ETPhone vs Calculator with reverse screen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ETPhone
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.
- Real-time gaze computation
- Gaze data recording
- Camera gain and quality control
- Participant calibration
- SD card recording control
- Data download for PC analysis
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Argus Science is pleased to release the latest version of the ETPhone App for use with the Argus Science ETVision wearable eye tracker. This Release builds upon the original ETPhone App by adding real-time gaze computation and recording directly on your iOS Phone or Tablet, allowing increased flexibility and control for eye tracking data collection. With this latest ETPhone Release you may name files, control gain and quality of the ETVision cameras, calibrate participants, record gaze data and control recording to an SD card inserted in the ETVision controller. After data is collected, it is easy to download the gaze data to a PC with Argus Science’s ETAnalysis program which allows the researcher to perform typical gaze analysis functions such as Fixation definition, Pupillometry and blink criteria as well as automated area of interest creation to name a few.
Calculator with reverse screen
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Calculator with a screen that can be displayed upside down to make it easier to read face-to-face
Screenshots
Verdict
The clearest difference is ads: ETPhone at none against Calculator with reverse screen's shown. Calculator with reverse screen's advantage is update cadence (fortnightly vs every 16 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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, Calculator with reverse screen fortnightly. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.
| Parameter | ETPhone | Calculator with reverse screen |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (6 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 16 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 16 | 15.8.3 — better |
| Further details — not scored | ||
| Size | 1 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Argus Science, LLC | Hideaki Uchikoshi |
In-app purchases
ETPhone
No in-app purchases
Calculator with reverse screen
No in-app purchases
Questions
Is ETPhone free?
Is Calculator with reverse screen free?
Do ETPhone or Calculator with reverse screen have ads?
Which is updated more often, ETPhone or Calculator with reverse screen?
Other comparisons
