# Emma vs Cobalt

The clearest difference is ads: Cobalt at none against Emma's shown. Cobalt also leads on review sentiment (100% vs 80%). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Emma sells 39 in-app purchases, starting at $8.99 per 7 days and Cobalt sells 13 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 27, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Emma | Cobalt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (4K ratings)](https://appshunter.io/ios/app/emma-learn-languages/id6737470910/reviews)** | — |
| Number of ratings | **4K** | — |
| Positive reviews | 79.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | Weekly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 231 MB | 132 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Edailabs](https://appshunter.io/developer/1723846634) | [Theo Rousseau](https://appshunter.io/developer/1814683681) |

## What reviewers say

### Emma

[App page](https://appshunter.io/ios/app/emma-learn-languages/id6737470910)

This app offers a realistic AI tutor for language learning. It provides personalized onboarding, interactive dialogues for real-world scenarios, and rewards to keep users motivated. Explore diverse topics and levels to achieve language proficiency.

**Highlights:** AI language tutor, Personalized onboarding, Interactive dialogues, Real-world scenarios, Badge rewards, Diverse content topics

**Features:** Vision Pro support

**In-app purchases (39)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan Weekly | $8.99 | per 7 days |
| Premium 1 Month | $8.99 | per month |
| Premium 1 Month | $9.99 | per month |
| Premium 3 Months - 50% Off | $11.99 | per 3 months |
| Pro Plan Weekly | $14.99 | per 7 days |
| Pro Plan Monthly | $17.99 | per month |
| Pro Plan Monthly | $17.99 | per month |
| Premium 1 Month | $17.99 | per month |
| Pro Plan Monthly | $19.99 | per month |
| Premium 3 Months - 7d trial | $22.99 | per 3 months |
| Premium 3 Months - 50% offer | $22.99 | per 3 months |
| Pro Plan Quarterly | $24.99 | per 3 months |
| Premium 1 Month | $24.99 | per month |
| Premium 3 Months - 3d trial | $29.99 | per 3 months |
| Pro Plan Quarterly | $34.99 | per 3 months |
| Premium 3 Months | $34.99 | per 3 months |
| Premium 1 Month | $34.99 | per month |
| Pro Plan Quarterly | $44.99 | per 3 months |
| Pro Plan 3 Months | $47.99 | per 3 months |
| Premium 3 Months | $47.99 | per 3 months |
| Pro Plan Annualy | $49.99 | per year |
| Premium 1 Year | $59.99 | per year |
| Premium 1 Year | $69.99 | per year |
| Premium 3 Months | $69.99 | per 3 months |
| Pro Plan Yearly | $79.99 | per year |
| Pro Plan Yearly | $84.99 | per year |
| Pro Plan Yearly | $89.99 | per year |
| Premium 3 Months | $89.99 | per 3 months |
| Premium 1 Year | $95.99 | per year |
| Pro Plan Annually | $99.00 | per year |
| Pro Plan Annually | $99.99 | per year |
| Premium 1 Year | $99.99 | per year |
| Premium 1 Year | $99.99 | per year |
| Premium 3 Months | $99.99 | per 3 months |
| Premium 1 Year | $129.99 | per year |
| Pro Plan Yearly | $149.99 | per year |
| Premium 1 Year | $149.99 | per year |
| Premium 1 Year | $149.99 | per year |
| Premium 1 Year | $169.99 | per year |

**What reviewers like**

- 🚀 Super fast learning
- 👍 Intuitive and interactive
- 🤗 Encouraging and helpful AI
- 💯 Effective for improving pronunciation
- 🎉 Enjoyable and fun to use

**What reviewers complain about**

- 💰 Requires paid subscription after initial free trial
- 🚫 Limited free content
- 🤔 Rigid response expectations
- 🕰️ Slow AI response times
- 🔇 Lack of ability to review/replay lessons

**Reported bugs**

- Freezing or crashing during lessons
- Inconsistent speech recognition
- Inability to advance to next lesson levels

**Requested features**

- More language options
- Ability to switch between languages
- More detailed grammar and vocabulary explanations
- Progress tracking and performance analytics
- Offline mode for lessons


### Cobalt

[App page](https://appshunter.io/ios/app/cobalt-book-summaries/id6746136038)

This app transforms global bestsellers into concise 5, 10, or 15-minute summaries. It uses AI to customize summaries based on your preferences, offering actionable, scientific, or key takeaway formats. Access an elite library of over 300 titles across business, psychology, and biographies, with offline reading capabilities.

**Highlights:** Custom AI summaries, Actionable, Scientific, Key Takeaways formats, Elite library of 300+ titles, Business, Psychology, Biography categories, Offline reading mode, Reduced eye strain interface

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Abonnement Mensuel (-40%) | $2.99 | per month |
| Weekly Premium subscription. | $3.99 | per 7 days |
| Cobalt Abonnement Mensuel | $4.99 | per month |
| Abonnement Annuel (-40%) | $29.99 | per year |
| Cobalt Abonnement Annuel | $49.99 | per year |
| Influence & Communication | $3.99 | one-time |
| Parcours Vitalité & Santé | $3.99 | one-time |
| Moment Présent | $3.99 | one-time |
| Sport & Performance | $3.99 | one-time |
| Mindset & Psychologie | $3.99 | one-time |
| Entrepreneuriat & Business | $3.99 | one-time |
| Pack Complet - Tous Parcours | $22.99 | one-time |
| Cobalt Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Emma free?

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

### Is Cobalt free?

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

### Do Emma or Cobalt have ads?

Emma shows ads; Cobalt does not.

### Which is updated more often, Emma or Cobalt?

Emma ships an update weekly, and Cobalt weekly. Most recently, Emma was updated on October 27, 2026 and Cobalt on October 8, 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.*