# Second Brain vs Narrowstack CRM

The clearest difference is in-app purchases: Narrowstack CRM at none against Second Brain's 3. Narrowstack CRM also leads on update cadence (every 2 days vs every 4 weeks). On price, ads, device support 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. Narrowstack CRM asks for nothing beyond the download.

Second Brain ships an update every 4 weeks, Narrowstack CRM every 2 days. The most recent releases landed on October 11, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Second Brain | Narrowstack CRM |
| --- | --- | --- |
| 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 2 days** |
| Monetization | Freemium | — |
| Size | 78 MB | 344 MB |
| Requires iOS | 16.6 | 16.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [Tairs Rzajevs](https://appshunter.io/developer/1576119083) | [Narrowstack LLC](https://appshunter.io/developer/1880496141) |

## 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 |


### Narrowstack CRM

[App page](https://appshunter.io/ios/app/narrowstack-crm/id6759755494)

**Features:** macOS Compatibility, Apple Wallet, 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 Narrowstack CRM free?

Narrowstack CRM is free to download, with no in-app purchases.

### Do Second Brain or Narrowstack CRM have ads?

Neither Second Brain nor Narrowstack CRM shows ads.

### Which is updated more often, Second Brain or Narrowstack CRM?

Second Brain ships an update every 4 weeks, and Narrowstack CRM every 2 days. Most recently, Second Brain was updated on October 11, 2026 and Narrowstack CRM on October 17, 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.*