# Cobalt vs Sequencer 02

The clearest difference is in-app purchases: Sequencer 02 at none against Cobalt's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Cobalt sells 10 in-app purchases, starting at $2.99 per month. Sequencer 02 asks for nothing beyond the download.

Cobalt ships an update weekly, Sequencer 02 every 6 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Cobalt | Sequencer 02 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 132 MB | 18 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [Theo Rousseau](https://appshunter.io/developer/1814683681) | [Francois Fouqueau](https://appshunter.io/developer/1892826517) |

## What reviewers say

### 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 (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Abonnement Mensuel (-40%) | $2.99 | per month |
| Weekly Premium subscription. | $3.99 | per 7 days |
| Abonnement Annuel (-40%) | $29.99 | per year |
| 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 |


### Sequencer 02

[App page](https://appshunter.io/ios/app/sequencer-02/id6791747186)

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

**In-app purchases:** none


## Frequently asked questions

### Is Cobalt free?

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

### Is Sequencer 02 free?

Sequencer 02 is free to download, with no in-app purchases.

### Do Cobalt or Sequencer 02 have ads?

Neither Cobalt nor Sequencer 02 shows ads.

### Which is updated more often, Cobalt or Sequencer 02?

Cobalt ships an update weekly, and Sequencer 02 every 6 days. Most recently, Cobalt was updated on October 30, 2026 and Sequencer 02 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.*