# QuickNotion vs 2sBrain

The clearest difference is ads: 2sBrain at none against QuickNotion's shown. QuickNotion's advantage is update cadence (daily vs weekly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. QuickNotion sells 1 in-app purchase, starting at $0.99 per month and 2sBrain sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

QuickNotion ships an update daily, 2sBrain weekly. The most recent releases landed on September 29, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | QuickNotion | 2sBrain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Weekly |
| Size | 23 MB | 66 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [sanghwa park](https://appshunter.io/developer/1780279080) | [Nguyen Nhu Vuong](https://appshunter.io/developer/1486864462) |

## What reviewers say

### QuickNotion

[App page](https://appshunter.io/ios/app/quicknotion/id6738339117)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Pro | $0.99 | per month |


### 2sBrain

[App page](https://appshunter.io/ios/app/2sbrainai-pdf-document-reader/id6768344372)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP Monthly | $3.99 | per month |
| VIP Yearly | $19.99 | per year |
| VIP Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is QuickNotion free?

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

### Is 2sBrain free?

2sBrain is free to download, with in-app purchases available.

### Do QuickNotion or 2sBrain have ads?

QuickNotion shows ads; 2sBrain does not.

### Which is updated more often, QuickNotion or 2sBrain?

QuickNotion ships an update daily, and 2sBrain weekly. Most recently, QuickNotion was updated on September 29, 2026 and 2sBrain on October 8, 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.*