# Xiaoxiang BMS vs FireShield

The clearest difference is in-app purchases: FireShield at none against Xiaoxiang BMS's 1. FireShield also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

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

Xiaoxiang BMS ships an update every 3 weeks, FireShield every 6 weeks. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Xiaoxiang BMS | FireShield |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (67 ratings)](https://appshunter.io/ios/app/xiaoxiang-bms/id1375405426/reviews)** | — |
| Number of ratings | **67** | — |
| Positive reviews | 54.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 28 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [e77code GmbH](https://appshunter.io/developer/1375405425) | [Karsten Schuler](https://appshunter.io/developer/1882490479) |

## 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 |


### FireShield

[App page](https://appshunter.io/ios/app/fireshield/id6760045774)

**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 FireShield free?

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

### Do Xiaoxiang BMS or FireShield have ads?

Xiaoxiang BMS shows ads; FireShield does not.

### Which is updated more often, Xiaoxiang BMS or FireShield?

Xiaoxiang BMS ships an update every 3 weeks, and FireShield every 6 weeks. Most recently, Xiaoxiang BMS was updated on November 11, 2026 and FireShield on October 31, 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.*