# CZI Sound vs Batrium BMI

The clearest difference is update cadence: Batrium BMI at every 6 weeks against CZI Sound's every 8 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.

CZI Sound ships an update every 8 months, Batrium BMI every 6 weeks. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | CZI Sound | Batrium BMI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/batrium-bmi/id6475325576/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 64 MB | 61 MB |
| Requires iOS | 13.0 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Chengzhi Intelligent Machine Technology Co., Ltd.](https://appshunter.io/developer/1675437495) | [Batrium Technologies Pty Ltd](https://appshunter.io/developer/1489556424) |

## What reviewers say

### CZI Sound

[App page](https://appshunter.io/ios/app/czi-sound/id6446013579)

**Features:** macOS Compatibility

**In-app purchases:** none


### Batrium BMI

[App page](https://appshunter.io/ios/app/batrium-bmi/id6475325576)

Monitor the real-time status of your home or large capacity battery system. View crucial battery parameters like cell voltage, overall voltage, current flow, and internal BMS temperature.

**Highlights:** Real-time battery parameter updates, Cell voltage monitoring, Battery voltage display, Current flow tracking, Internal BMS temperature

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

**In-app purchases:** none


## Frequently asked questions

### Is CZI Sound free?

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

### Is Batrium BMI free?

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

### Do CZI Sound or Batrium BMI have ads?

Neither CZI Sound nor Batrium BMI shows ads.

### Which is updated more often, CZI Sound or Batrium BMI?

CZI Sound ships an update every 8 months, and Batrium BMI every 6 weeks. Most recently, CZI Sound was updated on October 5, 2026 and Batrium BMI on October 7, 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.*