# Blachy Ziemiński vs SFD

The clearest difference is update cadence: SFD at every 2 weeks against Blachy Ziemiński'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.

Blachy Ziemiński ships an update every 2 months, SFD every 2 weeks. The most recent releases landed on October 10, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Blachy Ziemiński | SFD |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 118 MB | 97 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [QRTag sp. z o. o.](https://appshunter.io/developer/1167042832) | [SFD S.A.](https://appshunter.io/developer/820994756) |

## What reviewers say

### Blachy Ziemiński

[App page](https://appshunter.io/ios/app/blachy-zieminski/id6478923225)

This loyalty app serves wholesale customers and roofers, offering a platform to manage their engagement and benefits. It streamlines access to exclusive offers and rewards tailored for industry professionals.

**Highlights:** Loyalty program for wholesale customers, Dedicated features for roofers, Exclusive offers and rewards, Streamlined engagement platform

**Features:** macOS Compatibility

**In-app purchases:** none


### SFD

[App page](https://appshunter.io/ios/app/sfd/id6737574513)

**In-app purchases:** none


## Frequently asked questions

### Is Blachy Ziemiński free?

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

### Is SFD free?

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

### Do Blachy Ziemiński or SFD have ads?

Neither Blachy Ziemiński nor SFD shows ads.

### Which is updated more often, Blachy Ziemiński or SFD?

Blachy Ziemiński ships an update every 2 months, and SFD every 2 weeks. Most recently, Blachy Ziemiński was updated on October 10, 2026 and SFD on October 22, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*