# ETI Commander vs PMI Atom

The clearest difference is update cadence: PMI Atom at every 5 days against ETI Commander's every 2 months. ETI Commander'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.

ETI Commander ships an update every 2 months, PMI Atom every 5 days. The most recent releases landed on June 22, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | ETI Commander | PMI Atom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/eti-commander/id1423110846/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 10 MB | 23 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Electronic Technology Inc.](https://appshunter.io/developer/1423110845) | [Power Monitors, Incorporated](https://appshunter.io/developer/540822326) |

## What reviewers say

### ETI Commander

[App page](https://appshunter.io/ios/app/eti-commander/id1423110846)

This app allows users to program and monitor ETI MNPR relays using a Bluetooth optical head. It facilitates troubleshooting of network protector and relay operations. Requires specific ETI hardware for functionality.

**Highlights:** Program MNPR relays, Monitor MNPR relays, Bluetooth optical head connectivity, Troubleshoot relay operation, Troubleshoot network protector operation

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

**In-app purchases:** none


### PMI Atom

[App page](https://appshunter.io/ios/app/pmi-atom/id6451215869)

**In-app purchases:** none


## Frequently asked questions

### Is ETI Commander free?

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

### Is PMI Atom free?

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

### Do ETI Commander or PMI Atom have ads?

Neither ETI Commander nor PMI Atom shows ads.

### Which is updated more often, ETI Commander or PMI Atom?

ETI Commander ships an update every 2 months, and PMI Atom every 5 days. Most recently, ETI Commander was updated on June 22, 2026 and PMI Atom on September 8, 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.*