# 擇改易 HK vs 顺知国学

The clearest difference is ads: 顺知国学 at none against 擇改易 HK's shown. 顺知国学 also leads on iOS requirement (13 vs 18.6). 擇改易 HK's advantage is update cadence (every 2 days vs every 3 weeks). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

擇改易 HK ships an update every 2 days, 顺知国学 every 3 weeks. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 擇改易 HK | 顺知国学 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hk/id568034553/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Ad-supported | — |
| Size | 128 MB | 74 MB |
| Requires iOS | 18.6 | **13** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lap Tak Cheung](https://appshunter.io/developer/557168864) | [诗琪 毛](https://appshunter.io/developer/1790876738) |

## What reviewers say

### 擇改易 HK

[App page](https://appshunter.io/ios/app/hk/id568034553)

This app helps you choose auspicious dates for life events and suggests names based on traditional Chinese philosophy and Hong Kong naming conventions. It includes a perpetual calendar for checking lunar dates, solar terms, and daily fortunes.

**Highlights:** Name suggestions based on birth data and five elements, Detailed life analysis with clear explanations, Auspicious date selection for events, Perpetual calendar with lunar dates and daily fortunes, Traditional calendar widget

**Features:** Vision Pro support

**In-app purchases:** none


### 顺知国学

[App page](https://appshunter.io/ios/app/id6740767198)

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

**In-app purchases:** none


## Frequently asked questions

### Is 擇改易 HK free?

擇改易 HK is free to download, with no in-app purchases.

### Is 顺知国学 free?

顺知国学 is free to download, with no in-app purchases.

### Do 擇改易 HK or 顺知国学 have ads?

擇改易 HK shows ads; 顺知国学 does not.

### Which is updated more often, 擇改易 HK or 顺知国学?

擇改易 HK ships an update every 2 days, and 顺知国学 every 3 weeks. Most recently, 擇改易 HK was updated on October 26, 2026 and 顺知国学 on October 28, 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.*