# eSales by KCS vs Slim4

The clearest difference is update cadence: Slim4 at every 3 weeks against eSales by KCS's every 7 months. Slim4 also leads on device support. eSales by KCS's advantage is iOS requirement (14.0 vs 17.0). On price and in-app purchases there is nothing between them.

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

eSales by KCS ships an update every 7 months, Slim4 every 3 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | eSales by KCS | Slim4 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Size | 30 MB | 29 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kerridge Commercial Systems](https://appshunter.io/developer/1269486958) | [Slimstock Holding B.V.](https://appshunter.io/developer/1437251928) |

## What reviewers say

### eSales by KCS

[App page](https://appshunter.io/ios/app/esales-by-kcs/id1540104873)

**In-app purchases:** none


### Slim4

[App page](https://appshunter.io/ios/app/slim4/id1670522589)

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

**In-app purchases:** none


## Frequently asked questions

### Is eSales by KCS free?

eSales by KCS is free to download, with no in-app purchases.

### Is Slim4 free?

Slim4 is free to download, with no in-app purchases.

### Which is updated more often, eSales by KCS or Slim4?

eSales by KCS ships an update every 7 months, and Slim4 every 3 weeks. Most recently, eSales by KCS was updated on October 27, 2026 and Slim4 on October 24, 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.*