# KaiFuTe Smart vs 51DK

The clearest difference is rating: 51DK at 5.0 against KaiFuTe Smart's 2.0. KaiFuTe Smart's advantage is update cadence (every 9 days vs every 3 weeks) and ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

51DK holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

KaiFuTe Smart ships an update every 9 days, 51DK every 3 weeks. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | KaiFuTe Smart | 51DK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/kaifute-smart/id1590522589/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/51dk/id1595016316/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 29 MB | 60 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ShenZhen Lenze Technology Co,.Ltd.](https://appshunter.io/developer/1190864538) | [深圳市卓联启航科技有限公司](https://appshunter.io/developer/1266211236) |

## What reviewers say

### KaiFuTe Smart

[App page](https://appshunter.io/ios/app/kaifute-smart/id1590522589)

This application is designed to work with KaiFuTe smart LCD car keys. It allows users to interact with their smart car key features.

**Highlights:** Smart LCD car key integration, Companion app functionality, Device interaction

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is KaiFuTe Smart free?

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

### Is 51DK free?

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

### Which has better reviews, KaiFuTe Smart or 51DK?

51DK is rated higher. KaiFuTe Smart averages 2.0 out of 5 from 3 ratings, while 51DK averages 5.0 from 1 ratings.

### Do KaiFuTe Smart or 51DK have ads?

Neither KaiFuTe Smart nor 51DK shows ads.

### Which is updated more often, KaiFuTe Smart or 51DK?

KaiFuTe Smart ships an update every 9 days, and 51DK every 3 weeks. Most recently, KaiFuTe Smart was updated on October 14, 2026 and 51DK on October 24, 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.*