# Fusion BMS vs Yi BMS

The clearest difference is ads: Fusion BMS at none against Yi BMS's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 15, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Fusion BMS | Yi BMS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | — |
| Size | 101 MB | 32 MB |
| Requires iOS | **11.0** | 12.0 |
| 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) | [Shenzhen Yifang new energy technology Co., Ltd](https://appshunter.io/developer/1727822039) |

## 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


### Yi BMS

[App page](https://appshunter.io/ios/app/yi-bms/id6476804812)

**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 Yi BMS free?

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

### Do Fusion BMS or Yi BMS have ads?

Yi BMS shows ads; Fusion BMS does not.

### Which is updated more often, Fusion BMS or Yi BMS?

Fusion BMS ships an update every 3 months, and Yi BMS every 3 months. Most recently, Fusion BMS was updated on September 15, 2026 and Yi BMS on September 21, 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.*