# Xiaoxiang BMS vs UD Mobile

The clearest difference is rating: UD Mobile at 4.1 against Xiaoxiang BMS's 3.6. UD Mobile also leads on in-app purchases (none vs 1) and ads (none vs shown). On price, review sentiment, ratings volume and device support there is nothing between them.

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

UD Mobile holds the better App Store score, 4.1 against 3.6. Both are backed by a comparable volume of ratings — 67 and 37 respectively. Written reviews complicate that: 55% of Xiaoxiang BMS's written reviews are positive against 50% of UD Mobile's, so the app with the better star average is not the one people write more warmly about.

Xiaoxiang BMS ships an update every 4 weeks, UD Mobile weekly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Xiaoxiang BMS | UD Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (67 ratings)](https://appshunter.io/ios/app/xiaoxiang-bms/id1375405426/reviews) | **[4.1 (37 ratings)](https://appshunter.io/ios/app/ud-mobile/id1550618148/reviews)** |
| Number of ratings | **67** | 37 |
| Positive reviews | **54.9% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 105 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [e77code GmbH](https://appshunter.io/developer/1375405425) | [Universal Devices, Inc.](https://appshunter.io/developer/1550618150) |

## What reviewers say

### Xiaoxiang BMS

[App page](https://appshunter.io/ios/app/xiaoxiang-bms/id1375405426)

Monitor and manage your Bluetooth-enabled battery management systems (BMS) for Li-Ion and LiFePo4 packs. Track cell voltage, capacity, current, and temperature. Switch battery outputs on/off and configure settings remotely.

**Highlights:** Monitor cell voltage, capacity, current, and temperature, Switch battery output on/off, Calibrate cell voltage and current, Configure balancer and BMS capacity, Change Bluetooth advertised name, Unlock hardware protected BMS (firmware v20+), Set PIN code for BMS access

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $7.99 | one-time |


### UD Mobile

[App page](https://appshunter.io/ios/app/ud-mobile/id1550618148)

Control your Universal Devices home automation controllers, including eisy, Polisy, and ISY994i. Manage Insteon, Z-Wave, Zigbee devices, programs, and network resources locally or remotely. Integrates with ISY Portal for seamless remote access.

**Highlights:** Control Universal Devices controllers, Manage Insteon, Z-Wave, Zigbee devices, Control programs and variables, Local and remote connection options, ISY Portal integration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Xiaoxiang BMS free?

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

### Is UD Mobile free?

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

### Which has better reviews, Xiaoxiang BMS or UD Mobile?

UD Mobile is rated higher. Xiaoxiang BMS averages 3.6 out of 5 from 67 ratings, while UD Mobile averages 4.1 from 37 ratings.

### Do Xiaoxiang BMS or UD Mobile have ads?

Xiaoxiang BMS shows ads; UD Mobile does not.

### Which is updated more often, Xiaoxiang BMS or UD Mobile?

Xiaoxiang BMS ships an update every 4 weeks, and UD Mobile weekly. Most recently, Xiaoxiang BMS was updated on November 2, 2026 and UD Mobile 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.*