# BMS电池卫士 vs RfnBMS

BMS电池卫士 and RfnBMS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

BMS电池卫士 ships an update every 44 months, RfnBMS every 24 months. The most recent releases landed on May 14, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | BMS电池卫士 | RfnBMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 44 months | **Every 24 months** |
| Size | 9 MB | 2 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [锦欢 林](https://appshunter.io/developer/1467148377) | [亚妹 李](https://appshunter.io/developer/1621258401) |

## What reviewers say

### BMS电池卫士

[App page](https://appshunter.io/ios/app/bms/id1501118106)

**Features:** macOS Compatibility

**In-app purchases:** none


### RfnBMS

[App page](https://appshunter.io/ios/app/rfnbms/id1621684342)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BMS电池卫士 free?

BMS电池卫士 is free to download, with no in-app purchases.

### Is RfnBMS free?

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

### Do BMS电池卫士 or RfnBMS have ads?

Neither BMS电池卫士 nor RfnBMS shows ads.

### Which is updated more often, BMS电池卫士 or RfnBMS?

BMS电池卫士 ships an update every 44 months, and RfnBMS every 24 months. Most recently, BMS电池卫士 was updated on May 14, 2026 and RfnBMS on September 25, 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.*