Overkill Solar vs EG4 BMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
EG4 BMS
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The EG4 BMS App is an application designed for battery management, suitable for both household and industrial power management, storage, and related functions. Compatible with EG4's 314Ah WallMount battery series
Screenshots
Verdict
The clearest difference is update cadence: EG4 BMS at every 3 days against Overkill Solar's every 4 months. EG4 BMS also leads on iOS requirement (11.0 vs 13.4). On price, ads, in-app purchases and device support 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 ships an update every 4 months, EG4 BMS every 3 days. The most recent releases landed on August 18, 2026 and September 5, 2026 respectively.
| Parameter | Overkill Solar | EG4 BMS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (16 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 16 — better | — |
| Update frequency | Every 4 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.4 | 11.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | Overkill Solar LLC | eg4 |
In-app purchases
Overkill Solar
No in-app purchases
EG4 BMS
No in-app purchases
