# ONI system vs Fenix Control

The clearest difference is review sentiment: ONI system at 33% against Fenix Control's 18%. ONI system also leads on iOS requirement (13.0 vs 15.1). On price, update cadence, 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.

ONI system ships an update every 6 weeks, Fenix Control every 5 weeks. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ONI system | Fenix Control |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **33.3% of reviews** | 18.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 90 MB | 31 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NAM system a.s.](https://appshunter.io/developer/1156895479) | [Watts Electronics](https://appshunter.io/developer/1155424968) |

## What reviewers say

### ONI system

[App page](https://appshunter.io/ios/app/oni-system/id1156895480)

Access and view crucial asset data, including lists, real-time positions, and traffic information. Track trips, view routes, and get detailed asset states like temperature and battery levels. Navigate directly to asset locations.

**Highlights:** View asset lists, Real-time asset positions, Google traffic near assets, Logbook of trips, Asset route history, Navigation to asset location, Detailed asset states

**In-app purchases:** none


### Fenix Control

[App page](https://appshunter.io/ios/app/fenix-control/id1474206689)

Control your radiant heating system remotely with this app. Manage thermostats and monitor energy consumption from anywhere, anytime, for increased efficiency and savings.

**Highlights:** Remote heating system control, Monitor energy consumption, Manage TFT WIFI thermostats, Control WIFI BOX, Real-time efficiency monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ONI system free?

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

### Is Fenix Control free?

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

### Do ONI system or Fenix Control have ads?

Neither ONI system nor Fenix Control shows ads.

### Which is updated more often, ONI system or Fenix Control?

ONI system ships an update every 6 weeks, and Fenix Control every 5 weeks. Most recently, ONI system was updated on October 1, 2026 and Fenix Control on October 9, 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.*