# Notes from book vs CogniAtlas

The clearest difference is update cadence: Notes from book at every 9 days against CogniAtlas's every 4 weeks. CogniAtlas's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Notes from book sells 2 in-app purchases, starting at $7.99 per 7 days and CogniAtlas sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Notes from book ships an update every 9 days, CogniAtlas every 4 weeks. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Notes from book | CogniAtlas |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 4 weeks |
| Size | 29 MB | 49 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, Mac | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hrvoje Vukovic](https://appshunter.io/developer/1706382198) | [Fx group](https://appshunter.io/developer/1804549178) |

## What reviewers say

### Notes from book

[App page](https://appshunter.io/ios/app/notes-from-book-noteillum/id6747752951)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week subscription | $7.99 | per 7 days |
| Annual subscription | $24.99 | per year |


### CogniAtlas

[App page](https://appshunter.io/ios/app/cogniatlas/id6799561195)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CogniAtlas Pro | $4.99 | per month |
| CogniAtlas Pro | $39.99 | per year |


## Frequently asked questions

### Is Notes from book free?

Notes from book is free to download, with in-app purchases available.

### Is CogniAtlas free?

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

### Do Notes from book or CogniAtlas have ads?

Neither Notes from book nor CogniAtlas shows ads.

### Which is updated more often, Notes from book or CogniAtlas?

Notes from book ships an update every 9 days, and CogniAtlas every 4 weeks. Most recently, Notes from book was updated on October 11, 2026 and CogniAtlas on October 24, 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.*