# MG数字钥匙 vs Hecar BT

The clearest difference is update cadence: MG数字钥匙 at every 3 weeks against Hecar BT's every 4 months. On price, ads, 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.

MG数字钥匙 ships an update every 3 weeks, Hecar BT every 4 months. The most recent releases landed on September 18, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | MG数字钥匙 | Hecar BT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 78 MB | 8 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [USTL Internet of Things Co., Ltd.](https://appshunter.io/developer/1494250730) | [胜 邓](https://appshunter.io/developer/1368398791) |

## What reviewers say

### MG数字钥匙

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Hecar BT

[App page](https://appshunter.io/ios/app/hecar-bt/id6753977704)

**In-app purchases:** none


## Frequently asked questions

### Is MG数字钥匙 free?

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

### Is Hecar BT free?

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

### Do MG数字钥匙 or Hecar BT have ads?

Neither MG数字钥匙 nor Hecar BT shows ads.

### Which is updated more often, MG数字钥匙 or Hecar BT?

MG数字钥匙 ships an update every 3 weeks, and Hecar BT every 4 months. Most recently, MG数字钥匙 was updated on September 18, 2026 and Hecar BT on October 7, 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.*