# YIYUN TECH vs SpeedX

The clearest difference is review sentiment: SpeedX at 89% against YIYUN TECH's 0%. SpeedX also leads on rating (4.0 vs 1.0). YIYUN TECH's advantage is in-app purchases (none vs 2) and iOS requirement (7.0 vs 17.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. SpeedX sells 2 in-app purchases, starting at $0.99 per month. YIYUN TECH asks for nothing beyond the download.

SpeedX holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 6 and 5 respectively. Written reviews point the same way: 0% of YIYUN TECH's written reviews are positive against 89% of SpeedX's.

## The numbers

| Metric | YIYUN TECH | SpeedX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (6 ratings)](https://appshunter.io/ios/app/yiyun-tech/id1231040549/reviews) | **[4.0 (5 ratings)](https://appshunter.io/ios/app/speedx-speedometer-altimeter/id6587571152/reviews)** |
| Number of ratings | **6** | 5 |
| Positive reviews | 0.0% of reviews | **88.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 weeks |
| Monetization | **Free** | Freemium |
| Size | 10 MB | 34 MB |
| Requires iOS | **7.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [玲苑 王](https://appshunter.io/developer/1231040548) | [超 马](https://appshunter.io/developer/1650081295) |

## What reviewers say

### YIYUN TECH

[App page](https://appshunter.io/ios/app/yiyun-tech/id1231040549)

Control your smart balance vehicle with this app. Monitor real-time vehicle status, speed, and steering for agile control.

**Highlights:** Real-time vehicle status monitoring, Speed monitoring, Agile steering control, Vehicle controller functionality

**In-app purchases:** none


### SpeedX

[App page](https://appshunter.io/ios/app/speedx-speedometer-altimeter/id6587571152)

Track your exercise and environmental data with real-time speed, altitude, and pressure readings. Features include a compass, attitude indicator, and trip recording with map display. Ideal for fitness, outdoor adventures, and daily travel.

**Highlights:** Real-time speed tracking with voice alerts, Barometric pressure and altitude data, Integrated compass and attitude indicator, GPS positioning and map display, Trip recording and sharing, Offline functionality

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $5.99 | per year |


## Frequently asked questions

### Is YIYUN TECH free?

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

### Is SpeedX free?

SpeedX is free to download, with in-app purchases available.

### Which has better reviews, YIYUN TECH or SpeedX?

SpeedX is rated higher. YIYUN TECH averages 1.0 out of 5 from 6 ratings, while SpeedX averages 4.0 from 5 ratings.

### Do YIYUN TECH or SpeedX have ads?

Neither YIYUN TECH nor SpeedX shows ads.

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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.*