# Lumen vs Sentence Forge

The clearest difference is ads: Lumen at none against Sentence Forge's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Lumen sells 2 in-app purchases, starting at $14.99 per month and Sentence Forge sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Lumen ships an update every 10 days, Sentence Forge weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Lumen | Sentence Forge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/lumen-ai-language-tutor/id6785564074/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 44 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Araujo](https://appshunter.io/developer/6785564076) | [Emre Abdullah Yavuz](https://appshunter.io/developer/6789079924) |

## What reviewers say

### Lumen

[App page](https://appshunter.io/ios/app/lumen-ai-language-tutor/id6785564074)

Engage in real-time spoken conversations with an AI tutor to improve language fluency. The app focuses on speaking practice, providing instant feedback and personalized lessons based on your learning goals and level. It offers a unique approach to mastering new languages through interactive dialogue.

**Highlights:** Real-time spoken conversations, AI tutor listens and corrects, Personalized course based on goals, Adaptive level testing, Learn 7 languages, Vocabulary building, Conversation transcripts

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lumen Monthly | $14.99 | per month |
| Lumen 6 Months | $59.99 | per 6 months |


### Sentence Forge

[App page](https://appshunter.io/ios/app/sentence-forge/id6789079922)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |


## Frequently asked questions

### Is Lumen free?

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

### Is Sentence Forge free?

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

### Do Lumen or Sentence Forge have ads?

Sentence Forge shows ads; Lumen does not.

### Which is updated more often, Lumen or Sentence Forge?

Lumen ships an update every 10 days, and Sentence Forge weekly. Most recently, Lumen was updated on October 24, 2026 and Sentence Forge on October 24, 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.*