# 星理紫微斗数 vs 问天AI研究助手

The clearest difference is in-app purchases: 问天AI研究助手 at none against 星理紫微斗数's 3. 星理紫微斗数's advantage is device support. On price and iOS requirement there is nothing between them.

Both are free to download. 星理紫微斗数 sells 3 one-off in-app purchases. 问天AI研究助手 asks for nothing beyond the download.

## The numbers

| Metric | 星理紫微斗数 | 问天AI研究助手 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/id6472164578/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 3 weeks | — |
| Size | 56 MB | 41 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 17+ | 12+ |
| Developer | [Chengdu Niukd Co., Ltd](https://appshunter.io/developer/1651187937) | [Hang'aishan (Hangzhou) Artificial Intelligence Technology Co., Ltd.](https://appshunter.io/developer/1823824055) |

## What reviewers say

### 星理紫微斗数

[App page](https://appshunter.io/ios/app/id6472164578)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 高级会员月卡 | $1.99 | one-time |
| 高级会员半年卡 | $9.99 | one-time |
| 高级会员年卡 | $14.99 | one-time |


### 问天AI研究助手

[App page](https://appshunter.io/ios/app/ai/id6748516090)

**In-app purchases:** none


## Frequently asked questions

### Is 星理紫微斗数 free?

星理紫微斗数 is free to download, with in-app purchases available.

### Is 问天AI研究助手 free?

问天AI研究助手 is free to download, with no in-app purchases.

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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.*