# Derya B2B vs Müküça B4B

The clearest difference is update cadence: Müküça B4B at every 5 weeks against Derya B2B's every 13 months. Derya B2B's advantage is iOS requirement (12.0 vs 15.6). 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.

Derya B2B ships an update every 13 months, Müküça B4B every 5 weeks. The most recent releases landed on September 8, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | Derya B2B | Müküça B4B |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 5 weeks** |
| Size | 70 MB | 3 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NAT Yazilim](https://appshunter.io/developer/1137276538) | [Esproit](https://appshunter.io/developer/1110134338) |

## What reviewers say

### Derya B2B

[App page](https://appshunter.io/ios/app/derya-b2b/id1393830993)

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

**In-app purchases:** none


### Müküça B4B

[App page](https://appshunter.io/ios/app/mukuca-b4b/id6761008605)

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

**In-app purchases:** none


## Frequently asked questions

### Is Derya B2B free?

Derya B2B is free to download, with no in-app purchases.

### Is Müküça B4B free?

Müküça B4B is free to download, with no in-app purchases.

### Do Derya B2B or Müküça B4B have ads?

Neither Derya B2B nor Müküça B4B shows ads.

### Which is updated more often, Derya B2B or Müküça B4B?

Derya B2B ships an update every 13 months, and Müküça B4B every 5 weeks. Most recently, Derya B2B was updated on September 8, 2026 and Müküça B4B on September 5, 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.*