# Chemo Brain Cognitive Research vs Start North

The clearest difference is iOS requirement: Start North at 11.0 against Chemo Brain Cognitive Research's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Chemo Brain Cognitive Research ships an update every 3 months, Start North every 4 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Chemo Brain Cognitive Research | Start North |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Size | 302 MB | 11 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CogniFit](https://appshunter.io/developer/528285613) | [Softtech, Incorporated.](https://appshunter.io/developer/994593098) |

## What reviewers say

### Chemo Brain Cognitive Research

[App page](https://appshunter.io/ios/app/chemo-brain-cognitive-research/id1412024302)

**In-app purchases:** none


### Start North

[App page](https://appshunter.io/ios/app/start-north/id1573160321)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chemo Brain Cognitive Research free?

Chemo Brain Cognitive Research is free to download, with no in-app purchases.

### Is Start North free?

Start North is free to download, with no in-app purchases.

### Do Chemo Brain Cognitive Research or Start North have ads?

Neither Chemo Brain Cognitive Research nor Start North shows ads.

### Which is updated more often, Chemo Brain Cognitive Research or Start North?

Chemo Brain Cognitive Research ships an update every 3 months, and Start North every 4 months. Most recently, Chemo Brain Cognitive Research was updated on November 6, 2026 and Start North on November 7, 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.*