# Head Tracker vs ETPhone

The clearest difference is review sentiment: Head Tracker at 70% against ETPhone's 0%. Head Tracker also leads on rating (4.1 vs 3.0) and update cadence (fortnightly vs every 16 months). ETPhone's advantage is in-app purchases (none vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Head Tracker sells 1 one-off in-app purchase. ETPhone asks for nothing beyond the download.

Head Tracker holds the better App Store score, 4.1 against 3.0. That said, the two scores are not equally well evidenced: Head Tracker has 62 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 70% of Head Tracker's written reviews are positive against 0% of ETPhone's.

Head Tracker ships an update fortnightly, ETPhone every 16 months. The most recent releases landed on August 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Head Tracker | ETPhone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (62 ratings)](https://appshunter.io/ios/app/head-tracker/id1527710071/reviews)** | [3.0 (6 ratings)](https://appshunter.io/ios/app/etphone/id1529643726/reviews) |
| Number of ratings | **62** | 6 |
| Positive reviews | **70.5% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 16 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 2 MB | 1 MB |
| Requires iOS | **15.6** | 16 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [John Yu](https://appshunter.io/developer/1527414279) | [Argus Science, LLC](https://appshunter.io/developer/1529643728) |

## What reviewers say

### Head Tracker

[App page](https://appshunter.io/ios/app/head-tracker/id1527710071)

This app provides responsive 6DOF head tracking for PC games using your iPhone's camera. Enjoy immersive flight and driving simulations without expensive hardware or uncomfortable headsets.

**Highlights:** 6DOF head tracking, Wireless Wi-Fi connection, No external hardware needed, Accurate and responsive tracking, Easy setup, Compatible with opentrack

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $1.99 | one-time |

**What reviewers like**

- 👍 Great value for price
- 🚀 Smooth and responsive tracking
- 🎮 Enhances gaming immersion
- ✅ Easy setup and use
- 💡 Good alternative to expensive hardware

**What reviewers complain about**

- 🐛 Shaky tracking
- ❌ Doesn't work with older iPhones
- ⚠️ Inconsistent performance in low light
- 🔄 Purchase not restoring
- 🪲 Connection drops

**Reported bugs**

- Pitch flips upside down when yawing
- Purchase not restoring after reinstall
- Camera always in portrait mode
- Image gets dark after a few seconds
- Tracking is shaky and buggy

**Requested features**

- Option to turn off screen when tracking
- Always visible rotation button for landscape camera
- Ability to brighten screen for better tracking
- Use IR camera for low-light conditions
- Option to make screen black to reduce battery/screen burn


### ETPhone

[App page](https://appshunter.io/ios/app/etphone/id1529643726)

This application enables real-time gaze computation and recording for eye tracking data collection using a compatible wearable device. It offers control over camera settings, participant calibration, and data recording to an SD card. Collected data can be easily transferred for detailed analysis on a PC.

**Highlights:** Real-time gaze computation, Gaze data recording, Camera gain and quality control, Participant calibration, SD card recording control, Data download for PC analysis

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

**In-app purchases:** none


## Frequently asked questions

### Is Head Tracker free?

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

### Is ETPhone free?

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

### Which has better reviews, Head Tracker or ETPhone?

Head Tracker is rated higher. Head Tracker averages 4.1 out of 5 from 62 ratings, while ETPhone averages 3.0 from 6 ratings.

### Do Head Tracker or ETPhone have ads?

Neither Head Tracker nor ETPhone shows ads.

### Which is updated more often, Head Tracker or ETPhone?

Head Tracker ships an update fortnightly, and ETPhone every 16 months. Most recently, Head Tracker was updated on August 18, 2026 and ETPhone on September 8, 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.*