# 问真八字 vs Docmark

The clearest difference is review sentiment: Docmark at 100% against 问真八字's 89%. Docmark also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 问真八字 sells 3 one-off in-app purchases and Docmark sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 问真八字 | Docmark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (57 ratings)](https://appshunter.io/ios/app/id1665624645/reviews)** | — |
| Number of ratings | **57** | — |
| Positive reviews | 88.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 85 MB | 46 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Wenzhen Cultural Communication Co., Ltd.](https://appshunter.io/developer/1664632538) | [CometDust Technology (Guangzhou) Co., Ltd](https://appshunter.io/developer/1763733479) |

## 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 |


### Docmark

[App page](https://appshunter.io/ios/app/docmark/id6711330172)

This app helps you manage and secure your credentials with custom watermarks. It prioritizes privacy with offline processing and optional iCloud synchronization. Organize, categorize, and batch edit your documents for enhanced security.

**Highlights:** Offline credential processing, Customizable watermarks, Batch editing and sorting, Local and iCloud storage, Organize and categorize credentials

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $2.99 | one-time |


## Frequently asked questions

### Is 问真八字 free?

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

### Is Docmark free?

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

### Do 问真八字 or Docmark have ads?

Neither 问真八字 nor Docmark shows ads.

### Which is updated more often, 问真八字 or Docmark?

问真八字 ships an update monthly, and Docmark monthly. Most recently, 问真八字 was updated on November 3, 2026 and Docmark on October 30, 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.*