# Open Energia vs U

The clearest difference is update cadence: U at every 3 weeks against Open Energia's every 5 months. Open Energia's advantage is iOS requirement (13.0 vs 16.0). 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.

Open Energia ships an update every 5 months, U every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Open Energia | U |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 38 MB | 21 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [WATTSDAT SRL](https://appshunter.io/developer/1444036264) | [Dea Moneta s.r.l.](https://appshunter.io/developer/1337597423) |

## What reviewers say

### Open Energia

[App page](https://appshunter.io/ios/app/open-energia/id1660910808)

Manage your electricity and gas contracts, view bills, and track consumption. This app allows you to submit gas meter readings, pay bills with a credit card, and receive important notifications about your energy services.

**Highlights:** Manage electricity and gas contracts, View and download bills, Track energy consumption, Submit gas meter readings, Pay bills via credit card, Receive payment and bill notifications

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

**In-app purchases:** none


### U

[App page](https://appshunter.io/ios/app/u-pop-grading/id6754088181)

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

**In-app purchases:** none


## Frequently asked questions

### Is Open Energia free?

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

### Is U free?

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

### Do Open Energia or U have ads?

Neither Open Energia nor U shows ads.

### Which is updated more often, Open Energia or U?

Open Energia ships an update every 5 months, and U every 3 weeks. Most recently, Open Energia was updated on November 3, 2026 and U on October 30, 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.*