# Quantitative QiMen 奇門 vs ZYM Mobile

The clearest difference is price: ZYM Mobile at Free against Quantitative QiMen 奇門's $129.99. Quantitative QiMen 奇門's advantage is iOS requirement (13.0 vs 16.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

ZYM Mobile is free to download; Quantitative QiMen 奇門 costs $129.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Quantitative QiMen 奇門 | ZYM Mobile |
| --- | --- | --- |
| Price | $129.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Size | 16 MB | 49 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Djauhery .](https://appshunter.io/developer/1510896841) | [Handphoneshop Pte Ltd](https://appshunter.io/developer/1594341294) |

## What reviewers say

### Quantitative QiMen 奇門

[App page](https://appshunter.io/ios/app/quantitative-qimen/id1510896842)

**In-app purchases:** none


### ZYM Mobile

[App page](https://appshunter.io/ios/app/zym-mobile/id1626054541)

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

**In-app purchases:** none


## Frequently asked questions

### Is Quantitative QiMen 奇門 free?

Quantitative QiMen 奇門 costs $129.99, with no in-app purchases.

### Is ZYM Mobile free?

ZYM Mobile is free to download, with no in-app purchases.

### Do Quantitative QiMen 奇門 or ZYM Mobile have ads?

Neither Quantitative QiMen 奇門 nor ZYM Mobile shows ads.

### Which is updated more often, Quantitative QiMen 奇門 or ZYM Mobile?

Quantitative QiMen 奇門 ships an update every 3 months, and ZYM Mobile every 3 months. Most recently, Quantitative QiMen 奇門 was updated on October 25, 2026 and ZYM Mobile on October 25, 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.*