Comparison

PVbutler vs LanmaoBMS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PVbutler

Monitor your photovoltaic plant's performance remotely. Access energy yield, income, and system status wirelessly. Requires registration with the Sacolar PV Data Center.

Highlights
  • Remote monitoring of photovoltaic plants
  • Access energy yield data
  • Track income generation
  • View system status
  • Wireless data access
  • Compatible with Sacolar PV Data Center
Features
Read full description

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)

About

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.

Highlights
  • 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
Features
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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

PVbutler4 screens
LanmaoBMS4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

PVbutler ships an update every 3 months, LanmaoBMS fortnightly. The most recent releases landed on August 15, 2026 and July 6, 2026 respectively.

Scorecard3 real differences · 7 level
PVbutler versus LanmaoBMS: the parameters behind the verdict, then further details
ParameterPVbutlerLanmaoBMS
PriceFreeFree
Rating2.9 (15 ratings)5.0 (1 ratings) — better
Positive reviews17.6% of reviews—
Number of ratings15 — better1
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.011.0 — better
Further details — not scored
Size214 MB13 MB
Age rating4+4+
DeveloperShenzhen Growatt New Energy Technology Co.,LtdNanchang Yepai Technology Co., Ltd.

In-app purchases

None

PVbutler

No in-app purchases

None

LanmaoBMS

No in-app purchases

Questions

Is PVbutler free?
PVbutler is free to download, with no in-app purchases.
Is LanmaoBMS free?
LanmaoBMS is free to download, with no in-app purchases.
Which has better reviews, PVbutler or LanmaoBMS?
LanmaoBMS is rated higher. PVbutler averages 2.9 out of 5 from 15 ratings, while LanmaoBMS averages 5.0 from 1 ratings.
Do PVbutler or LanmaoBMS have ads?
Neither PVbutler nor LanmaoBMS shows ads.
Which is updated more often, PVbutler or LanmaoBMS?
PVbutler ships an update every 3 months, and LanmaoBMS fortnightly. Most recently, PVbutler was updated on August 15, 2026 and LanmaoBMS on July 6, 2026.

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