# BMS电池卫士 vs yBMS

The clearest difference is update cadence: yBMS at every 13 months against BMS电池卫士's every 44 months. yBMS also leads on iOS requirement (11.0 vs 13.0). 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.

BMS电池卫士 ships an update every 44 months, yBMS every 13 months. The most recent releases landed on May 14, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | BMS电池卫士 | yBMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 44 months | **Every 13 months** |
| Size | 9 MB | 17 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [锦欢 林](https://appshunter.io/developer/1467148377) | [珉媛 杨](https://appshunter.io/developer/1538244691) |

## What reviewers say

### BMS电池卫士

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

**Features:** macOS Compatibility

**In-app purchases:** none


### yBMS

[App page](https://appshunter.io/ios/app/ybms/id1564433023)

**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 yBMS free?

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

### Do BMS电池卫士 or yBMS have ads?

Neither BMS电池卫士 nor yBMS shows ads.

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

BMS电池卫士 ships an update every 44 months, and yBMS every 13 months. Most recently, BMS电池卫士 was updated on May 14, 2026 and yBMS on September 14, 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.*