# Overkill Solar vs BAT

The clearest difference is review sentiment: Overkill Solar at 100% against BAT's 0%. Overkill Solar also leads on rating (4.7 vs 1.0) and ads (none vs shown). On price, update cadence, in-app purchases and device support there is nothing between them.

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 1.0. 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 0% of BAT's.

Overkill Solar ships an update every 4 months, BAT every 3 months. The most recent releases landed on September 28, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Overkill Solar | BAT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (16 ratings)](https://appshunter.io/ios/app/overkill-solar/id6444233824/reviews)** | [1.0 (3 ratings)](https://appshunter.io/ios/app/bat-bms-pro/id6758682329/reviews) |
| Number of ratings | **16** | 3 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | **Free** | Ad-supported |
| Size | 21 MB | 18 MB |
| Requires iOS | **13.4** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Overkill Solar LLC](https://appshunter.io/developer/1653276724) | [Mouad Bousbaa](https://appshunter.io/developer/1868764561) |

## 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


### BAT

[App page](https://appshunter.io/ios/app/bat-bms-pro/id6758682329)

Monitor and manage your lithium batteries in real-time with instant access to battery health, charging status, voltage, current, and temperature. This app provides advanced diagnostics and a clear interface for various applications like RVs, solar systems, and EVs.

**Highlights:** Real-time battery monitoring, Battery dashboard (SOC, SOH, voltage, current), Individual cell monitoring, Temperature monitoring, Advanced diagnostics and fault detection, Runtime estimator, Clean and professional interface

**In-app purchases:** none


## Frequently asked questions

### Is Overkill Solar free?

Overkill Solar is free to download, with no in-app purchases.

### Is BAT free?

BAT is free to download, with no in-app purchases.

### Which has better reviews, Overkill Solar or BAT?

Overkill Solar is rated higher. Overkill Solar averages 4.7 out of 5 from 16 ratings, while BAT averages 1.0 from 3 ratings.

### Do Overkill Solar or BAT have ads?

BAT shows ads; Overkill Solar does not.

### Which is updated more often, Overkill Solar or BAT?

Overkill Solar ships an update every 4 months, and BAT every 3 months. Most recently, Overkill Solar was updated on September 28, 2026 and BAT on October 8, 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.*