# 51车联 vs Smart Key Start

The clearest difference is iOS requirement: Smart Key Start at 11.0 against 51车联'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.

51车联 ships an update every 4 weeks, Smart Key Start monthly. The most recent releases landed on September 2, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 51车联 | Smart Key Start |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Monthly |
| Monetization | — | Free |
| Size | 74 MB | 68 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [深圳市卓联启航科技有限公司](https://appshunter.io/developer/1266211236) | [兆亮 吉](https://appshunter.io/developer/1636432319) |

## What reviewers say

### 51车联

[App page](https://appshunter.io/ios/app/51/id1266212518)

**Features:** Vision Pro support

**In-app purchases:** none


### Smart Key Start

[App page](https://appshunter.io/ios/app/smart-key-start/id1467326293)

Control and manage your vehicle remotely using your smartphone. Access real-time vehicle information and intelligent dynamic services for enhanced car management.

**Highlights:** Remote vehicle start, Intelligent vehicle management, Real-time vehicle information, Smart dynamic services, Vehicle intelligent control

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 51车联 free?

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

### Is Smart Key Start free?

Smart Key Start is free to download, with no in-app purchases.

### Do 51车联 or Smart Key Start have ads?

Neither 51车联 nor Smart Key Start shows ads.

### Which is updated more often, 51车联 or Smart Key Start?

51车联 ships an update every 4 weeks, and Smart Key Start monthly. Most recently, 51车联 was updated on September 2, 2026 and Smart Key Start on September 17, 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.*