# Otoadd Control vs JS Hearing

The clearest difference is update cadence: JS Hearing at every 9 days against Otoadd Control's every 3 weeks. 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.

Otoadd Control ships an update every 3 weeks, JS Hearing every 9 days. The most recent releases landed on September 19, 2026 and February 23, 2026 respectively.

## The numbers

| Metric | Otoadd Control | JS Hearing |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Size | 42 MB | 12 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [RelaJet Tech (Taiwan) Co., Ltd.](https://appshunter.io/developer/1492983723) | [Nanjing Jusha Display Technology Co., Ltd.](https://appshunter.io/developer/1700633319) |

## What reviewers say

### Otoadd Control

[App page](https://appshunter.io/ios/app/otoadd-control/id6714463154)

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

**In-app purchases:** none


### JS Hearing

[App page](https://appshunter.io/ios/app/js-hearing/id6751797755)

**In-app purchases:** none


## Frequently asked questions

### Is Otoadd Control free?

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

### Is JS Hearing free?

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

### Do Otoadd Control or JS Hearing have ads?

Neither Otoadd Control nor JS Hearing shows ads.

### Which is updated more often, Otoadd Control or JS Hearing?

Otoadd Control ships an update every 3 weeks, and JS Hearing every 9 days. Most recently, Otoadd Control was updated on September 19, 2026 and JS Hearing on February 23, 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.*