PVbutler vs LanmaoBMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PVbutler
Monitor your photovoltaic plant's performance remotely. Access energy yield, income, and system status wirelessly. Requires registration with the Sacolar PV Data Center.
- Remote monitoring of photovoltaic plants
- Access energy yield data
- Track income generation
- View system status
- Wireless data access
- Compatible with Sacolar PV Data Center
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A client software for monitoring the photovoltaic plant; it can collect the plant running info from Sacolar PV Data Center, such as energy yield, income and system status, which can be remotely and wirelessly accessed by the user. At present it supports plant which is registered in Sacolar PV Data Center(server.pvbutler.com)
LanmaoBMS
This app monitors and manages lithium battery systems via Bluetooth. It provides real-time data on voltage, temperature, and capacity, offering alerts for potential issues and extending battery life. Supports various lithium battery pack configurations.
- Real-time voltage display
- Single battery status and alarms
- Intuitive remaining capacity display
- Cell temperature and critical alerts
- Power and cycle count recording
- Supports multi-cell lithium battery packs
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The intelligent battery management system and the active equalizer are connected through Bluetooth to monitor the battery status, collect, store and process information during battery operation in real time, exchange information with external devices, and solve the safety, usability and service life of the lithium battery system The key issue is to extend the service life of the battery to a certain extent, and to enhance the stability of the battery pack to a certain extent. At the same time, it supports multi-cell lithium battery pack protection board, power lithium battery balance protection board, lithium iron phosphate battery protection board, power battery protection board, lithium battery pack protection board, lithium battery protection board, iron lithium protection board, 24V/36V/48V Protection board and lithium electric power board, etc. 1. Display real-time voltage 2. Display the real-time voltage and alarm status of all single batteries. If the reported parameters trigger the alarm value or protection value, an alarm will be prompted; 3. Display the remaining capacity pack in an intuitive form; 4. Cell temperature warning. Real-time alarm for over temperature, short circuit, over voltage, under voltage 5. Record the power of the device at any time. 6. Record the number of battery cycles. Best Regards !
Screenshots
Verdict
The clearest difference is rating: LanmaoBMS at 5.0 against PVbutler's 2.9. LanmaoBMS also leads on update cadence (fortnightly vs every 3 months). PVbutler's advantage is ratings volume (15 vs 1). On price, ads, in-app purchases and monetization model 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.
LanmaoBMS holds the better App Store score, 5.0 against 2.9. That said, the two scores are not equally well evidenced: PVbutler has 15 ratings behind it against 1, so its average is the more settled of the two.
PVbutler ships an update every 3 months, LanmaoBMS fortnightly. The most recent releases landed on August 15, 2026 and July 6, 2026 respectively.
| Parameter | PVbutler | LanmaoBMS |
|---|---|---|
| Price | Free | Free |
| Rating | 2.9 (15 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 17.6% of reviews | — |
| Number of ratings | 15 — better | 1 |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 214 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Growatt New Energy Technology Co.,Ltd | Nanchang Yepai Technology Co., Ltd. |
In-app purchases
PVbutler
No in-app purchases
LanmaoBMS
No in-app purchases








