# 电牙 vs PUWEI3D

电牙 and PUWEI3D are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 电牙 sells 3 one-off in-app purchases and PUWEI3D sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

电牙 ships an update weekly, PUWEI3D fortnightly. The most recent releases landed on July 7, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 电牙 | PUWEI3D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Size | 45 MB | 115 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Change the World (Shenzhen) Artificial Intelligence Technology Co., Ltd](https://appshunter.io/developer/1824623538) | [Beijing Puwei Longxiang Technology Development Co., Ltd.](https://appshunter.io/developer/1606328093) |

## What reviewers say

### 电牙

[App page](https://appshunter.io/ios/app/id6748213733)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10小时转写时长包 | $3.99 | one-time |
| 30小时转写时长包 | $9.99 | one-time |
| 100小时转写时长包 | $29.99 | one-time |


### PUWEI3D

[App page](https://appshunter.io/ios/app/puwei3d/id6761406434)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI service | $2.99 | one-time |
| Value Pack: 100 Credits | $4.99 | one-time |
| Pro Pack: 350 Credits | $14.99 | one-time |
| Mega Pack: 800 Credits | $34.99 | one-time |


## Frequently asked questions

### Is 电牙 free?

电牙 is free to download, with in-app purchases available.

### Is PUWEI3D free?

PUWEI3D is free to download, with in-app purchases available.

### Do 电牙 or PUWEI3D have ads?

Neither 电牙 nor PUWEI3D shows ads.

### Which is updated more often, 电牙 or PUWEI3D?

电牙 ships an update weekly, and PUWEI3D fortnightly. Most recently, 电牙 was updated on July 7, 2026 and PUWEI3D on September 10, 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.*