# Kolabi vs Second AI Brain

The clearest difference is in-app purchases: Kolabi at none against Second AI Brain's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Second AI Brain sells 2 in-app purchases, starting at $2.49 per month. Kolabi asks for nothing beyond the download.

Kolabi ships an update every 5 days, Second AI Brain every 3 days. The most recent releases landed on November 5, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Kolabi | Second AI Brain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Size | 52 MB | 10 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Azamat Zarkeshev](https://appshunter.io/developer/1887105411) | [曜郡 刘](https://appshunter.io/developer/6799808062) |

## What reviewers say

### Kolabi

[App page](https://appshunter.io/ios/app/kolabi/id6760977115)

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

**In-app purchases:** none


### Second AI Brain

[App page](https://appshunter.io/ios/app/second-ai-brain/id6803160108)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hosted AI Monthly | $2.49 | per month |
| Hosted AI Quarterly | $6.49 | per 3 months |


## Frequently asked questions

### Is Kolabi free?

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

### Is Second AI Brain free?

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

### Do Kolabi or Second AI Brain have ads?

Neither Kolabi nor Second AI Brain shows ads.

### Which is updated more often, Kolabi or Second AI Brain?

Kolabi ships an update every 5 days, and Second AI Brain every 3 days. Most recently, Kolabi was updated on November 5, 2026 and Second AI Brain on November 7, 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.*