# 四级单词达人 vs Reverse Audio

The clearest difference is update cadence: Reverse Audio at every 3 weeks against 四级单词达人's every 3 months. 四级单词达人's advantage is iOS requirement (11.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 四级单词达人 sells 1 one-off in-app purchase and Reverse Audio sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

四级单词达人 ships an update every 3 months, Reverse Audio every 3 weeks. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 四级单词达人 | Reverse Audio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai/id6484273453/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 47 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [摇摇 章](https://appshunter.io/developer/1570032236) | [Ion Postolachi](https://appshunter.io/developer/1553024588) |

## What reviewers say

### 四级单词达人

[App page](https://appshunter.io/ios/app/ai/id6484273453)

This app simplifies vocabulary learning for the CET-4 exam. It uses AI to recommend words and track your memory, creating personalized study plans. A daily word widget keeps you on track.

**Highlights:** AI-powered word recommendations, Latest CET-4 vocabulary list, Daily word widget, Memory tracking, Personalized study plans

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 大学英语四级单词达人vip会员 | $0.99 | one-time |


### Reverse Audio

[App page](https://appshunter.io/ios/app/reverse-audio-voice-changer/id6752722175)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $3.99 | per 7 days |
| Monthly Premium | $5.99 | per month |
| Yearly Premium | $29.99 | per year |
| Lifetime Premium | $44.99 | one-time |


## Frequently asked questions

### Is 四级单词达人 free?

四级单词达人 is free to download, with in-app purchases available.

### Is Reverse Audio free?

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

### Do 四级单词达人 or Reverse Audio have ads?

Neither 四级单词达人 nor Reverse Audio shows ads.

### Which is updated more often, 四级单词达人 or Reverse Audio?

四级单词达人 ships an update every 3 months, and Reverse Audio every 3 weeks. Most recently, 四级单词达人 was updated on October 24, 2026 and Reverse Audio on October 21, 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.*