# Skyle vs ETPhone

The clearest difference is update cadence: Skyle at every 3 weeks against ETPhone's every 16 months. Skyle also leads on iOS requirement (13.0 vs 16). ETPhone's advantage is device support (3 vs 1). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

Skyle ships an update every 3 weeks, ETPhone every 16 months. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Skyle | ETPhone |
| --- | --- | --- |
| 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 | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 16 months |
| Monetization | Free | Free |
| Size | 74 MB | 1 MB |
| Requires iOS | **13.0** | 16 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [eyeV GmbH](https://appshunter.io/developer/1483770516) | [Argus Science, LLC](https://appshunter.io/developer/1529643728) |

## What reviewers say

### Skyle

[App page](https://appshunter.io/ios/app/skyle/id1483770517)

This utility app provides video streaming and guided indicators for precise eyetracker positioning. It offers multiple calibration points with quality feedback and allows users to record samples to enhance eye-tracking accuracy. Users can also configure switch gestures and actions for customized control.

**Highlights:** Video stream with guided indicators, 5 and 9 point calibration, Calibration quality indicators, Manual feedback form, Eyetracker firmware updates, Sample recording for eye-tracking improvement, Switch configuration with gestures

**In-app purchases:** none


### 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 Skyle free?

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

### Is ETPhone free?

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

### Do Skyle or ETPhone have ads?

Neither Skyle nor ETPhone shows ads.

### Which is updated more often, Skyle or ETPhone?

Skyle ships an update every 3 weeks, and ETPhone every 16 months. Most recently, Skyle was updated on October 13, 2026 and ETPhone on October 10, 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.*