# OktoNote vs CORTEX_

The clearest difference is iOS requirement: OktoNote at 15.1 against CORTEX_'s 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. OktoNote sells 3 in-app purchases, starting at $3.99 per 7 days and CORTEX_ sells 4 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

OktoNote ships an update every 4 days, CORTEX_ weekly. The most recent releases landed on October 7, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | OktoNote | CORTEX_ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Weekly |
| Size | 54 MB | 336 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thinslate labs, LLC](https://appshunter.io/developer/1832244289) | [George Bayze](https://appshunter.io/developer/1884716979) |

## What reviewers say

### OktoNote

[App page](https://appshunter.io/ios/app/oktonote/id6749813362)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OktoNote Premium Weekly | $3.99 | per 7 days |
| OktoNote Premium Monthly | $4.99 | per month |
| OktoNote Premium Annual | $39.99 | per year |


### CORTEX_

[App page](https://appshunter.io/ios/app/cortex/id6788205210)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CORTEX Pro | $19.99 | per month |
| CORTEX Operator | $59.00 | per month |
| CORTEX Pro (Yearly) | $199.99 | per year |
| CORTEX Operator (Yearly) | $499.99 | per year |


## Frequently asked questions

### Is OktoNote free?

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

### Is CORTEX_ free?

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

### Do OktoNote or CORTEX_ have ads?

Neither OktoNote nor CORTEX_ shows ads.

### Which is updated more often, OktoNote or CORTEX_?

OktoNote ships an update every 4 days, and CORTEX_ weekly. Most recently, OktoNote was updated on October 7, 2026 and CORTEX_ on October 19, 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.*