PowerMon X vs Overkill Solar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PowerMon X
Monitor battery levels and performance of compatible devices via Bluetooth. View redesigned log data charts and access improved screens. Requires a physical PowerMon device.
- Redesigned log data charts
- Improved screens
- Compatibility with newest devices
- Compatibility with new firmware
- Bluetooth monitoring
- Requires physical device
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The PowerMon X app adds redesigned log data charts, improved screens, compatibility with the newest mobile devices and operating systems and compatibility with a new generation of devices and firmware versions. The application requires a physical PowerMon device which can be purchased from our store: www.thornwave.com. Please visit us online! If you'd like to test before you buy, click on this link after you install the app and it will connect you to a WiFi demo device located in our lab. https://applinks.thornwave.com/?n=DemoUnit&s=36129e86da98dda9&h=40&c=HzotUykUSvP/Ox0xdUpYVw%3D%3D&k=//////////////////////////////////////////8%3D
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.
- 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
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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
Screenshots
Verdict
The clearest difference is rating: Overkill Solar at 4.7 against PowerMon X's 4.0. Overkill Solar also leads on review sentiment (100% vs 67%) and ratings volume (16 vs 5). PowerMon X's advantage is update cadence (every 3 weeks vs every 4 months). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Overkill Solar holds the better App Store score, 4.7 against 4.0. Both are backed by a comparable volume of ratings — 5 and 16 respectively. Written reviews point the same way: 67% of PowerMon X's written reviews are positive against 100% of Overkill Solar's.
PowerMon X ships an update every 3 weeks, Overkill Solar every 4 months. The most recent releases landed on September 10, 2026 and August 18, 2026 respectively.
| Parameter | PowerMon X | Overkill Solar |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (5 ratings) | 4.7 (16 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 | 16 — better |
| Update frequency | Every 3 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.4 — better |
| Further details — not scored | ||
| Size | 10 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Thornwave Labs Inc | Overkill Solar LLC |
Customer experience
PowerMon X
Overkill Solar
In-app purchases
PowerMon X
No in-app purchases
Overkill Solar
No in-app purchases
