# Sindromes vs KernelHairs

The clearest difference is update cadence: KernelHairs at every 3 months against Sindromes's every 15 months. Sindromes's advantage is iOS requirement (8.0 vs 12.0). 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.

Sindromes ships an update every 15 months, KernelHairs every 3 months. The most recent releases landed on October 10, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Sindromes | KernelHairs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sindromes/id1054580859/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 396 MB | 44 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Albert Roig](https://appshunter.io/developer/1054580858) | [徐州科诺医疗仪器设备有限公司](https://appshunter.io/developer/1281841881) |

## What reviewers say

### Sindromes

[App page](https://appshunter.io/ios/app/sindromes/id1054580859)

This medical reference app provides detailed information on 117 rare and less common diseases. It includes historical data, concepts, incidence, etiology, diagnosis, clinical features, treatment, and references, along with a gallery of patient images. Available in English and Spanish, it's designed for medical professionals, students, and the general public.

**Highlights:** Detailed syndrome information, Patient image gallery, Finder tool, English and Spanish language support, Historical data on diseases, Clinical features and treatment

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

**In-app purchases:** none


### KernelHairs

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Sindromes free?

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

### Is KernelHairs free?

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

### Do Sindromes or KernelHairs have ads?

Neither Sindromes nor KernelHairs shows ads.

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

Sindromes ships an update every 15 months, and KernelHairs every 3 months. Most recently, Sindromes was updated on October 10, 2026 and KernelHairs on October 11, 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.*