# BMS Tool vs BAT

The clearest difference is review sentiment: BMS Tool at 71% against BAT's 0%. BMS Tool also leads on rating (3.9 vs 1.0) and update cadence (every 2 months vs every 3 months). BAT's advantage is in-app purchases (none vs 1). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. BMS Tool sells 1 one-off in-app purchase. BAT asks for nothing beyond the download.

BMS Tool holds the better App Store score, 3.9 against 1.0. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews point the same way: 71% of BMS Tool's written reviews are positive against 0% of BAT's.

BMS Tool ships an update every 2 months, BAT every 3 months. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | BMS Tool | BAT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (7 ratings)](https://appshunter.io/ios/app/bms-tool/id1511343379/reviews)** | [1.0 (3 ratings)](https://appshunter.io/ios/app/bat-bms-pro/id6758682329/reviews) |
| Number of ratings | **7** | 3 |
| Positive reviews | **71.4% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 9 MB | 18 MB |
| Requires iOS | **15.2** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [e77code GmbH](https://appshunter.io/developer/1375405425) | [Mouad Bousbaa](https://appshunter.io/developer/1868764561) |

## What reviewers say

### BMS Tool

[App page](https://appshunter.io/ios/app/bms-tool/id1511343379)

Monitor your battery management systems via Bluetooth. Supports multiple BMS types including Liontron, XiaoXiang, ANT, and Wattstunde. Offers a screen always-on mode and macOS compatibility.

**Highlights:** Screen Always ON mode, Multiple BMS support, Liontron BMS read-only, XiaoXiang BMS read-only, ANT BMS read-only, Wattstunde LiFePo4 read-only, macOS support

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### 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 BMS Tool free?

BMS Tool is free to download, with in-app purchases available.

### Is BAT free?

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

### Which has better reviews, BMS Tool or BAT?

BMS Tool is rated higher. BMS Tool averages 3.9 out of 5 from 7 ratings, while BAT averages 1.0 from 3 ratings.

### Do BMS Tool or BAT have ads?

Both BMS Tool and BAT show ads.

### Which is updated more often, BMS Tool or BAT?

BMS Tool ships an update every 2 months, and BAT every 3 months. Most recently, BMS Tool was updated on October 3, 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.*