Comparison

MillerTech vs RoyPow Fish.

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Bluetooth battery monitoring
  • Real-time power usage
  • Battery voltage display
  • State-of-Charge tracking
  • Design and remaining capacity
Features
Read full description

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!

About

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.

Highlights
  • Bluetooth connection
  • Battery BMS monitoring
  • Real-time parameter viewing
  • Mobile phone compatibility
Features
Read full description

Battery BMS Monitor APP via Mobile Phone Bluetooth Connection

Screenshots

MillerTech4 screens
RoyPow Fish.3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
MillerTech versus RoyPow Fish.: the parameters behind the verdict, then further details
ParameterMillerTechRoyPow Fish.
PriceFreeFree
Rating4.3 (6 ratings) — better1.5 (4 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings6 — better4
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size42 MB27 MB
Age rating4+4+
DeveloperLester Miller深圳市环宇鼎鑫科技有限公司

Customer experience

MillerTech

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

RoyPow Fish.

All ratings4 ratings
Positive0.0%
Neutral25.0%
Negative75.0%
Written reviews4 reviews
Positive0.0%
Neutral25.0%
Negative75.0%

In-app purchases

None

MillerTech

No in-app purchases

None

RoyPow Fish.

No in-app purchases

Questions

Is MillerTech free?
MillerTech is free to download, with no in-app purchases.
Is RoyPow Fish. free?
RoyPow Fish. is free to download, with no in-app purchases.
Which has better reviews, MillerTech or RoyPow Fish.?
MillerTech is rated higher. MillerTech averages 4.3 out of 5 from 6 ratings, while RoyPow Fish. averages 1.5 from 4 ratings.
Do MillerTech or RoyPow Fish. have ads?
Neither MillerTech nor RoyPow Fish. shows ads.
Which is updated more often, MillerTech or RoyPow Fish.?
MillerTech ships an update every 2 months, and RoyPow Fish. every 5 weeks. Most recently, MillerTech was updated on June 10, 2026 and RoyPow Fish. on September 10, 2026.

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