# Earphones Sensor vs SpeedHUD

The clearest difference is in-app purchases: Earphones Sensor at none against SpeedHUD's 2. Earphones Sensor also leads on iOS requirement (15.0 vs 17.6). SpeedHUD's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. SpeedHUD sells 2 in-app purchases, starting at $2.99 per month. Earphones Sensor asks for nothing beyond the download.

## The numbers

| Metric | Earphones Sensor | SpeedHUD |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | — |
| Monetization | Ad-supported | — |
| Size | 5 MB | 3 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [yuya kanbetsunawa](https://appshunter.io/developer/1597026161) | [Boris Spiro](https://appshunter.io/developer/1853293003) |

## What reviewers say

### Earphones Sensor

[App page](https://appshunter.io/ios/app/earphones-sensor/id1597026159)

Transform compatible AirPods into a motion sensor to track head movements. Visualize acceleration, gyroscope, and attitude data in real-time and save it as a CSV file for research and analysis.

**Highlights:** Head motion sensing with AirPods, Real-time motion graph visualization, Data logging for acceleration and gyroscope, Save motion data as CSV, Customizable data type selection

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

**In-app purchases:** none


### SpeedHUD

[App page](https://appshunter.io/ios/app/speedhud-gps-speedometer/id6756783189)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $19.99 | per year |


## Frequently asked questions

### Is Earphones Sensor free?

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

### Is SpeedHUD free?

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

### Do Earphones Sensor or SpeedHUD have ads?

Earphones Sensor shows ads; SpeedHUD does not.

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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.*