# BMS Tool vs UltimatronFrance

The clearest difference is review sentiment: BMS Tool at 71% against UltimatronFrance's 19%. UltimatronFrance'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. UltimatronFrance asks for nothing beyond the download.

BMS Tool ships an update every 6 weeks, UltimatronFrance every 3 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | BMS Tool | UltimatronFrance |
| --- | --- | --- |
| 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** | 18.8% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 21 MB | 71 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [e77code GmbH](https://appshunter.io/developer/1375405425) | [ULTIMATRON FRANCE](https://appshunter.io/developer/1544036037) |

## 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, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### UltimatronFrance

[App page](https://appshunter.io/ios/app/ultimatronfrance/id1546832412)

Monitor your battery's health in real-time, tracking temperature, current, and voltage. Receive alarms for equalization and fault reminders from the protection system. Access historical battery parameter data.

**Highlights:** Real-time battery temperature monitoring, Real-time current and voltage monitoring, Battery equalization alarms, Protection system fault reminders, Historical battery parameter retrieval

**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 UltimatronFrance free?

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

### Do BMS Tool or UltimatronFrance have ads?

BMS Tool shows ads; UltimatronFrance does not.

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

BMS Tool ships an update every 6 weeks, and UltimatronFrance every 3 weeks. Most recently, BMS Tool was updated on November 7, 2026 and UltimatronFrance on November 3, 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.*