# 英语发音速成宝典 Lite vs KET PET AAA

The clearest difference is price: 英语发音速成宝典 Lite at Free against KET PET AAA's $9.99. 英语发音速成宝典 Lite also leads on update cadence (every 6 months vs every 13 months) and iOS requirement (9.0 vs 13.2). KET PET AAA's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

英语发音速成宝典 Lite is free to download; KET PET AAA costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

英语发音速成宝典 Lite ships an update every 6 months, KET PET AAA every 13 months. The most recent releases landed on August 25, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | 英语发音速成宝典 Lite | KET PET AAA |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/lite/id564569589/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 months** | Every 13 months |
| Monetization | Ad-supported | — |
| Size | 154 MB | 25 MB |
| Requires iOS | **9.0** | 13.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Otek International Inc.](https://appshunter.io/developer/318583126) | [贞平 阮](https://appshunter.io/developer/1369966007) |

## What reviewers say

### 英语发音速成宝典 Lite

[App page](https://appshunter.io/ios/app/lite/id564569589)

Learn English pronunciation through phonics and spelling rules. This app helps adults and children master pronunciation, improve spelling, and build a strong foundation for English learning with real-voice audio and engaging visuals.

**Highlights:** Learn pronunciation via letter combinations, Identify letters from pronunciation, Spelling practice with audio, Sentence pronunciation practice, Visual aids for learning, Phonics and spelling rule explanations

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

**In-app purchases:** none


### KET PET AAA

[App page](https://appshunter.io/ios/app/ket-pet-aaa/id1503472643)

**In-app purchases:** none


## Frequently asked questions

### Is 英语发音速成宝典 Lite free?

英语发音速成宝典 Lite is free to download, with no in-app purchases.

### Is KET PET AAA free?

KET PET AAA costs $9.99, with no in-app purchases.

### Do 英语发音速成宝典 Lite or KET PET AAA have ads?

英语发音速成宝典 Lite shows ads; KET PET AAA does not.

### Which is updated more often, 英语发音速成宝典 Lite or KET PET AAA?

英语发音速成宝典 Lite ships an update every 6 months, and KET PET AAA every 13 months. Most recently, 英语发音速成宝典 Lite was updated on August 25, 2026 and KET PET AAA on September 8, 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.*