# Fusion BMS vs Big Beard Battery

The clearest difference is iOS requirement: Fusion BMS at 11.0 against Big Beard Battery's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Fusion BMS ships an update every 3 months, Big Beard Battery every 6 months. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Fusion BMS | Big Beard Battery |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/big-beard-battery/id6460975772/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 101 MB | 35 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [江西达伙网络科技有限公司](https://appshunter.io/developer/1234844673) | [鹏 张](https://appshunter.io/developer/1425725690) |

## What reviewers say

### Fusion BMS

[App page](https://appshunter.io/ios/app/fusion-bms/id6443984576)

This intelligent management system monitors battery status, collects real-time operational data, and exchanges information with external devices. It enhances the safety, usability, and lifespan of lithium battery systems by providing detailed parameter displays and critical alerts.

**Highlights:** Real-time voltage, current, and power monitoring, Single cell voltage and alarm status display, Cell comparison and balance display, Temperature, short-circuit, over/under-voltage alarms, Warning event logging, Compatibility with various battery brands

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

**In-app purchases:** none


### Big Beard Battery

[App page](https://appshunter.io/ios/app/big-beard-battery/id6460975772)

Monitor and control your battery's active equalizer settings remotely via Bluetooth. View real-time status and adjust operating parameters for optimal performance.

**Highlights:** Real-time status monitoring, Operating parameter settings, Bluetooth connectivity, Active equalizer control

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fusion BMS free?

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

### Is Big Beard Battery free?

Big Beard Battery is free to download, with no in-app purchases.

### Do Fusion BMS or Big Beard Battery have ads?

Neither Fusion BMS nor Big Beard Battery shows ads.

### Which is updated more often, Fusion BMS or Big Beard Battery?

Fusion BMS ships an update every 3 months, and Big Beard Battery every 6 months. Most recently, Fusion BMS was updated on October 2, 2026 and Big Beard Battery on October 8, 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.*