Comparison

WatchPower vs BMS

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

Head to head
About

WatchPower

Monitor off-grid inverters remotely via Wi-Fi. View device status, configure settings, receive alerts for warnings or alarms, and record historical data.

Highlights
  • Monitor inverter status
  • Configure device settings
  • Receive warning/alarm notifications
  • Record device data history
  • Wi-Fi module integration
Features
Read full description

WatchPower is an iOS monitoring application which can monitor off-grid inverters via Wi-Fi module. Here are the application uses: 1. Display device status during normal operation. 2. Configure device setting after installation. 3. Notify user when a warning or alarm happened. 4. Allow user record device data history.

About

BMS

Monitor and manage your device's battery health with real-time data, historical records, and customizable alerts for over-charge, over-discharge, and temperature. Connect locally via Bluetooth or remotely via Wi-Fi to track battery status, cell performance, and potential issues.

Highlights
  • Real-time battery data (current, voltage, SOC, SOH)
  • Cell-level monitoring
  • Historical alarm and protection records
  • Customizable warning values
  • Bluetooth and Wi-Fi connectivity
  • Device sharing and management
Read full description

This app allows users to bind their devices easily and conveniently at anytime and anywhere,view battery health status, and record, diagnose and warn the real-time status of the battery.It is a good helper for users in operating and maintaining their devices. 【Parameter settings】 Preset warning values for over-charge, over-discharge , over-current, and over-temperature,When the battery status reaches the preset warning value, the system will send out an alarm signal to remind users to pay attention to the battery's status and performance. 【Real-time data】 Summary data: including battery current, voltage, number of cells, cycle times, SOC, SOH, temperature and other parameters; Cell data: including independent voltage, independent current, cycle times, SOC, SOH, temperature and other parameters of the cell; Voltage temperature: including the number of cells, cell voltage, cell temperature and other parameters; Status data: including protection, indication, control, fault, battery balance, alarm and other status. 【Historical data】 Record the alarm state, protection state, fault occurrence state and development process of the battery history,which can help the users to understand the state and performance of the battery. 【Connection method】 Local control: Through Bluetooth communication, no need to log in with an account, directly search for nearby Bluetooth signals, one-to-one connection, ready to use; Remote control: through WIFI communication,need to register an account to log in, the APP and the device will automatically perform network distribution operations, and bind the account and device. 【My device】 Forgot password: reset password through email; Edit device: Long press the device item, the edit menu will pop up at the bottom, you can modify the device nickname or delete the device; Share device: Long press the device item, the device administrator who first configures the network and binds the account, can generate a QR code for the device for other users to scan the code to add.

Screenshots

WatchPower4 screens
BMS4 screens

Verdict

The call

The clearest difference is rating: BMS at 5.0 against WatchPower's 2.5. WatchPower's advantage is ratings volume (73 vs 1) and iOS requirement (11.0 vs 15.0). On price, review sentiment, update cadence and ads 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

BMS holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: WatchPower has 73 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 17% of WatchPower's written reviews are positive against 20% of BMS's.

UpkeepUpdate frequency

WatchPower ships an update every 3 months, BMS every 2 months. The most recent releases landed on October 14, 2026 and September 23, 2026 respectively.

Scorecard3 real differences · 7 level
WatchPower versus BMS: the parameters behind the verdict, then further details
ParameterWatchPowerBMS
PriceFreeFree
Rating2.5 (73 ratings)5.0 (1 ratings) — better
Positive reviews17.2% of reviews20.0% of reviews — better
Number of ratings73 — better1
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size22 MB40 MB
Age rating4+17+
Developer祥梯 孟秀丽 唐

Customer experience

WatchPower

All ratings73 ratings
Positive28.8%
Neutral13.7%
Negative57.5%
Written reviews273 reviews
Positive17.2%
Neutral16.5%
Negative66.3%

BMS

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive20.0%
Neutral60.0%
Negative20.0%

Bugs and requests

WatchPower

Reported bugs

3 issues
  • Devices disappearing from the app
  • Incorrect battery capacity and power readings
  • Crashes and freezes when trying to access data

Requested features

5 requests
  • Add real-time monitoring and updates
  • Improve user interface and add more visualizations
  • Implement push notifications for important events
  • Allow password recovery and account management
  • Add support for Bluetooth connectivity

BMS

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

WatchPower

No in-app purchases

None

BMS

No in-app purchases

Questions

Is WatchPower free?
WatchPower is free to download, with no in-app purchases.
Is BMS free?
BMS is free to download, with no in-app purchases.
Which has better reviews, WatchPower or BMS?
BMS is rated higher. WatchPower averages 2.5 out of 5 from 73 ratings, while BMS averages 5.0 from 1 ratings.
Do WatchPower or BMS have ads?
Neither WatchPower nor BMS shows ads.
Which is updated more often, WatchPower or BMS?
WatchPower ships an update every 3 months, and BMS every 2 months. Most recently, WatchPower was updated on October 14, 2026 and BMS on September 23, 2026.

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