# Solexpress vs Katjas kraftverk

The clearest difference is update cadence: Solexpress at every 3 months against Katjas kraftverk's every 7 months. Solexpress also leads on iOS requirement (12.0 vs 16.4). 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.

Solexpress ships an update every 3 months, Katjas kraftverk every 7 months. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Solexpress | Katjas kraftverk |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 7 months |
| Size | 42 MB | 80 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bitlla AB](https://appshunter.io/developer/1300677442) | [Ellions AB](https://appshunter.io/developer/1168082082) |

## What reviewers say

### Solexpress

[App page](https://appshunter.io/ios/app/solexpress/id1338777850)

**In-app purchases:** none


### Katjas kraftverk

[App page](https://appshunter.io/ios/app/katjas-kraftverk/id6463830992)

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

**In-app purchases:** none


## Frequently asked questions

### Is Solexpress free?

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

### Is Katjas kraftverk free?

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

### Do Solexpress or Katjas kraftverk have ads?

Neither Solexpress nor Katjas kraftverk shows ads.

### Which is updated more often, Solexpress or Katjas kraftverk?

Solexpress ships an update every 3 months, and Katjas kraftverk every 7 months. Most recently, Solexpress was updated on October 26, 2026 and Katjas kraftverk on November 3, 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.*