# Alfredo Backer vs 多次元雅思

The clearest difference is in-app purchases: Alfredo Backer at none against 多次元雅思's 3. 多次元雅思's advantage is update cadence (every 5 days vs every 8 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 多次元雅思 sells 3 one-off in-app purchases. Alfredo Backer asks for nothing beyond the download.

Alfredo Backer ships an update every 8 months, 多次元雅思 every 5 days. Both last shipped on September 18, 2026.

## The numbers

| Metric | Alfredo Backer | 多次元雅思 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (21 ratings)](https://appshunter.io/ios/app/id6446015800/reviews)** |
| Number of ratings | — | **21** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 443 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Externato Alfredo Backer Ltda](https://appshunter.io/developer/1535072495) | [湖南多次元网络科技有限公司](https://appshunter.io/developer/1659989429) |

## What reviewers say

### Alfredo Backer

[App page](https://appshunter.io/ios/app/alfredo-backer/id1212354980)

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

**In-app purchases:** none


### 多次元雅思

[App page](https://appshunter.io/ios/app/id6446015800)

This comprehensive tool offers a complete set of IELTS practice tests and preparation strategies. It features AI-powered listening and speaking practice, online assessments, and extensive study materials to help users improve their scores.

**Highlights:** IELTS practice tests (Reading, Listening, Speaking, Writing), AI-powered listening and speaking practice, Online assessment for skill evaluation, High-score model answers and strategies, Extensive study materials and exam tips, Cloud sync and offline practice

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $9.99 | one-time |
| 季会员 | $24.99 | one-time |
| 年会员 | $89.99 | one-time |


## Frequently asked questions

### Is Alfredo Backer free?

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

### Is 多次元雅思 free?

多次元雅思 is free to download, with in-app purchases available.

### Do Alfredo Backer or 多次元雅思 have ads?

Neither Alfredo Backer nor 多次元雅思 shows ads.

### Which is updated more often, Alfredo Backer or 多次元雅思?

Alfredo Backer ships an update every 8 months, and 多次元雅思 every 5 days. Most recently, Alfredo Backer was updated on September 18, 2026 and 多次元雅思 on September 18, 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.*