# Yi BMS vs Ultra BMS

The clearest difference is ads: Ultra BMS at none against Yi BMS's shown. Ultra BMS also leads on update cadence (weekly vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Yi BMS ships an update every 3 months, Ultra BMS weekly. The most recent releases landed on October 8, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Yi BMS | Ultra BMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Weekly** |
| Size | 32 MB | 30 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Yifang new energy technology Co., Ltd](https://appshunter.io/developer/1727822039) | [新平 罗](https://appshunter.io/developer/1831685658) |

## What reviewers say

### Yi BMS

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Ultra BMS

[App page](https://appshunter.io/ios/app/ultra-bms/id6752113906)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Yi BMS free?

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

### Is Ultra BMS free?

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

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

Yi BMS shows ads; Ultra BMS does not.

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

Yi BMS ships an update every 3 months, and Ultra BMS weekly. Most recently, Yi BMS was updated on October 8, 2026 and Ultra BMS on September 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*