# Earphones Sensor vs NorthPin Compass

The clearest difference is in-app purchases: Earphones Sensor at none against NorthPin Compass's 1. Earphones Sensor also leads on update cadence (fortnightly vs every 6 weeks) and iOS requirement (15.0 vs 26.0). NorthPin Compass's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. NorthPin Compass sells 1 one-off in-app purchase. Earphones Sensor asks for nothing beyond the download.

Earphones Sensor ships an update fortnightly, NorthPin Compass every 6 weeks. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Earphones Sensor | NorthPin Compass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/northpin-compass/id6759530518/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 5 MB | 28 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [yuya kanbetsunawa](https://appshunter.io/developer/1597026161) | [Huseyin Bicen](https://appshunter.io/developer/1868493271) |

## 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


### NorthPin Compass

[App page](https://appshunter.io/ios/app/northpin-compass/id6759530518)

Easily save and navigate back to important locations like your parked car or campsite. Offers live directional guidance, customizable compass styles, and convenient widget support. Share locations with others, even before they install the app.

**Highlights:** Save and follow locations, Live directional guidance, Customizable compass styles, Home and Lock Screen widgets, Share saved places, Global directions (Qibla, etc.)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NorthPin Pro Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Earphones Sensor free?

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

### Is NorthPin Compass free?

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

### Do Earphones Sensor or NorthPin Compass have ads?

Earphones Sensor shows ads; NorthPin Compass does not.

### Which is updated more often, Earphones Sensor or NorthPin Compass?

Earphones Sensor ships an update fortnightly, and NorthPin Compass every 6 weeks. Most recently, Earphones Sensor was updated on October 21, 2026 and NorthPin Compass on October 25, 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.*