MillerTech vs RoyPow Fish.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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!
RoyPow Fish.
Monitor your battery management system (BMS) directly from your mobile device. Connect via Bluetooth to view battery status and parameters in real-time.
- Bluetooth connection
- Battery BMS monitoring
- Real-time parameter viewing
- Mobile phone compatibility
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Battery BMS Monitor APP via Mobile Phone Bluetooth Connection
Screenshots
Verdict
The clearest difference is review sentiment: MillerTech at 100% against RoyPow Fish.'s 0%. MillerTech also leads on rating (4.3 vs 1.5). On price, ratings volume, update cadence and ads 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 1.5. Both are backed by a comparable volume of ratings — 6 and 4 respectively. Written reviews point the same way: 100% of MillerTech's written reviews are positive against 0% of RoyPow Fish.'s.
MillerTech ships an update every 2 months, RoyPow Fish. every 5 weeks. The most recent releases landed on June 10, 2026 and September 10, 2026 respectively.
| Parameter | MillerTech | RoyPow Fish. |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (6 ratings) — better | 1.5 (4 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 6 — better | 4 |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 42 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Lester Miller | 深圳市环宇鼎鑫科技有限公司 |
Customer experience
MillerTech
RoyPow Fish.
In-app purchases
MillerTech
No in-app purchases
RoyPow Fish.
No in-app purchases
