# JS Hearing vs BLUEDEER

The clearest difference is iOS requirement: BLUEDEER at 12.0 against JS Hearing's 16.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

JS Hearing ships an update every 9 days, BLUEDEER weekly. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | JS Hearing | BLUEDEER |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Size | 12 MB | 47 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nanjing Jusha Display Technology Co., Ltd.](https://appshunter.io/developer/1700633319) | [BOCOOLIFE](https://appshunter.io/developer/1799928767) |

## What reviewers say

### JS Hearing

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

**In-app purchases:** none


### BLUEDEER

[App page](https://appshunter.io/ios/app/bluedeer/id6759883802)

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

**In-app purchases:** none


## Frequently asked questions

### Is JS Hearing free?

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

### Is BLUEDEER free?

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

### Do JS Hearing or BLUEDEER have ads?

Neither JS Hearing nor BLUEDEER shows ads.

### Which is updated more often, JS Hearing or BLUEDEER?

JS Hearing ships an update every 9 days, and BLUEDEER weekly. Most recently, JS Hearing was updated on October 9, 2026 and BLUEDEER on October 15, 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.*