# KernelHairs vs SmartDose

The clearest difference is update cadence: KernelHairs at every 3 months against SmartDose's every 8 months. 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, SmartDose every 8 months. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | KernelHairs | SmartDose |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 8 months |
| Size | 44 MB | 74 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [徐州科诺医疗仪器设备有限公司](https://appshunter.io/developer/1281841881) | [Sayed Hashim](https://appshunter.io/developer/1688667048) |

## What reviewers say

### KernelHairs

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

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

**In-app purchases:** none


### SmartDose

[App page](https://appshunter.io/ios/app/smartdose/id6474134451)

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

**In-app purchases:** none


## Frequently asked questions

### Is KernelHairs free?

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

### Is SmartDose free?

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

### Do KernelHairs or SmartDose have ads?

Neither KernelHairs nor SmartDose shows ads.

### Which is updated more often, KernelHairs or SmartDose?

KernelHairs ships an update every 3 months, and SmartDose every 8 months. Most recently, KernelHairs was updated on October 11, 2026 and SmartDose on October 4, 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.*