# Columbia Protocol VA DOC vs Flow

The clearest difference is iOS requirement: Columbia Protocol VA DOC at 13.0 against Flow's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | Columbia Protocol VA DOC | Flow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 7 MB | 213 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [PSS Chute Software](https://appshunter.io/developer/1019573904) | [Flow Neuroscience AB](https://appshunter.io/developer/1149864190) |

## What reviewers say

### Columbia Protocol VA DOC

[App page](https://appshunter.io/ios/app/columbia-protocol-va-doc/id6504497895)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flow

[App page](https://appshunter.io/ios/app/flow-depression-treatment/id6779138994)

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

**In-app purchases:** none


## Frequently asked questions

### Is Columbia Protocol VA DOC free?

Columbia Protocol VA DOC is free to download, with no in-app purchases.

### Is Flow free?

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

### Do Columbia Protocol VA DOC or Flow have ads?

Neither Columbia Protocol VA DOC nor Flow shows ads.

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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.*