# BMS Tool vs Pro BMS

The clearest difference is rating: BMS Tool at 3.9 against Pro BMS's 1.0. BMS Tool also leads on ratings volume (7 vs 1). Pro BMS's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

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

BMS Tool holds the better App Store score, 3.9 against 1.0. That said, the two scores are not equally well evidenced: BMS Tool has 7 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 3, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | BMS Tool | Pro BMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (7 ratings)](https://appshunter.io/ios/app/bms-tool/id1511343379/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/pro-bms/id6474855560/reviews) |
| Number of ratings | **7** | 1 |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 9 MB | 35 MB |
| Requires iOS | **15.2** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [e77code GmbH](https://appshunter.io/developer/1375405425) | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) |

## 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 |


### Pro BMS

[App page](https://appshunter.io/ios/app/pro-bms/id6474855560)

This utility app measures and displays real-time battery parameters like voltage, current, and capacity. It offers customizable protection functions and allows for voltage/current curve export. Control and monitoring are available via a mobile app.

**Highlights:** Real-time voltage and current measurement, Power, charge, and discharge capacity monitoring, Customizable protection functions (overvoltage, overcurrent, etc.), Color LCD display of comprehensive data, Voltage and current curve display and export, Mobile app control and communication

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BMS Tool free?

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

### Is Pro BMS free?

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

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

BMS Tool is rated higher. BMS Tool averages 3.9 out of 5 from 7 ratings, while Pro BMS averages 1.0 from 1 ratings.

### Do BMS Tool or Pro BMS have ads?

BMS Tool shows ads; Pro BMS does not.

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

BMS Tool ships an update every 2 months, and Pro BMS every 2 months. Most recently, BMS Tool was updated on October 3, 2026 and Pro BMS on September 27, 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.*