# MonkuNotes vs Second Brain

The clearest difference is iOS requirement: MonkuNotes at 15.1 against Second Brain's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. MonkuNotes sells 1 in-app purchase, starting at $3.99 per month and Second Brain sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

MonkuNotes ships an update weekly, Second Brain every 5 days. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | MonkuNotes | Second Brain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Size | 102 MB | 55 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Invimatic Technologies Private Limited](https://appshunter.io/developer/1891601144) | [Terra Innovations](https://appshunter.io/developer/1789492814) |

## What reviewers say

### MonkuNotes

[App page](https://appshunter.io/ios/app/monkunotes/id6761810274)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MonkuNotes PRO | $3.99 | per month |


### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-ai-assistant/id6792532203)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $7.99 | per 7 days |
| Monthly | $29.99 | per month |


## Frequently asked questions

### Is MonkuNotes free?

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

### Is Second Brain free?

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

### Do MonkuNotes or Second Brain have ads?

Neither MonkuNotes nor Second Brain shows ads.

### Which is updated more often, MonkuNotes or Second Brain?

MonkuNotes ships an update weekly, and Second Brain every 5 days. Most recently, MonkuNotes was updated on October 10, 2026 and Second Brain on October 15, 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.*