# 甲醛儀 vs 转文字大师

The clearest difference is in-app purchases: 甲醛儀 at none against 转文字大师's 5. 甲醛儀 also leads on iOS requirement (9.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 转文字大师 sells 5 one-off in-app purchases. 甲醛儀 asks for nothing beyond the download.

甲醛儀 ships an update every 2 months, 转文字大师 monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | 甲醛儀 | 转文字大师 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/id1335277810/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 91.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 21 MB | 42 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fitz Inc.](https://appshunter.io/developer/1335277809) | [ShenZhen MaiMa Network Technology Co., Ltd.](https://appshunter.io/developer/1652278398) |

## What reviewers say

### 甲醛儀

[App page](https://appshunter.io/ios/app/id1335277810)

**Features:** macOS Compatibility

**In-app purchases:** none


### 转文字大师

[App page](https://appshunter.io/ios/app/id6444693686)

This app converts audio and video content into text, extracts text from images and links, and offers a teleprompter feature. It's designed to boost efficiency for students, professionals, and content creators by simplifying text extraction and editing.

**Highlights:** Video to text conversion, Link to text extraction, Audio to text conversion, Image to text conversion, Teleprompter function, Content material extraction, Prohibited word detection

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 日卡会员 | $0.99 | one-time |
| 周卡 | $1.99 | one-time |
| 月卡 | $3.99 | one-time |
| 季卡 | $9.99 | one-time |
| 年卡 | $22.99 | one-time |


## Frequently asked questions

### Is 甲醛儀 free?

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

### Is 转文字大师 free?

转文字大师 is free to download, with in-app purchases available.

### Do 甲醛儀 or 转文字大师 have ads?

Neither 甲醛儀 nor 转文字大师 shows ads.

### Which is updated more often, 甲醛儀 or 转文字大师?

甲醛儀 ships an update every 2 months, and 转文字大师 monthly. Most recently, 甲醛儀 was updated on October 24, 2026 and 转文字大师 on October 24, 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.*