# i 开大 vs 医维度解剖

The clearest difference is in-app purchases: i 开大 at none against 医维度解剖's 3. 医维度解剖's advantage is update cadence (every 5 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 医维度解剖 sells 3 one-off in-app purchases. i 开大 asks for nothing beyond the download.

i 开大 ships an update every 3 months, 医维度解剖 every 5 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | i 开大 | 医维度解剖 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/id1584086811/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Size | 23 MB | 51 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Kaifeng University](https://appshunter.io/developer/1486289863) | [Henan Zhongbo Technology Co.LTD](https://appshunter.io/developer/1584086813) |

## What reviewers say

### i 开大

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

**Features:** macOS Compatibility

**In-app purchases:** none


### 医维度解剖

[App page](https://appshunter.io/ios/app/id1584086811)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 语音点数月包 | $2.99 | one-time |
| 尊享VIP会员/月卡 | $8.99 | one-time |
| 尊享VIP会员/季卡 | $14.99 | one-time |


## Frequently asked questions

### Is i 开大 free?

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

### Is 医维度解剖 free?

医维度解剖 is free to download, with in-app purchases available.

### Do i 开大 or 医维度解剖 have ads?

Neither i 开大 nor 医维度解剖 shows ads.

### Which is updated more often, i 开大 or 医维度解剖?

i 开大 ships an update every 3 months, and 医维度解剖 every 5 weeks. Most recently, i 开大 was updated on November 7, 2026 and 医维度解剖 on November 3, 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.*