Comparison

Overkill Solar vs Whisper Lithium

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

Whisper Lithium

This app monitors and manages lithium battery systems in real-time. It displays critical battery parameters, alerts users to potential issues like over-temperature or voltage anomalies, and helps prolong battery life and enhance pack stability. It also supports viewing multiple battery statuses and offers online assistance.

Highlights
  • Real-time voltage, current, and power display
  • Single battery voltage and alarm status
  • Cell comparison and balance display
  • Temperature and short circuit warnings
  • Warning event logging
  • Support for multiple battery viewing
  • Online assistance
Features
Read full description

Whisper Lithium management system monitors battery status, collects, stores, and processes information during battery operation in real time, exchanges information through Bluetooth, solves key issues of safety, ease of use, and service life of lithium battery systems, and prolongs battery life Life, enhance the stability of the battery pack. 1. Display real-time voltage, current, power, internal resistance and other parameter values. 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. Each data comparison of the battery cell, the voltage difference. Maximum voltage cell Minimum voltage cell. And the display of cell balance 4. Cell temperature warning. Real-time alarm for over temperature, short circuit, over voltage, under voltage 5. Record the warnings that occur at each moment. 6. Abnormal situation reporting function 7. Support to view the cell status of multiple batteries at the same time. 8. Compatible with different models of products 9.Ask for help online. For online detection equipment 10.Cloud adjustment parameters after sales Best Regards !

Screenshots

Overkill Solar4 screens
Whisper Lithium4 screens

Verdict

The call

The clearest difference is rating: Overkill Solar at 4.7 against Whisper Lithium's 3.0. Overkill Solar also leads on ratings volume (16 vs 4) and iOS requirement (13.4 vs 15.6). Whisper Lithium's advantage is update cadence (every 3 weeks vs every 4 months). On price, review sentiment, 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. Both are backed by a comparable volume of ratings — 16 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Overkill Solar ships an update every 4 months, Whisper Lithium every 3 weeks. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 6 level
Overkill Solar versus Whisper Lithium: the parameters behind the verdict, then further details
ParameterOverkill SolarWhisper Lithium
PriceFreeFree
Rating4.7 (16 ratings) — better3.0 (4 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings16 — better4
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.4 — better15.6
Further details — not scored
Size21 MB32 MB
Age rating4+4+
DeveloperOverkill Solar LLC江西达伙网络科技有限公司

Customer experience

Overkill Solar

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

Whisper Lithium

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Overkill Solar

No in-app purchases

None

Whisper Lithium

No in-app purchases

Questions

Is Overkill Solar free?
Overkill Solar is free to download, with no in-app purchases.
Is Whisper Lithium free?
Whisper Lithium is free to download, with no in-app purchases.
Which has better reviews, Overkill Solar or Whisper Lithium?
Overkill Solar is rated higher. Overkill Solar averages 4.7 out of 5 from 16 ratings, while Whisper Lithium averages 3.0 from 4 ratings.
Do Overkill Solar or Whisper Lithium have ads?
Neither Overkill Solar nor Whisper Lithium shows ads.
Which is updated more often, Overkill Solar or Whisper Lithium?
Overkill Solar ships an update every 4 months, and Whisper Lithium every 3 weeks. Most recently, Overkill Solar was updated on October 14, 2026 and Whisper Lithium on October 7, 2026.

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