# Maxem vs Kortenberg

The clearest difference is iOS requirement: Maxem at 13.4 against Kortenberg's 16.4. 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.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 11, 2026 and November 14, 2026 respectively.

## The numbers

| Metric | Maxem | Kortenberg |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Size | 15 MB | 77 MB |
| Requires iOS | **13.4** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Maxem Energy Solutions B.V](https://appshunter.io/developer/1240232203) | [Vlaamse overheid](https://appshunter.io/developer/664577169) |

## What reviewers say

### Maxem

[App page](https://appshunter.io/ios/app/maxem/id1265072150)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kortenberg

[App page](https://appshunter.io/ios/app/kortenberg/id1596490914)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Maxem free?

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

### Is Kortenberg free?

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

### Do Maxem or Kortenberg have ads?

Neither Maxem nor Kortenberg shows ads.

### Which is updated more often, Maxem or Kortenberg?

Maxem ships an update fortnightly, and Kortenberg fortnightly. Most recently, Maxem was updated on November 11, 2026 and Kortenberg on November 14, 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.*