# Liar Checker vs ETPhone

The clearest difference is rating: ETPhone at 3.0 against Liar Checker's 2.1. Liar Checker's advantage is review sentiment (40% vs 0%) and update cadence (every 2 months vs every 16 months). On price, ratings volume, 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.

ETPhone holds the better App Store score, 3.0 against 2.1. Both are backed by a comparable volume of ratings — 7 and 6 respectively. Written reviews complicate that: 40% of Liar Checker's written reviews are positive against 0% of ETPhone's, so the app with the better star average is not the one people write more warmly about.

Liar Checker ships an update every 2 months, ETPhone every 16 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Liar Checker | ETPhone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (7 ratings)](https://appshunter.io/ios/app/liar-checker/id1436674161/reviews) | **[3.0 (6 ratings)](https://appshunter.io/ios/app/etphone/id1529643726/reviews)** |
| Number of ratings | **7** | 6 |
| Positive reviews | **40.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 16 months |
| Monetization | Free | Free |
| Size | 10 MB | 1 MB |
| Requires iOS | **12.2** | 16 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jun Izutsu](https://appshunter.io/developer/1400016131) | [Argus Science, LLC](https://appshunter.io/developer/1529643728) |

## What reviewers say

### Liar Checker

[App page](https://appshunter.io/ios/app/liar-checker/id1436674161)

This utility app tracks eye movements while you speak to analyze potential thought processes. It helps identify if someone is looking in a particular direction for an extended period, suggesting they might be thinking. Useful for understanding non-verbal cues during conversations.

**Highlights:** Tracks eye direction during conversations, Analyzes eye movement patterns, Infers potential thought processes from gaze, Helps understand non-verbal cues

**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 Liar Checker free?

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

### Is ETPhone free?

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

### Which has better reviews, Liar Checker or ETPhone?

ETPhone is rated higher. Liar Checker averages 2.1 out of 5 from 7 ratings, while ETPhone averages 3.0 from 6 ratings.

### Do Liar Checker or ETPhone have ads?

Neither Liar Checker nor ETPhone shows ads.

### Which is updated more often, Liar Checker or ETPhone?

Liar Checker ships an update every 2 months, and ETPhone every 16 months. Most recently, Liar Checker was updated on November 2, 2026 and ETPhone on November 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.*