# 问真八字 vs 知历实验室

The clearest difference is in-app purchases: 知历实验室 at none against 问真八字's 3. 问真八字's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. 问真八字 sells 3 one-off in-app purchases. 知历实验室 asks for nothing beyond the download.

## The numbers

| Metric | 问真八字 | 知历实验室 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (51 ratings)](https://appshunter.io/ios/app/id1665624645/reviews)** | — |
| Number of ratings | **51** | — |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Size | 85 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Wenzhen Cultural Communication Co., Ltd.](https://appshunter.io/developer/1664632538) | [山杰 韩](https://appshunter.io/developer/1884328098) |

## What reviewers say

### 问真八字

[App page](https://appshunter.io/ios/app/id1665624645)

This app offers a unique five-pillar astrological chart calculation, expanding on traditional four-pillar methods. It provides access to a vast library of ancient texts, AI-powered study tools, and a database of historical figures for in-depth research and learning.

**Highlights:** Five-pillar astrological chart calculation, Extensive ancient text library, AI-powered study assistant, Historical figure database, Astrological chart comparison, Research notes functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3个月黄金体验会员 | $14.99 | one-time |
| 1年黄金会员 | $39.99 | one-time |
| 5年钻石会员 | $129.99 | one-time |


### 知历实验室

[App page](https://appshunter.io/ios/app/id6768883256)

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

**In-app purchases:** none


## Frequently asked questions

### Is 问真八字 free?

问真八字 is free to download, with in-app purchases available.

### Is 知历实验室 free?

知历实验室 is free to download, with no in-app purchases.

### Do 问真八字 or 知历实验室 have ads?

Neither 问真八字 nor 知历实验室 shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*