# IoTMeter vs Oppex

IoTMeter and Oppex are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

IoTMeter ships an update every 3 weeks, Oppex fortnightly. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | IoTMeter | Oppex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/iotmeter/id1560319286/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 35 MB | 71 MB |
| Requires iOS | 17 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pavel Lpa](https://appshunter.io/developer/1560303712) | [Oppex](https://appshunter.io/developer/1895407970) |

## What reviewers say

### IoTMeter

[App page](https://appshunter.io/ios/app/iotmeter/id1560319286)

This application provides a user interface for managing smart devices that measure electrical quantities and control EVSE charging. It optimizes the use of photovoltaic power for heating appliances and hot water storage, enabling wireless communication with various energy systems.

**Highlights:** Device setup and user interface, Electrical quantity measurement, EVSE charging current control, PV power utilization optimization, Wireless communication with PV inverters, Standalone function capability

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

**In-app purchases:** none


### Oppex

[App page](https://appshunter.io/ios/app/oppex/id6763629993)

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

**In-app purchases:** none


## Frequently asked questions

### Is IoTMeter free?

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

### Is Oppex free?

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

### Do IoTMeter or Oppex have ads?

Neither IoTMeter nor Oppex shows ads.

### Which is updated more often, IoTMeter or Oppex?

IoTMeter ships an update every 3 weeks, and Oppex fortnightly. Most recently, IoTMeter was updated on October 3, 2026 and Oppex on October 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.*