# i 开大 vs 嘤语互动

The clearest difference is in-app purchases: i 开大 at none against 嘤语互动's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 嘤语互动 sells 1 one-off in-app purchase. i 开大 asks for nothing beyond the download.

## The numbers

| Metric | i 开大 | 嘤语互动 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 23 MB | 308 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Kaifeng University](https://appshunter.io/developer/1486289863) | [颖玲 杨](https://appshunter.io/developer/1876476461) |

## What reviewers say

### i 开大

[App page](https://appshunter.io/ios/app/i/id1477281717)

**Features:** macOS Compatibility

**In-app purchases:** none


### 嘤语互动

[App page](https://appshunter.io/ios/app/0-1/id6763982538)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 嘤语互动专业版 | $0.99 | one-time |


## Frequently asked questions

### Is i 开大 free?

i 开大 is free to download, with no in-app purchases.

### Is 嘤语互动 free?

嘤语互动 is free to download, with in-app purchases available.

### Do i 开大 or 嘤语互动 have ads?

Neither i 开大 nor 嘤语互动 shows ads.

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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.*