# Clarity AI vs SecondBrain AI Assistant

The clearest difference is update cadence: SecondBrain AI Assistant at daily against Clarity AI's every 3 weeks. SecondBrain AI Assistant also leads on iOS requirement (15.0 vs 17.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Clarity AI sells 4 in-app purchases, starting at $5.99 per 7 days and SecondBrain AI Assistant sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Clarity AI ships an update every 3 weeks, SecondBrain AI Assistant daily. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Clarity AI | SecondBrain AI Assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Size | 10 MB | 23 MB |
| Requires iOS | 17.2 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Khoa Le Duy](https://appshunter.io/developer/1802619388) | [BUILD TO CONNECT LTD](https://appshunter.io/developer/6778076361) |

## What reviewers say

### Clarity AI

[App page](https://appshunter.io/ios/app/clarity-ai-adhd-brain-dump/id6763340386)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clarity Premium Weekly | $5.99 | per 7 days |
| Clarity Premium Monthly | $7.99 | per month |
| Clarity Premium Yearly | $39.99 | per year |
| Lifetime | $69.99 | one-time |


### SecondBrain AI Assistant

[App page](https://appshunter.io/ios/app/secondbrain-ai-assistant/id6778076359)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Second Brain Pro Monthly | $9.99 | per month |
| Second Brain Pro Annual | $69.99 | per year |


## Frequently asked questions

### Is Clarity AI free?

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

### Is SecondBrain AI Assistant free?

SecondBrain AI Assistant is free to download, with in-app purchases available.

### Do Clarity AI or SecondBrain AI Assistant have ads?

Neither Clarity AI nor SecondBrain AI Assistant shows ads.

### Which is updated more often, Clarity AI or SecondBrain AI Assistant?

Clarity AI ships an update every 3 weeks, and SecondBrain AI Assistant daily. Most recently, Clarity AI was updated on October 25, 2026 and SecondBrain AI Assistant on October 28, 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.*