# BMS Tool vs Battery Pack Assistant

The clearest difference is in-app purchases: Battery Pack Assistant at none against BMS Tool's 1. Battery Pack Assistant also leads on ads (none vs shown) and iOS requirement (9.0 vs 15.2). BMS Tool's advantage is update cadence (every 2 months vs every 5 months). On price and device support there is nothing between them.

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

BMS Tool ships an update every 2 months, Battery Pack Assistant every 5 months. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | BMS Tool | Battery Pack Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (7 ratings)](https://appshunter.io/ios/app/bms-tool/id1511343379/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 29 MB |
| Requires iOS | 15.2 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [e77code GmbH](https://appshunter.io/developer/1375405425) | [Anhui Udan Technology Co., Ltd.](https://appshunter.io/developer/1593792520) |

## 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 |


### Battery Pack Assistant

[App page](https://appshunter.io/ios/app/battery-pack-assistant/id1593792518)

**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 Battery Pack Assistant free?

Battery Pack Assistant is free to download, with no in-app purchases.

### Do BMS Tool or Battery Pack Assistant have ads?

BMS Tool shows ads; Battery Pack Assistant does not.

### Which is updated more often, BMS Tool or Battery Pack Assistant?

BMS Tool ships an update every 2 months, and Battery Pack Assistant every 5 months. Most recently, BMS Tool was updated on October 3, 2026 and Battery Pack Assistant on October 6, 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.*