# 灵犀 vs MZD数字钥匙

The clearest difference is iOS requirement: MZD数字钥匙 at 12.0 against 灵犀's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

灵犀 ships an update every 6 weeks, MZD数字钥匙 every 3 months. The most recent releases landed on October 27, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 灵犀 | MZD数字钥匙 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Size | 153 MB | 36 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Micro Key Intelligent Technology Co., LTD](https://appshunter.io/developer/1680128479) | [USTL Internet of Things Co., Ltd.](https://appshunter.io/developer/1494250730) |

## What reviewers say

### 灵犀

[App page](https://appshunter.io/ios/app/id1640250174)

**Features:** macOS Compatibility

**In-app purchases:** none


### MZD数字钥匙

[App page](https://appshunter.io/ios/app/mzd/id1669684270)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 灵犀 free?

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

### Is MZD数字钥匙 free?

MZD数字钥匙 is free to download, with no in-app purchases.

### Do 灵犀 or MZD数字钥匙 have ads?

Neither 灵犀 nor MZD数字钥匙 shows ads.

### Which is updated more often, 灵犀 or MZD数字钥匙?

灵犀 ships an update every 6 weeks, and MZD数字钥匙 every 3 months. Most recently, 灵犀 was updated on October 27, 2026 and MZD数字钥匙 on October 16, 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.*