# SIGMA LABS vs Link HR

The clearest difference is device support: Link HR at 2 against SIGMA LABS's —. SIGMA LABS's advantage is iOS requirement (12.2 vs 15.0). On price 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.

## The numbers

| Metric | SIGMA LABS | Link HR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Daily |
| Size | 58 MB | 59 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mohammad Abdalaziz](https://appshunter.io/developer/1744733663) | [LINK BUSINESS SOLUTION](https://appshunter.io/developer/1734085769) |

## What reviewers say

### SIGMA LABS

[App page](https://appshunter.io/ios/app/sigma-labs/id6502237982)

**In-app purchases:** none


### Link HR

[App page](https://appshunter.io/ios/app/link-hr/id6788283312)

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

**In-app purchases:** none


## Frequently asked questions

### Is SIGMA LABS free?

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

### Is Link HR free?

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

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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.*