# Second Brain vs ESGTools GAP Analysis

The clearest difference is in-app purchases: ESGTools GAP Analysis at none against Second Brain's 3. ESGTools GAP Analysis also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Second Brain sells 3 in-app purchases, starting at $5.99 per 7 days. ESGTools GAP Analysis asks for nothing beyond the download.

Second Brain ships an update every 4 weeks, ESGTools GAP Analysis every 3 weeks. The most recent releases landed on September 25, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Second Brain | ESGTools GAP Analysis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (61 ratings)](https://appshunter.io/ios/app/second-brain-ai-chat/id6446254904/reviews)** | — |
| Number of ratings | **61** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | Freemium | — |
| Size | 78 MB | 17 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Tairs Rzajevs](https://appshunter.io/developer/1576119083) | [PROYECTOS Y CONSULTORIA DE INNOVACION TECNOLOGICA S.L.](https://appshunter.io/developer/1663891308) |

## What reviewers say

### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-ai-chat/id6446254904)

This AI chatbot uses GPT technology to generate creative content like stories and songs, answer questions, and provide entertainment. It offers a premium subscription for enhanced features and a free trial period.

**Highlights:** AI-powered writing assistance, Story and song generation, Question answering, Joke telling, GPT technology integration

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium for one Week | $5.99 | per 7 days |
| Premium for one Month | $9.99 | per month |
| Premium for one Year | $39.99 | per year |


### ESGTools GAP Analysis

[App page](https://appshunter.io/ios/app/esgtools-gap-analysis/id6738048556)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Second Brain free?

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

### Is ESGTools GAP Analysis free?

ESGTools GAP Analysis is free to download, with no in-app purchases.

### Do Second Brain or ESGTools GAP Analysis have ads?

Neither Second Brain nor ESGTools GAP Analysis shows ads.

### Which is updated more often, Second Brain or ESGTools GAP Analysis?

Second Brain ships an update every 4 weeks, and ESGTools GAP Analysis every 3 weeks. Most recently, Second Brain was updated on September 25, 2026 and ESGTools GAP Analysis on September 27, 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.*