# 自然發音速成寶典 Lite vs 關鍵英單：基礎字彙2200

The clearest difference is price: 自然發音速成寶典 Lite at Free against 關鍵英單：基礎字彙2200's $7.99. 自然發音速成寶典 Lite also leads on update cadence (every 6 months vs every 31 months). 關鍵英單：基礎字彙2200's advantage is ads (none vs shown) and review sentiment (100% vs 91%). On in-app purchases, device support and iOS requirement there is nothing between them.

自然發音速成寶典 Lite is free to download; 關鍵英單：基礎字彙2200 costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

自然發音速成寶典 Lite ships an update every 6 months, 關鍵英單：基礎字彙2200 every 31 months. The most recent releases landed on October 12, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 自然發音速成寶典 Lite | 關鍵英單：基礎字彙2200 |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/lite/id564490212/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 90.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 months** | Every 31 months |
| Monetization | **Ad-supported** | Paid |
| Size | 156 MB | 312 MB |
| Requires iOS | 9.0 | 9.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Otek International Inc.](https://appshunter.io/developer/318583126) | [Soyong Corporation](https://appshunter.io/developer/339142397) |

## What reviewers say

### 自然發音速成寶典 Lite

[App page](https://appshunter.io/ios/app/lite/id564490212)

Learn English pronunciation and spelling through phonics rules. This app connects spelling to sounds, helping you memorize vocabulary and improve speaking. Features include letter-to-sound and sound-to-letter exercises, spelling practice, and sentence pronunciation with real voice.

**Highlights:** Letter to sound mapping, Sound to letter mapping, Spelling practice, Sentence pronunciation, Visual learning aids, Phonics rules explained

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

**In-app purchases:** none


### 關鍵英單：基礎字彙2200

[App page](https://appshunter.io/ios/app/2200/id1190032896)

This app uses spaced repetition and a scientific memory system to help users efficiently memorize a large vocabulary. It offers structured learning modules, diverse practice exercises, and progress tracking to build a strong English vocabulary foundation for exams.

**Highlights:** Spaced repetition learning system, Thematic vocabulary categorization, Detailed word breakdowns (phonetics, parts of speech, definitions), Root, prefix, and suffix analysis, Contextual example sentences, Pronunciation practice, Progress tracking and achievement system

**In-app purchases:** none


## Frequently asked questions

### Is 自然發音速成寶典 Lite free?

自然發音速成寶典 Lite is free to download, with no in-app purchases.

### Is 關鍵英單：基礎字彙2200 free?

關鍵英單：基礎字彙2200 costs $7.99, with no in-app purchases.

### Do 自然發音速成寶典 Lite or 關鍵英單：基礎字彙2200 have ads?

自然發音速成寶典 Lite shows ads; 關鍵英單：基礎字彙2200 does not.

### Which is updated more often, 自然發音速成寶典 Lite or 關鍵英單：基礎字彙2200?

自然發音速成寶典 Lite ships an update every 6 months, and 關鍵英單：基礎字彙2200 every 31 months. Most recently, 自然發音速成寶典 Lite was updated on October 12, 2026 and 關鍵英單：基礎字彙2200 on September 15, 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.*