# BMS Tool vs BAT

The clearest difference is review sentiment: BMS Tool at 71% against BAT's 24%. BMS Tool also leads on rating (3.9 vs 3.2). BAT's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence 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 3.2. That said, the two scores are not equally well evidenced: BAT has 61 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 71% of BMS Tool's written reviews are positive against 24% of BAT's.

BMS Tool ships an update every 2 months, BAT every 3 weeks. The most recent releases landed on September 16, 2026 and September 9, 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)** | [3.2 (61 ratings)](https://appshunter.io/ios/app/bat-bms/id1611741274/reviews) |
| Number of ratings | 7 | **61** |
| Positive reviews | **71.4% of reviews** | 24.1% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 9 MB | 9 MB |
| Requires iOS | 15.2 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [e77code GmbH](https://appshunter.io/developer/1375405425) | [Shenzhen Grenergy Technology Co.,Ltd.](https://appshunter.io/developer/1602312075) |

## 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/id1611741274)

Monitor your smart Bluetooth lithium batteries wirelessly from your phone. Track key metrics like state of charge, voltage, current, and temperature. Connect to multiple batteries simultaneously and view their data.

**Highlights:** Wireless Bluetooth connection, Track cycle life, Display SOC, voltage, current, Monitor cell voltage and temperature, Connect to multiple batteries

**Features:** Vision Pro support

**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 3.2 from 61 ratings.

### Do BMS Tool or BAT have ads?

BMS Tool shows ads; BAT does not.

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

BMS Tool ships an update every 2 months, and BAT every 3 weeks. Most recently, BMS Tool was updated on September 16, 2026 and BAT on September 9, 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.*