# ETPhone vs Pupil Detection

The clearest difference is ads: ETPhone at none against Pupil Detection's shown. ETPhone also leads on device support (3 vs 1). Pupil Detection's advantage is update cadence (every 2 weeks vs every 16 months). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ETPhone ships an update every 16 months, Pupil Detection every 2 weeks. The most recent releases landed on September 8, 2026 and August 3, 2026 respectively.

## The numbers

| Metric | ETPhone | Pupil Detection |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (6 ratings)](https://appshunter.io/ios/app/etphone/id1529643726/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 16 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 1 MB | 36 MB |
| Requires iOS | **16** | 17.7.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Argus Science, LLC](https://appshunter.io/developer/1529643728) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### 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


### Pupil Detection

[App page](https://appshunter.io/ios/app/pupil-detection/id6739671823)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ETPhone free?

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

### Is Pupil Detection free?

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

### Do ETPhone or Pupil Detection have ads?

Pupil Detection shows ads; ETPhone does not.

### Which is updated more often, ETPhone or Pupil Detection?

ETPhone ships an update every 16 months, and Pupil Detection every 2 weeks. Most recently, ETPhone was updated on September 8, 2026 and Pupil Detection on August 3, 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.*