Comparison

KG Serials vs Pro BMS

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

Head to head
About

KG Serials

This utility measures electrical parameters like voltage, current, and power. It offers multiple protection functions and real-time battery monitoring on a color LCD. The app also supports data export and remote control via mobile or PC.

Highlights
  • Measures voltage, current, power, capacity
  • Multiple protection functions (over/under voltage, over current)
  • Real-time battery monitoring
  • Color LCD display
  • Voltage and current curve display
  • Mobile app and PC control
  • Firmware updates
Features
Read full description

The VAG series volt-ampere meter is a new type of coulomb counter that can measure various physical parameters such as voltage, current, power, charge and discharge capacity, watt-hours, time, etc. It can also set parameters to realize multiple protection functions such as over voltage protection, under voltage protection, over current protection, overpower protection, over temperature protection and time limit protection.The meter can automatically identify the direction of the current, and can monitor the battery capacity in real time and display the measured data in use color LCD screen. The VAG series voltage and current meters add voltage and current curve display and export functions on the basis of the original functions. At the same time, the mobile phone APP and host computer can be used to control, and the firmware can also be updated and upgraded in real time.

About

Pro BMS

This utility app measures and displays real-time battery parameters like voltage, current, and capacity. It offers customizable protection functions and allows for voltage/current curve export. Control and monitoring are available via a mobile app.

Highlights
  • Real-time voltage and current measurement
  • Power, charge, and discharge capacity monitoring
  • Customizable protection functions (overvoltage, overcurrent, etc.)
  • Color LCD display of comprehensive data
  • Voltage and current curve display and export
  • Mobile app control and communication
Features
Read full description

The Pro BMS series voltage and ammeter is a new coulomb meter that can measure various physical parameters such as voltage, current, power, charge and discharge capacity, watt-hour, time, etc. At the same time, parameters can also be set to realize various protection functions such as overvoltage protection, undervoltage protection, overcurrent protection, overpower protection, overtemperature protection and time-limited protection. The meter can automatically identify the direction of current flow In addition, the battery capacity can be monitored in real time and the measured data is displayed on a color LCD, which displays comprehensive and user-friendly information. The Pro BMS series voltage and ammeter adds the function of displaying and exporting voltage and current curves based on the original functions. At the same time, it can be controlled by mobile APP and communication.

Screenshots

KG Serials4 screens
Pro BMS4 screens

Verdict

The call

The clearest difference is rating: KG Serials at 3.4 against Pro BMS's 1.0. KG Serials also leads on ratings volume (7 vs 1) and iOS requirement (9.0 vs 15.6). 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

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

KG Serials holds the better App Store score, 3.4 against 1.0. That said, the two scores are not equally well evidenced: KG Serials has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

KG Serials ships an update monthly, Pro BMS every 2 months. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

Scorecard3 real differences · 7 level
KG Serials versus Pro BMS: the parameters behind the verdict, then further details
ParameterKG SerialsPro BMS
PriceFreeFree
Rating3.4 (7 ratings) — better1.0 (1 ratings)
Positive reviews0.0% of reviews—
Number of ratings7 — better1
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS9.0 — better15.6
Further details — not scored
Size30 MB35 MB
Age rating4+4+
DeveloperHangzhou Junce Instruments Co., Ltd.Shenzhen Leagend Optoelectronics Co., Ltd.

Customer experience

KG Serials

All ratings7 ratings
Positive57.1%
Neutral0.0%
Negative42.9%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

Pro BMS

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

KG Serials

No in-app purchases

None

Pro BMS

No in-app purchases

Questions

Is KG Serials free?
KG Serials is free to download, with no in-app purchases.
Is Pro BMS free?
Pro BMS is free to download, with no in-app purchases.
Which has better reviews, KG Serials or Pro BMS?
KG Serials is rated higher. KG Serials averages 3.4 out of 5 from 7 ratings, while Pro BMS averages 1.0 from 1 ratings.
Do KG Serials or Pro BMS have ads?
Neither KG Serials nor Pro BMS shows ads.
Which is updated more often, KG Serials or Pro BMS?
KG Serials ships an update monthly, and Pro BMS every 2 months. Most recently, KG Serials was updated on October 7, 2026 and Pro BMS on October 13, 2026.

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