# ONS+ vs Sydel Star

The clearest difference is update cadence: Sydel Star at every 2 weeks against ONS+'s every 3 months. ONS+'s advantage is ratings volume (3 vs 1) and iOS requirement (11.0 vs 15.5). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for ONS+ against 5.0 for Sydel Star. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

ONS+ ships an update every 3 months, Sydel Star every 2 weeks. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | ONS+ | Sydel Star |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/ons-plus/id1526485784/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sydel-star/id6747406443/reviews) |
| Number of ratings | **3** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 49 MB | 210 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ONS - OPERADOR NACIONAL DO SISTEMA ELETRICO](https://appshunter.io/developer/1380823163) | [Access Run S A](https://appshunter.io/developer/1315300974) |

## What reviewers say

### ONS+

[App page](https://appshunter.io/ios/app/ons-plus/id1526485784)

Access real-time data on the National Electric System's operation from your mobile device. Monitor energy load, semi-hourly CMO, and generation. Receive alerts, download products, and track upcoming events.

**Highlights:** Real-time operation data, Energy load monitoring, Semi-hourly CMO tracking, Generation information, News alerts, Product downloads, Event tracking

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

**In-app purchases:** none


### Sydel Star

[App page](https://appshunter.io/ios/app/sydel-star/id6747406443)

This smart access control app digitizes entry through your smartphone, making building and parking access secure and automated. Share digital access with friends via personalized invitations and receive notifications when they are used.

**Highlights:** Digital smartphone access, Secure and automated entry, Share digital access with friends, Personalized invitations, Access notifications, Supports various property types

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

**In-app purchases:** none


## Frequently asked questions

### Is ONS+ free?

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

### Is Sydel Star free?

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

### Which has better reviews, ONS+ or Sydel Star?

ONS+ and Sydel Star are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do ONS+ or Sydel Star have ads?

Neither ONS+ nor Sydel Star shows ads.

### Which is updated more often, ONS+ or Sydel Star?

ONS+ ships an update every 3 months, and Sydel Star every 2 weeks. Most recently, ONS+ was updated on October 6, 2026 and Sydel Star on October 7, 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.*