# KernelHairs vs HRM Labs

The clearest difference is update cadence: KernelHairs at every 3 months against HRM Labs's every 5 months. KernelHairs also leads on iOS requirement (12.0 vs 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.

KernelHairs ships an update every 3 months, HRM Labs every 5 months. The most recent releases landed on October 11, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | KernelHairs | HRM Labs |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Size | 44 MB | 23 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [徐州科诺医疗仪器设备有限公司](https://appshunter.io/developer/1281841881) | [AXNOSIS LTD](https://appshunter.io/developer/1593358420) |

## What reviewers say

### KernelHairs

[App page](https://appshunter.io/ios/app/kernelhairs/id1446514350)

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

**In-app purchases:** none


### HRM Labs

[App page](https://appshunter.io/ios/app/hrm-labs/id1631184176)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KernelHairs free?

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

### Is HRM Labs free?

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

### Do KernelHairs or HRM Labs have ads?

Neither KernelHairs nor HRM Labs shows ads.

### Which is updated more often, KernelHairs or HRM Labs?

KernelHairs ships an update every 3 months, and HRM Labs every 5 months. Most recently, KernelHairs was updated on October 11, 2026 and HRM Labs on October 1, 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.*