# CipherNote Pro vs SecondBrain AI Assistant

The clearest difference is iOS requirement: SecondBrain AI Assistant at 15.0 against CipherNote Pro's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. CipherNote Pro sells 3 in-app purchases, starting at $4.99 per month and SecondBrain AI Assistant sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

CipherNote Pro ships an update every 3 days, SecondBrain AI Assistant daily. The most recent releases landed on November 9, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | CipherNote Pro | SecondBrain AI Assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Size | 3 MB | 24 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ismail Balci](https://appshunter.io/developer/1877089265) | [BUILD TO CONNECT LTD](https://appshunter.io/developer/6778076361) |

## What reviewers say

### CipherNote Pro

[App page](https://appshunter.io/ios/app/ciphernote-pro/id6759157831)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $4.99 | per month |
| Yearly Pro | $39.99 | per year |
| CipherNote Pro Premium | $144.99 | 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 | $5.99 | per month |
| Second Brain Pro Annual | $49.99 | per year |


## Frequently asked questions

### Is CipherNote Pro free?

CipherNote Pro 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 CipherNote Pro or SecondBrain AI Assistant have ads?

Neither CipherNote Pro nor SecondBrain AI Assistant shows ads.

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

CipherNote Pro ships an update every 3 days, and SecondBrain AI Assistant daily. Most recently, CipherNote Pro was updated on November 9, 2026 and SecondBrain AI Assistant on November 11, 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.*