FXC Control vs MillerTech
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FXC Control
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.
- Change settings
- Control parameters
- Bluetooth communication
- Inverter/charger management
- System configuration
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This application allows you to change settings and control available parameters on your Freedom X/XC inverter or inverter/charger. Please note it requires the Freedom X/XC remote control panel with the support of Bluetooth communication. Please read the Freedom X/XC inverter/charger and FX Remote Panel user guides before configuring and operating the Freedom X/XC system. Ensure that your iOS is updated to the latest version.
MillerTech
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.
- Bluetooth battery monitoring
- Real-time power usage
- Battery voltage display
- State-of-Charge tracking
- Design and remaining capacity
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MillerTech Lithium Battery monitoring system with Bluetooth technology. A total game-changer, this app will give users the ability to see important battery stats and data at a glance. Meaning now you can spend more time doing what matters and less time guessing! With this technology the user has instant access to, Battery voltage Battery State-of-Charge Real time power usage Design capacity Remaining capacity We believe these capabilities will forever enhance your experience, giving you the piece of mind that you deserve!
Screenshots
Verdict
The clearest difference is review sentiment: MillerTech at 100% against FXC Control's 20%. MillerTech also leads on rating (4.3 vs 2.4) and iOS requirement (13.0 vs 15.6). FXC Control's advantage is ratings volume (28 vs 6). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 2.4. Both are backed by a comparable volume of ratings — 28 and 6 respectively. Written reviews point the same way: 20% of FXC Control's written reviews are positive against 100% of MillerTech's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 30, 2026 and September 20, 2026 respectively.
| Parameter | FXC Control | MillerTech |
|---|---|---|
| Price | Free | Free |
| Rating | 2.4 (28 ratings) | 4.3 (6 ratings) — better |
| Positive reviews | 20.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 28 — better | 6 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Xantrex Canada ULC | Lester Miller |
Customer experience
FXC Control
MillerTech
In-app purchases
FXC Control
No in-app purchases
MillerTech
No in-app purchases
