# 51DK vs MG数字钥匙

The clearest difference is iOS requirement: MG数字钥匙 at 12.0 against 51DK's 15.0. 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.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 10, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | 51DK | MG数字钥匙 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/51dk/id1595016316/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | — |
| Size | 59 MB | 78 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [深圳市卓联启航科技有限公司](https://appshunter.io/developer/1266211236) | [USTL Internet of Things Co., Ltd.](https://appshunter.io/developer/1494250730) |

## What reviewers say

### 51DK

[App page](https://appshunter.io/ios/app/51dk/id1595016316)

This utility app uses Bluetooth to connect to your vehicle, allowing you to unlock, lock, and open the trunk directly from your phone. It eliminates the need to carry physical keys for these functions.

**Highlights:** Bluetooth vehicle connectivity, Remote car unlocking, Remote car locking, Remote trunk opening, Eliminates physical keys

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

**In-app purchases:** none


### MG数字钥匙

[App page](https://appshunter.io/ios/app/mg/id6740787858)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 51DK free?

51DK is free to download, with no in-app purchases.

### Is MG数字钥匙 free?

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

### Do 51DK or MG数字钥匙 have ads?

Neither 51DK nor MG数字钥匙 shows ads.

### Which is updated more often, 51DK or MG数字钥匙?

51DK ships an update every 3 weeks, and MG数字钥匙 every 3 weeks. Most recently, 51DK was updated on October 10, 2026 and MG数字钥匙 on September 18, 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.*