# Batteries vs Hearing test instruments

The clearest difference is update cadence: Hearing test instruments at every 5 weeks against Batteries's every 5 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.

Batteries ships an update every 5 months, Hearing test instruments every 5 weeks. The most recent releases landed on September 16, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Batteries | Hearing test instruments |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 weeks** |
| Size | 26 MB | 48 MB |
| Requires iOS | **12.0** | 12.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [深圳市集智电子有限公司](https://appshunter.io/developer/1655111205) | [Cemho Medical Technology (Guangdong) Co., Ltd](https://appshunter.io/developer/1643075084) |

## What reviewers say

### Batteries

[App page](https://appshunter.io/ios/app/batteries/id6448932800)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hearing test instruments

[App page](https://appshunter.io/ios/app/hearing-test-instruments/id6736933056)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Batteries free?

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

### Is Hearing test instruments free?

Hearing test instruments is free to download, with no in-app purchases.

### Do Batteries or Hearing test instruments have ads?

Neither Batteries nor Hearing test instruments shows ads.

### Which is updated more often, Batteries or Hearing test instruments?

Batteries ships an update every 5 months, and Hearing test instruments every 5 weeks. Most recently, Batteries was updated on September 16, 2026 and Hearing test instruments on May 17, 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.*