KD Serials vs XY BMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KD Serials
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KD series volt-ampere meter is a new type of coulomb meter that can measure various physical parameters such as voltage, current, power, charge and discharge capacity, remaining time, etc. At the same time, parameters can also be set to achieve full capacity voltage, zero capacity voltage, low capacity alarms, etc. Features. The meter can automatically identify the direction of the current, and can monitor the battery capacity in real time and use a broken code liquid crystal display. The measured data display information is comprehensive and user-friendly.
XY BMS
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XY BMS is a battery management system APP. It can connect multiple battery management systems at the same time through Bluetooth communication to realize real-time monitoring of battery status and operation parameter setting. Effectively improve the safety, efficiency, stability and prolong the battery life of the battery system. 1. Real-time display of voltage, current, power, calculation capacity, number of cycles, temperature, expected charging time or discharge time. 2. Display the battery running status and alarm type in real time. 3. Real-time display of voltage value, pressure difference, balance state, etc. 4. Parameters related to battery operation can be set through password verification. 5. The XY BMS can be connected to multiple batteries at the same time, and it is easy to switch between batteries on the home page.
Screenshots
Verdict
The clearest difference is update cadence: KD Serials at every 4 weeks against XY BMS's every 3 months. KD Serials also leads on iOS requirement (9.0 vs 11.0). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
KD Serials ships an update every 4 weeks, XY BMS every 3 months. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.
| Parameter | KD Serials | XY BMS |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 9.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 39 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Hangzhou Junce Instruments Co., Ltd. | 小宁 冯 |
In-app purchases
KD Serials
No in-app purchases
XY BMS
No in-app purchases









