Comparison

Xiaoxiang BMS vs Resistor

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

Head to head
About

Xiaoxiang BMS

Monitor and manage your Bluetooth-enabled battery management systems (BMS) for Li-Ion and LiFePo4 packs. Track cell voltage, capacity, current, and temperature. Switch battery outputs on/off and configure settings remotely.

Highlights
  • Monitor cell voltage, capacity, current, and temperature
  • Switch battery output on/off
  • Calibrate cell voltage and current
  • Configure balancer and BMS capacity
  • Change Bluetooth advertised name
  • Unlock hardware protected BMS (firmware v20+)
  • Set PIN code for BMS access
Features
Read full description

With Xiaoxiang / jiabaida BMS Smart BMS you can build simple Li-Ion or LiFePo4 battery packs. For camping, car, solar or e-bikes. iOS app for Xiaoxiang / jiabaida BMS (JBD-SP15S001 / JBD-SP05S002) allows you to monitor voltage of the cells, total capacity, charging/discharging current and alarms temperatures on your iPhone or Apple Watch. Additionally you can switch the battery (charging and discharging ports) off. Note: I'm not manufacturer of this BMS. If you have questions or want to buy one, contact one of the manufacturers: https://www.lithiumbatterypcb.com/ App Features: - change bluetooth advertised name - for BMS firmware > v20: unlock hardware protected bms - Notifications support on iPhone and Apple Watch - saving / restoring BMS configs - set PIN code for BMS and config access (only iOS) - calibrate cells voltage and charging / discharging current - show basic data on Apple Watch - simple logging of max voltage, current and power - enable and configure Balancer - change BMS capacity setting - switch the battery output on/off - monitor temperature, cell voltages, current, power and temperature - monitor BMS alarms - Supported Languages: English, German, Polish, Chinese, French, Spain For missing features or problems using the app submit an Issue on GitHub: https://github.com/smagicld/xiaoxiangBMS/issues

About

Resistor

This application simplifies electronic circuit calculations with tools for series/parallel resistance, LED current limiting, and three-phase circuit conversions. It also features a resistor color code decoder for quick component identification.

Highlights
  • Series/parallel resistor calculator
  • LED series resistor calculator
  • Star-delta and delta-star converters
  • Resistor color code decoder
  • Intuitive interface
Features
Read full description

Resistor Calc is an essential tool for anyone working with electronic circuits and resistors. Designed to streamline complex calculations and provide invaluable insights, this powerful app for iOS devices is a must-have in your toolkit. At the heart of Resistor Calc lies a comprehensive suite of calculators tailored to the needs of electrical engineers, students, hobbyists, and professionals. The series/parallel calculator makes it a breeze to determine the equivalent resistance for even the most intricate circuit configurations, eliminating the need for tedious manual calculations prone to errors. The LED series resistor calculator is a game-changer for those working with LED lighting systems. Simply input the required parameters, and Resistor Calc will recommend the ideal resistor value to ensure proper current limiting and protect your LEDs from potential damage, ensuring optimal performance and longevity. For three-phase circuits, the app's star-delta and delta-star converters streamline the process of switching between different wiring configurations. Whether you need to convert from star to delta or vice versa, Resistor Calc has you covered, saving you valuable time and effort. But the true standout feature of Resistor Calc is its powerful resistor color code decoder. Never again will you need to decipher those tiny colored bands manually. Simply input the color codes, and the app will instantly reveal the resistor's value, tolerance, and other essential information, making component identification a breeze and saving you countless hours of frustration. With its sleek and intuitive interface, Resistor Calc is designed for seamless navigation and ease of use. Whether you're a student grappling with complex circuit problems or a seasoned professional tackling intricate projects, this app empowers you with accurate and reliable calculations at your fingertips. Download Resistor Calc today and experience the power of efficient circuit analysis and resistor management on your iOS device. Streamline your workflow, minimize errors, and unlock new levels of productivity in your electrical engineering endeavours.

Screenshots

Xiaoxiang BMS4 screens
Resistor4 screens

Verdict

The call

The clearest difference is rating: Xiaoxiang BMS at 3.6 against Resistor's 3.0. Xiaoxiang BMS also leads on update cadence (every 4 weeks vs every 16 months) and ratings volume (66 vs 3). Resistor's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 16.0). On price, review sentiment, ads and device support 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. Xiaoxiang BMS sells 1 one-off in-app purchase. Resistor asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Xiaoxiang BMS holds the better App Store score, 3.6 against 3.0. That said, the two scores are not equally well evidenced: Xiaoxiang BMS has 66 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 55% of Xiaoxiang BMS's written reviews are positive against 50% of Resistor's.

UpkeepUpdate frequency

Xiaoxiang BMS ships an update every 4 weeks, Resistor every 16 months. The most recent releases landed on September 28, 2026 and September 9, 2026 respectively.

Scorecard6 real differences · 4 level
Xiaoxiang BMS versus Resistor: the parameters behind the verdict, then further details
ParameterXiaoxiang BMSResistor
PriceFreeFree
Rating3.6 (66 ratings) — better3.0 (3 ratings)
Positive reviews54.5% of reviews — better50.0% of reviews
Number of ratings66 — better3
Update frequencyEvery 4 weeks — betterEvery 16 months
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS16.013.0 — better
Further details — not scored
Size10 MB22 MB
Age rating4+4+
Developere77code GmbHAnas Abubakar

Customer experience

Xiaoxiang BMS

All ratings66 ratings
Positive60.6%
Neutral10.6%
Negative28.8%
Written reviews132 reviews
Positive54.5%
Neutral10.6%
Negative34.8%

Resistor

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

1 purchases

Xiaoxiang BMS

One-time1
  • Pro Version$7.99
None

Resistor

No in-app purchases

Questions

Is Xiaoxiang BMS free?
Xiaoxiang BMS is free to download, with in-app purchases available.
Is Resistor free?
Resistor is free to download, with no in-app purchases.
Which has better reviews, Xiaoxiang BMS or Resistor?
Xiaoxiang BMS is rated higher. Xiaoxiang BMS averages 3.6 out of 5 from 66 ratings, while Resistor averages 3.0 from 3 ratings.
Do Xiaoxiang BMS or Resistor have ads?
Both Xiaoxiang BMS and Resistor show ads.
Which is updated more often, Xiaoxiang BMS or Resistor?
Xiaoxiang BMS ships an update every 4 weeks, and Resistor every 16 months. Most recently, Xiaoxiang BMS was updated on September 28, 2026 and Resistor on September 9, 2026.

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