# KOLEJ vs Dermabien®

The clearest difference is update cadence: Dermabien® at every 2 months against KOLEJ's every 26 months. KOLEJ's advantage is iOS requirement (11.0 vs 13.4). 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.

KOLEJ ships an update every 26 months, Dermabien® every 2 months. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | KOLEJ | Dermabien® |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 2 months** |
| Size | 57 MB | 26 MB |
| Requires iOS | **11.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SENKRON BILGISAYAR OTOM LTD.](https://appshunter.io/developer/498226578) | [MTK BILISIM YAZILIM ARASTIRMA GELISTIRME DANISMANLIK VE TICARET LIMITED SIRKETI](https://appshunter.io/developer/1156807120) |

## What reviewers say

### KOLEJ

[App page](https://appshunter.io/ios/app/kolej-in/id1617618375)

**Features:** macOS Compatibility

**In-app purchases:** none


### Dermabien®

[App page](https://appshunter.io/ios/app/dermabien/id6502236551)

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

**In-app purchases:** none


## Frequently asked questions

### Is KOLEJ free?

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

### Is Dermabien® free?

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

### Do KOLEJ or Dermabien® have ads?

Neither KOLEJ nor Dermabien® shows ads.

### Which is updated more often, KOLEJ or Dermabien®?

KOLEJ ships an update every 26 months, and Dermabien® every 2 months. Most recently, KOLEJ was updated on September 18, 2026 and Dermabien® on September 21, 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.*