# Holaluz vs Residus Ullastrell

The clearest difference is update cadence: Residus Ullastrell at daily against Holaluz's every 10 days. Residus Ullastrell also leads on iOS requirement (12.0 vs 15.0). 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.

Holaluz ships an update every 10 days, Residus Ullastrell daily. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Holaluz | Residus Ullastrell |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/holaluz/id1606933207/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 27.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Daily** |
| Monetization | Free | — |
| Size | 34 MB | 11 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Holaluz](https://appshunter.io/developer/1606933209) | [id-Waste](https://appshunter.io/developer/1634754330) |

## What reviewers say

### Holaluz

[App page](https://appshunter.io/ios/app/holaluz/id1606933207)

Monitor your energy usage, view and download invoices, and track the installation of your solar panels. Manage your electricity contracts and stay updated on your supply point readings with this utility app.

**Highlights:** Monitor energy consumption, View and download invoices, Manage electricity contracts, Track solar panel installation, Submit supply point readings, Check consumption history

**In-app purchases:** none


### Residus Ullastrell

[App page](https://appshunter.io/ios/app/residus-ullastrell/id6475671792)

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

**In-app purchases:** none


## Frequently asked questions

### Is Holaluz free?

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

### Is Residus Ullastrell free?

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

### Do Holaluz or Residus Ullastrell have ads?

Neither Holaluz nor Residus Ullastrell shows ads.

### Which is updated more often, Holaluz or Residus Ullastrell?

Holaluz ships an update every 10 days, and Residus Ullastrell daily. Most recently, Holaluz was updated on October 19, 2026 and Residus Ullastrell on October 6, 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.*