# Overkill Solar vs BMS

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.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

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.

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.

## The numbers

| Metric | Overkill Solar | BMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (16 ratings)](https://appshunter.io/ios/app/overkill-solar/id6444233824/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bms-tool/id6471949475/reviews)** |
| Number of ratings | **16** | 1 |
| Positive reviews | **100.0% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 21 MB | 40 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Overkill Solar LLC](https://appshunter.io/developer/1653276724) | [秀丽 唐](https://appshunter.io/developer/1715570419) |

## What reviewers say

### Overkill Solar

[App page](https://appshunter.io/ios/app/overkill-solar/id6444233824)

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:** macOS Compatibility

**In-app purchases:** none


### BMS

[App page](https://appshunter.io/ios/app/bms-tool/id6471949475)

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

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*