# EI Group vs Lazidi

The clearest difference is in-app purchases: EI Group at none against Lazidi's 2. EI Group also leads on iOS requirement (12.4 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Lazidi sells 2 one-off in-app purchases. EI Group asks for nothing beyond the download.

EI Group ships an update every 10 days, Lazidi every 3 weeks. Both last shipped on October 16, 2026.

## The numbers

| Metric | EI Group | Lazidi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/lazidi/id6808170393/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 26 MB |
| Requires iOS | **12.4** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [EI EDUCATION AND INVESTMENT GROUP JOINT STOCK COMPANY](https://appshunter.io/developer/1817556271) | [Pham Hung](https://appshunter.io/developer/6785816296) |

## What reviewers say

### EI Group

[App page](https://appshunter.io/ios/app/ei-group/id6746621821)

**Features:** macOS Compatibility

**In-app purchases:** none


### Lazidi

[App page](https://appshunter.io/ios/app/lazidi/id6808170393)

This app offers illustrated vocabulary flashcards for Vietnamese speakers learning English and Chinese, along with a Vietnamese vocabulary builder. It provides offline access to extensive word banks, pronunciation guides, and etymology for Chinese characters. Users can track progress and unlock achievements.

**Highlights:** Illustrated vocabulary flashcards, IPA and Pinyin pronunciation with audio, Vietnamese etymology for Chinese characters, Extensive word banks for English, Chinese, and Vietnamese, Offline access, no account or internet needed, Progress tracking and achievements, Home screen and lock screen widgets

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tiếng Anh trọn bộ | $4.99 | one-time |
| Tiếng Trung trọn bộ | $4.99 | one-time |


## Frequently asked questions

### Is EI Group free?

EI Group is free to download, with no in-app purchases.

### Is Lazidi free?

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

### Do EI Group or Lazidi have ads?

Neither EI Group nor Lazidi shows ads.

### Which is updated more often, EI Group or Lazidi?

EI Group ships an update every 10 days, and Lazidi every 3 weeks. Most recently, EI Group was updated on October 16, 2026 and Lazidi on October 16, 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.*