BMS Tool vs SIAECOSYS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BMS Tool
Monitor your battery management systems via Bluetooth. Supports multiple BMS types including Liontron, XiaoXiang, ANT, and Wattstunde. Offers a screen always-on mode and macOS compatibility.
- Screen Always ON mode
- Multiple BMS support
- Liontron BMS read-only
- XiaoXiang BMS read-only
- ANT BMS read-only
- Wattstunde LiFePo4 read-only
- macOS support
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BMS Tool shows the state of your battery from its battery management system (BMS) over Bluetooth, on the iPhone, the iPad, the Mac and the Apple Watch. Supported BMS: - XiaoXiang smart BMS - ANT BMS - Liontron batteries - Wattstunde LiFePO4 batteries Features: - Charge, voltage, current and power at a glance - Time until full while charging and until empty while discharging, estimated from the present current - Every cell voltage with minimum, maximum, difference and balancing - Temperature sensors, alarms and BMS information - Several batteries in one list, each with its own name - Session values and a CSV log of the readings - Home screen widget - Apple Watch app with complications: charge, cells, temperatures and alarms of the battery open on the iPhone - The display can stay on while the app is open The app reads the values of the BMS and does not change its settings. Ideas and requests are welcome at web.e77code.com/bms-tool.
SIAECOSYS
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SIA App是智能电动车控制系统软件，能够对电动车进行无线连接;查看车况信息；掌握车辆状态，调整车辆参数；个性化设置，随你掌控，让您的爱车更智能。
Screenshots
Verdict
The clearest difference is in-app purchases: SIAECOSYS at none against BMS Tool's 1. SIAECOSYS also leads on ads (none vs shown) and update cadence (every 3 days vs every 2 months). BMS Tool's advantage is device support (4 vs 2). On price 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. BMS Tool sells 1 one-off in-app purchase. SIAECOSYS asks for nothing beyond the download.
BMS Tool ships an update every 2 months, SIAECOSYS every 3 days. The most recent releases landed on October 24, 2026 and October 2, 2026 respectively.
| Parameter | BMS Tool | SIAECOSYS |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (7 ratings) — better | — |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 15.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | e77code GmbH | Teranovo |
In-app purchases
BMS Tool
- Remove Ads$1.99
SIAECOSYS
No in-app purchases
