# QMWHEEL vs Key

The clearest difference is rating: Key at 4.0 against QMWHEEL's 2.7. QMWHEEL's advantage is review sentiment (11% vs 0%) and ratings volume (15 vs 5). 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.

Key holds the better App Store score, 4.0 against 2.7. Both are backed by a comparable volume of ratings — 15 and 5 respectively. Written reviews complicate that: 11% of QMWHEEL's written reviews are positive against 0% of Key's, so the app with the better star average is not the one people write more warmly about.

QMWHEEL ships an update every 4 months, Key every 6 months. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | QMWHEEL | Key |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (15 ratings)](https://appshunter.io/ios/app/qmwheel/id1403228814/reviews) | **[4.0 (5 ratings)](https://appshunter.io/ios/app/key-disp/id1612823021/reviews)** |
| Number of ratings | **15** | 5 |
| Positive reviews | **11.1% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 64 MB | 266 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen LingDong Intelligent Technologies CO., LTD.](https://appshunter.io/developer/1251873828) | [Tianjin Key-Disp Technology Co.,Ltd](https://appshunter.io/developer/1612823023) |

## What reviewers say

### QMWHEEL

[App page](https://appshunter.io/ios/app/qmwheel/id1403228814)

This application connects to a balanced car via Bluetooth to display real-time vehicle data. Monitor power, speed, and current mileage directly from your device.

**Highlights:** Bluetooth connectivity, Real-time power display, Speed monitoring, Mileage tracking, Vehicle state display

**Features:** macOS Compatibility

**In-app purchases:** none


### Key

[App page](https://appshunter.io/ios/app/key-disp/id1612823021)

This utility app allows users to remotely control and connect to devices, facilitating data transmission and collection. It enables over-the-air upgrades and social sharing, while also displaying meter speeds and reading device information directly from a mobile phone.

**Highlights:** Remote control and connection, Data transmission and collection, Over-the-air (OTA) upgrades, Social sharing capabilities, Meter speed display, Device information reading

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QMWHEEL free?

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

### Is Key free?

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

### Which has better reviews, QMWHEEL or Key?

Key is rated higher. QMWHEEL averages 2.7 out of 5 from 15 ratings, while Key averages 4.0 from 5 ratings.

### Do QMWHEEL or Key have ads?

Neither QMWHEEL nor Key shows ads.

### Which is updated more often, QMWHEEL or Key?

QMWHEEL ships an update every 4 months, and Key every 6 months. Most recently, QMWHEEL was updated on October 4, 2026 and Key on October 9, 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.*