# Kärnfull Price vs FerroControl

The clearest difference is update cadence: Kärnfull Price at every 6 weeks against FerroControl's every 4 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.

Kärnfull Price ships an update every 6 weeks, FerroControl every 4 months. The most recent releases landed on October 2, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Kärnfull Price | FerroControl |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/karnfull-price/id1645459280/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 9 MB | 11 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kim Ahlberg](https://appshunter.io/developer/1545434417) | [ARNE DENNIS BERGGREN](https://appshunter.io/developer/1896198050) |

## What reviewers say

### Kärnfull Price

[App page](https://appshunter.io/ios/app/karnfull-price/id1645459280)

Access real-time hourly electricity prices and receive notifications for your region. Utilize widgets to display current prices directly on your device's home or lock screen.

**Highlights:** Hourly electricity price viewing, Home screen widgets, Lock screen widgets, Price change notifications, Region-specific pricing

**Features:** macOS Compatibility

**In-app purchases:** none


### FerroControl

[App page](https://appshunter.io/ios/app/ferrocontrol/id6766107446)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kärnfull Price free?

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

### Is FerroControl free?

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

### Do Kärnfull Price or FerroControl have ads?

Neither Kärnfull Price nor FerroControl shows ads.

### Which is updated more often, Kärnfull Price or FerroControl?

Kärnfull Price ships an update every 6 weeks, and FerroControl every 4 months. Most recently, Kärnfull Price was updated on October 2, 2026 and FerroControl on October 17, 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.*