# FXC Control vs MillerTech

The clearest difference is review sentiment: MillerTech at 100% against FXC Control's 14%. MillerTech also leads on rating (4.3 vs 2.2). FXC Control's advantage is update cadence (monthly vs every 2 months) and ratings volume (24 vs 6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

MillerTech holds the better App Store score, 4.3 against 2.2. Both are backed by a comparable volume of ratings — 24 and 6 respectively. Written reviews point the same way: 14% of FXC Control's written reviews are positive against 100% of MillerTech's.

FXC Control ships an update monthly, MillerTech every 2 months. The most recent releases landed on July 19, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | FXC Control | MillerTech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.2 (24 ratings)](https://appshunter.io/ios/app/fxc-control/id1484424847/reviews) | **[4.3 (6 ratings)](https://appshunter.io/ios/app/millertech/id1628834753/reviews)** |
| Number of ratings | **24** | 6 |
| Positive reviews | 14.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | Free |
| Size | 8 MB | 42 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Xantrex Canada ULC](https://appshunter.io/developer/1479481626) | [Lester Miller](https://appshunter.io/developer/1646174937) |

## What reviewers say

### FXC Control

[App page](https://appshunter.io/ios/app/fxc-control/id1484424847)

Control and adjust settings for your Freedom X/XC inverter or inverter/charger. Requires a compatible remote control panel with Bluetooth. Consult user guides for setup and operation.

**Highlights:** Change settings, Control parameters, Bluetooth communication, Inverter/charger management, System configuration

**Features:** macOS Compatibility

**In-app purchases:** none


### MillerTech

[App page](https://appshunter.io/ios/app/millertech/id1628834753)

Monitor your lithium batteries with Bluetooth technology. Get instant access to key battery stats like voltage, state-of-charge, and real-time power usage. Enhance your experience and gain peace of mind with at-a-glance data.

**Highlights:** Bluetooth battery monitoring, Real-time power usage, Battery voltage display, State-of-Charge tracking, Design and remaining capacity

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FXC Control free?

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

### Is MillerTech free?

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

### Which has better reviews, FXC Control or MillerTech?

MillerTech is rated higher. FXC Control averages 2.2 out of 5 from 24 ratings, while MillerTech averages 4.3 from 6 ratings.

### Do FXC Control or MillerTech have ads?

Neither FXC Control nor MillerTech shows ads.

### Which is updated more often, FXC Control or MillerTech?

FXC Control ships an update monthly, and MillerTech every 2 months. Most recently, FXC Control was updated on July 19, 2026 and MillerTech on June 10, 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.*