# PROX vs ONS+

The clearest difference is update cadence: PROX at fortnightly against ONS+'s every 3 months. ONS+'s advantage is iOS requirement (11.0 vs 15.0). On price, rating, ratings volume and ads 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 PROX against 5.0 for ONS+. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

PROX ships an update fortnightly, ONS+ every 3 months. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | PROX | ONS+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/prox/id1473606097/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/ons-plus/id1526485784/reviews) |
| Number of ratings | 2 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Free | Free |
| Size | 72 MB | 49 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Venidera R&D](https://appshunter.io/developer/1297795408) | [ONS - OPERADOR NACIONAL DO SISTEMA ELETRICO](https://appshunter.io/developer/1380823163) |

## What reviewers say

### PROX

[App page](https://appshunter.io/ios/app/prox/id1473606097)

This app serves as an information channel for communities impacted by river level fluctuations. It allows users to monitor power plant operations, register their addresses, and receive flood alerts, fostering social development and relationships with surrounding communities.

**Highlights:** Monitor power plant operations, Register personal addresses, Receive flood alerts, Community information channel, Social development focus

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is PROX free?

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

### Is ONS+ free?

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

### Which has better reviews, PROX or ONS+?

PROX and ONS+ are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do PROX or ONS+ have ads?

Neither PROX nor ONS+ shows ads.

### Which is updated more often, PROX or ONS+?

PROX ships an update fortnightly, and ONS+ every 3 months. Most recently, PROX was updated on September 17, 2026 and ONS+ on September 18, 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.*