YY BMS vs FM BMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
YY BMS
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Yanyang BMS, Your Battery Management Platform 【Dynamic Monitoring】 You can access the APP at any time and anywhere to view detailed data such as voltage, current, temperature, capacity, and SOC; 【Battery Parameter Modification】 Depending on the application scenario, you can modify the battery type, series number, and various alarm values for voltage and current; 【Real-time Control】 Once you connect the battery to the APP at any time and anywhere, you can control the charging and discharging status of the battery.
FM BMS
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FM BMS保护板，通过蓝牙连接硬件设备，实时监测电池状态，从而达到保护电池的目的
Screenshots
Verdict
The clearest difference is update cadence: FM BMS at fortnightly against YY BMS's every 6 weeks. 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.
YY BMS ships an update every 6 weeks, FM BMS fortnightly. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.
| Parameter | YY BMS | FM BMS |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 30 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Wuhan Yanyang IoT Technology Co., Ltd. | 蓓 徐 |
In-app purchases
YY BMS
No in-app purchases
FM BMS
No in-app purchases
