# 掌上理工 vs 日初

The clearest difference is in-app purchases: 掌上理工 at none against 日初's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 日初 sells 4 one-off in-app purchases. 掌上理工 asks for nothing beyond the download.

掌上理工 ships an update every 2 months, 日初 every 6 weeks. The most recent releases landed on November 7, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | 掌上理工 | 日初 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Size | 107 MB | 203 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [南通理工学院](https://appshunter.io/developer/1656203728) | [南京阿奎那心理健康有限公司](https://appshunter.io/developer/1687247875) |

## What reviewers say

### 掌上理工

[App page](https://appshunter.io/ios/app/id6444696641)

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

**In-app purchases:** none


### 日初

[App page](https://appshunter.io/ios/app/id6747154407)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 测测你的抑郁水平 | $0.99 | one-time |
| 单次卡 | $0.99 | one-time |
| 12 次卡 | $3.99 | one-time |
| 36 次卡 | $9.99 | one-time |


## Frequently asked questions

### Is 掌上理工 free?

掌上理工 is free to download, with no in-app purchases.

### Is 日初 free?

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

### Do 掌上理工 or 日初 have ads?

Neither 掌上理工 nor 日初 shows ads.

### Which is updated more often, 掌上理工 or 日初?

掌上理工 ships an update every 2 months, and 日初 every 6 weeks. Most recently, 掌上理工 was updated on November 7, 2026 and 日初 on November 12, 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.*