Comparison

Overkill Solar vs EnerKey

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

EnerKey

Monitor and control your lithium battery system in real-time. View current status, historical data, and adjust protective parameters to ensure safe operation. Receive instant alerts for any abnormal conditions.

Highlights
  • Real-time battery monitoring
  • Historical data inquiry
  • Parameter setting
  • Alarm notifications
  • Voltage, current, and temperature display
Features
Read full description

Enerkey lithium battery management system (BMS) provides a range of convenient management and control functions that allow users to perform real-time monitoring, data querying, and parameter setting of their lithium battery via the app. Real-time monitoring: Users can view real-time data such as voltage, current, and temperature of the lithium battery BMS through the app, allowing them to promptly understand the battery's operational status. Historical data inquiry: Users can check the historical operation data of the lithium battery BMS, including battery capacity, charge times, cycle times, and temperature data, helping them better understand the usage of the battery and perform timely maintenance. Parameter setting: Users can set various parameters of the lithium battery BMS through the app, including overcharge protection, over-discharge protection, temperature protection, etc., to ensure the safe operation of the battery. Alarm notification: Users can receive real-time alarm notifications through the app when the lithium battery BMS encounters abnormal conditions, enabling them to handle the issue promptly and prevent accidents. We are committed to providing users with the best experience possible. Download and use our app today!

Screenshots

Overkill Solar4 screens
EnerKey3 screens

Verdict

The call

The clearest difference is rating: Overkill Solar at 4.7 against EnerKey's 3.0. Overkill Solar also leads on review sentiment (100% vs 75%) and ratings volume (16 vs 3). 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

Overkill Solar holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Overkill Solar has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of Overkill Solar's written reviews are positive against 75% of EnerKey's.

UpkeepUpdate frequency

Overkill Solar ships an update every 4 months, EnerKey every 2 months. The most recent releases landed on August 18, 2026 and June 1, 2026 respectively.

Scorecard3 real differences · 7 level
Overkill Solar versus EnerKey: the parameters behind the verdict, then further details
ParameterOverkill SolarEnerKey
PriceFreeFree
Rating4.7 (16 ratings) — better3.0 (3 ratings)
Positive reviews100.0% of reviews — better75.0% of reviews
Number of ratings16 — better3
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.412.0 — better
Further details — not scored
Size21 MB31 MB
Age rating4+4+
DeveloperOverkill Solar LLCShenzhen Jinwei Power Source Technology Co., Ltd

Customer experience

Overkill Solar

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

EnerKey

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews4 reviews
Positive75.0%
Neutral25.0%
Negative0.0%

In-app purchases

None

Overkill Solar

No in-app purchases

None

EnerKey

No in-app purchases

Questions

Is Overkill Solar free?
Overkill Solar is free to download, with no in-app purchases.
Is EnerKey free?
EnerKey is free to download, with no in-app purchases.
Which has better reviews, Overkill Solar or EnerKey?
Overkill Solar is rated higher. Overkill Solar averages 4.7 out of 5 from 16 ratings, while EnerKey averages 3.0 from 3 ratings.
Do Overkill Solar or EnerKey have ads?
Neither Overkill Solar nor EnerKey shows ads.
Which is updated more often, Overkill Solar or EnerKey?
Overkill Solar ships an update every 4 months, and EnerKey every 2 months. Most recently, Overkill Solar was updated on August 18, 2026 and EnerKey on June 1, 2026.

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