# FMC BMS vs Pro BMS

The clearest difference is update cadence: FMC BMS at monthly against Pro BMS's every 2 months. Pro BMS's advantage is iOS requirement (15.6 vs 18.6). On price, ads, 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.

FMC BMS ships an update monthly, Pro BMS every 2 months. The most recent releases landed on October 4, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | FMC BMS | Pro BMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/pro-bms/id6474855560/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | — | Free |
| Size | 44 MB | 35 MB |
| Requires iOS | 18.6 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pegasus Automation](https://appshunter.io/developer/1446593582) | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) |

## What reviewers say

### FMC BMS

[App page](https://appshunter.io/ios/app/fmc-bms/id1481682000)

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

**In-app purchases:** none


### Pro BMS

[App page](https://appshunter.io/ios/app/pro-bms/id6474855560)

This utility app measures and displays real-time battery parameters like voltage, current, and capacity. It offers customizable protection functions and allows for voltage/current curve export. Control and monitoring are available via a mobile app.

**Highlights:** Real-time voltage and current measurement, Power, charge, and discharge capacity monitoring, Customizable protection functions (overvoltage, overcurrent, etc.), Color LCD display of comprehensive data, Voltage and current curve display and export, Mobile app control and communication

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FMC BMS free?

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

### Is Pro BMS free?

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

### Do FMC BMS or Pro BMS have ads?

Neither FMC BMS nor Pro BMS shows ads.

### Which is updated more often, FMC BMS or Pro BMS?

FMC BMS ships an update monthly, and Pro BMS every 2 months. Most recently, FMC BMS was updated on October 4, 2026 and Pro BMS on September 27, 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.*