# HYBS Kocaeli vs eSefer

The clearest difference is update cadence: eSefer at every 3 weeks against HYBS Kocaeli's every 2 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.

HYBS Kocaeli ships an update every 2 months, eSefer every 3 weeks. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | HYBS Kocaeli | eSefer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 41 MB | 93 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kocaeli Büyükşehir Belediyesi](https://appshunter.io/developer/1205432616) | [Orhan Ozturk](https://appshunter.io/developer/6774561880) |

## What reviewers say

### HYBS Kocaeli

[App page](https://appshunter.io/ios/app/hybs-kocaeli/id1288497690)

**Features:** macOS Compatibility

**In-app purchases:** none


### eSefer

[App page](https://appshunter.io/ios/app/esefer/id6774561878)

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

**In-app purchases:** none


## Frequently asked questions

### Is HYBS Kocaeli free?

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

### Is eSefer free?

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

### Do HYBS Kocaeli or eSefer have ads?

Neither HYBS Kocaeli nor eSefer shows ads.

### Which is updated more often, HYBS Kocaeli or eSefer?

HYBS Kocaeli ships an update every 2 months, and eSefer every 3 weeks. Most recently, HYBS Kocaeli was updated on October 26, 2026 and eSefer on October 25, 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.*