# Second Brain Link vs QV.AC

Second Brain Link and QV.AC are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | Second Brain Link | QV.AC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 51 MB | 245 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adrian Vicovan](https://appshunter.io/developer/6790683158) | [Tether Data](https://appshunter.io/developer/1841901002) |

## What reviewers say

### Second Brain Link

[App page](https://appshunter.io/ios/app/second-brain-link/id6790683156)

**In-app purchases:** none


### QV.AC

[App page](https://appshunter.io/ios/app/qvac/id6796623527)

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

**In-app purchases:** none


## Frequently asked questions

### Is Second Brain Link free?

Second Brain Link is free to download, with no in-app purchases.

### Is QV.AC free?

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

### Do Second Brain Link or QV.AC have ads?

Neither Second Brain Link nor QV.AC 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.*