# WOLFF IMM vs KRL SmartBox

The clearest difference is iOS requirement: WOLFF IMM at 11.0 against KRL SmartBox's 15.1. On price, update cadence, ads 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.

WOLFF IMM ships an update every 6 months, KRL SmartBox every 7 months. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | WOLFF IMM | KRL SmartBox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 7 months |
| Size | 21 MB | 33 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Uzin Utz SE](https://appshunter.io/developer/687283192) | [Witte Metallwaren Handelsges. mbH & Co. KG](https://appshunter.io/developer/979847433) |

## What reviewers say

### WOLFF IMM

[App page](https://appshunter.io/ios/app/wolff-imm/id1491930968)

**In-app purchases:** none


### KRL SmartBox

[App page](https://appshunter.io/ios/app/krl-smartbox/id6477445537)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WOLFF IMM free?

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

### Is KRL SmartBox free?

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

### Do WOLFF IMM or KRL SmartBox have ads?

Neither WOLFF IMM nor KRL SmartBox shows ads.

### Which is updated more often, WOLFF IMM or KRL SmartBox?

WOLFF IMM ships an update every 6 months, and KRL SmartBox every 7 months. Most recently, WOLFF IMM was updated on October 8, 2026 and KRL SmartBox on October 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.*