# KayıtesIK vs Derssis

KayıtesIK and Derssis are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KayıtesIK ships an update every 10 days, Derssis every 3 weeks. Both last shipped on October 30, 2026.

## The numbers

| Metric | KayıtesIK | Derssis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Size | 77 MB | 79 MB |
| Requires iOS | 15.6 | **15.5** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Uçak Yazılım](https://appshunter.io/developer/1597737159) | [Magical](https://appshunter.io/developer/1773093186) |

## What reviewers say

### KayıtesIK

[App page](https://appshunter.io/ios/app/kaytesik/id6480040800)

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

**In-app purchases:** none


### Derssis

[App page](https://appshunter.io/ios/app/derssis/id6736704925)

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

**In-app purchases:** none


## Frequently asked questions

### Is KayıtesIK free?

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

### Is Derssis free?

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

### Do KayıtesIK or Derssis have ads?

Neither KayıtesIK nor Derssis shows ads.

### Which is updated more often, KayıtesIK or Derssis?

KayıtesIK ships an update every 10 days, and Derssis every 3 weeks. Most recently, KayıtesIK was updated on October 30, 2026 and Derssis on October 30, 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.*