# E Tool vs 玉成蓝牙工具

The clearest difference is update cadence: E Tool at monthly against 玉成蓝牙工具's every 4 months. E Tool also leads on iOS requirement (9.0 vs 15.0). 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.

E Tool ships an update monthly, 玉成蓝牙工具 every 4 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | E Tool | 玉成蓝牙工具 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Size | 14 MB | 30 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [建周 李](https://appshunter.io/developer/1282823592) | [Shenzhen Yucheng Innovation Technology Co., Ltd.](https://appshunter.io/developer/1439392937) |

## What reviewers say

### E Tool

[App page](https://appshunter.io/ios/app/e-tool/id1488424681)

**Features:** macOS Compatibility

**In-app purchases:** none


### 玉成蓝牙工具

[App page](https://appshunter.io/ios/app/id1515844806)

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

**In-app purchases:** none


## Frequently asked questions

### Is E Tool free?

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

### Is 玉成蓝牙工具 free?

玉成蓝牙工具 is free to download, with no in-app purchases.

### Do E Tool or 玉成蓝牙工具 have ads?

Neither E Tool nor 玉成蓝牙工具 shows ads.

### Which is updated more often, E Tool or 玉成蓝牙工具?

E Tool ships an update monthly, and 玉成蓝牙工具 every 4 months. Most recently, E Tool was updated on October 26, 2026 and 玉成蓝牙工具 on October 29, 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.*