LTW BMS vs FM BMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LTW BMS
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The LTW BMS is connected to the battery pack through Bluetooth to monitor the status of the battery pack and provide monitoring means for the management of the lithium battery system. 1. Real-time display of SOC, voltage, current, temperature and other battery pack information in the form of ring and digital display; 2. Displays the real-time voltage of a single battery, protection status and alarm status of the battery string. 3. Display the status of the charge/discharge switch and battery balance.
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 LTW BMS's every 14 months. LTW BMS's advantage is iOS requirement (9.0 vs 12.0). 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.
LTW BMS ships an update every 14 months, FM BMS fortnightly. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.
| Parameter | LTW BMS | FM BMS |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 14 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 9.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 3 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen LTW Electronic Technology Co., Ltd. | 蓓 徐 |
In-app purchases
LTW BMS
No in-app purchases
FM BMS
No in-app purchases
