Comparison

Overkill Solar vs BMS

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

Head to head
About

Overkill Solar

This app connects to a solar battery management system to provide detailed monitoring and control. Users can track cell voltage, capacity, current, and manage charging/discharging ports. It also offers advanced configuration options for calibration, balancing, and protection settings.

Highlights
  • Monitor cell voltage and capacity
  • Control charging and discharging ports
  • Calibrate voltage and current
  • Configure balancer and protection values
  • Log voltage, current, and power
  • Monitor BMS alarms and temperature
Features
Read full description

Overkill Solar iOS App allows users to connect with the Overkill Solar Battery Management System (BMS). It can monitor voltage of the cells, total capacity, charging and discharging current, and switch the charging and discharging ports on or off. Features: - change bluetooth advertising name - unlock hardware protected BMS - save or load BMS configurations - calibrate cells voltage and charging or discharging current - log maximum or minimum voltage, current and power - enable and configure the balancer - modify the capacity settings - monitor temperature - monitor BMS alarms - import and export .fig files - set level 2 and 3 advanced protection values

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

Overkill Solar4 screens
BMS4 screens

Verdict

The call

The clearest difference is review sentiment: Overkill Solar at 100% against BMS's 20%. Overkill Solar also leads on ratings volume (16 vs 1) and iOS requirement (13.4 vs 15.0). BMS's advantage is rating (5.0 vs 4.7). On price, update cadence, ads and in-app purchases 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 4.7. That said, the two scores are not equally well evidenced: Overkill Solar has 16 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of Overkill Solar's written reviews are positive against 20% of BMS's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Overkill Solar ships an update every 4 months, BMS every 2 months. The most recent releases landed on September 28, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 6 level
Overkill Solar versus BMS: the parameters behind the verdict, then further details
ParameterOverkill SolarBMS
PriceFreeFree
Rating4.7 (16 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews — better20.0% of reviews
Number of ratings16 — better1
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.4 — better15.0
Further details — not scored
Size21 MB40 MB
Age rating4+17+
DeveloperOverkill Solar LLC秀丽 唐

Customer experience

Overkill Solar

All ratings16 ratings
Positive87.5%
Neutral12.5%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

BMS

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

In-app purchases

None

Overkill Solar

No in-app purchases

None

BMS

No in-app purchases

Questions

Is Overkill Solar free?
Overkill Solar 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, Overkill Solar or BMS?
BMS is rated higher. Overkill Solar averages 4.7 out of 5 from 16 ratings, while BMS averages 5.0 from 1 ratings.
Do Overkill Solar or BMS have ads?
Neither Overkill Solar nor BMS shows ads.
Which is updated more often, Overkill Solar or BMS?
Overkill Solar ships an update every 4 months, and BMS every 2 months. Most recently, Overkill Solar was updated on September 28, 2026 and BMS on September 23, 2026.

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