
| Positive reviews | 66.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 120 MB | 3 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [David Galarza](https://appshunter.io/developer/1504772812) | [Europol](https://appshunter.io/developer/1509458220) |

## What reviewers say

### Language Reactor

[App page](https://appshunter.io/ios/app/language-reactor-sounter/id1505600864)

Learn languages through the power of music with interactive lessons based on your favorite songs. This app offers real-time lyric exercises, vocabulary building, and progress tracking to make language acquisition engaging and effective. It's an immersive alternative to traditional study methods.

**Highlights:** Personalized music-based courses, Real-time lyric exercises, Offline learning mode, Adaptive difficulty, Vocabulary builder, Progress tracking

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.49 | per month |
| Monthly | $11.99 | per month |
| Biannual | $14.99 | per 6 months |
| Sounter Premium Welcome Offer | $19.99 | per year |
| Annual Subscription | $23.99 | per year |
| Sounter Premium | $24.99 | per year |
| Biannual | $40.49 | per 6 months |
| Biannual | $50.99 | per 6 months |
| Annual Subscription | $59.99 | per year |
| Biannual | $59.99 | per 6 months |
| Annual Subscription | $69.99 | per year |
| Lifetime - Premium | $99.99 | one-time |

**What reviewers like**

- 👍 User-friendly interface
- 🎶 Engaging music-based learning
- 💯 Effective language learning
- 🔥 Excellent app
- 🤩 Fantastic app

**What reviewers complain about**

- 🐛 Technical issues (crashes, bugs, songs not loading)
- 💰 Subscription concerns (hidden fees, difficult to cancel)
- 🇧🇷 Lack of support for certain languages

**Reported bugs**

- Repeated lessons and inability to progress
- Automatic subscription charges without user consent

**Requested features**

- Add writing practice feature
- Improve accent and pronunciation feedback
- Provide more language options


### Sirius App

[App page](https://appshunter.io/ios/app/sirius-app/id1509458221)

Connect with the European Public Prosecutor's Office (EPPO) through this mobile application. Access information and resources related to their work and mission.

**Highlights:** Connect to EPPO, Access information, Resource hub, Official updates

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

**In-app purchases:** none


## Frequently asked questions

### Is Language Reactor free?

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

### Is Sirius App free?

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

### Which has better reviews, Language Reactor or Sirius App?

Sirius App is rated higher. Language Reactor averages 4.8 out of 5 from 3.7K ratings, while Sirius App averages 5.0 from 2 ratings.

### Do Language Reactor or Sirius App have ads?

Neither Language Reactor nor Sirius App shows ads.

### Which is updated more often, Language Reactor or Sirius App?

Language Reactor ships an update every 3 weeks, and Sirius App every 2 months. Most recently, Language Reactor was updated on October 19, 2026 and Sirius App on October 2, 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.*