# EWATT vs Ultra BMS

The clearest difference is update cadence: Ultra BMS at weekly against EWATT's every 2 months. 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.

EWATT ships an update every 2 months, Ultra BMS weekly. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | EWATT | Ultra BMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 24 MB | 30 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [帆 刘](https://appshunter.io/developer/1706245535) | [新平 罗](https://appshunter.io/developer/1831685658) |

## What reviewers say

### EWATT

[App page](https://appshunter.io/ios/app/ewatt-bms/id6464585303)

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

**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 EWATT free?

EWATT 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 EWATT or Ultra BMS have ads?

Neither EWATT nor Ultra BMS shows ads.

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

EWATT ships an update every 2 months, and Ultra BMS weekly. Most recently, EWATT was updated on October 9, 2026 and Ultra BMS on October 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.*