Comparison

Motion Log Plus vs ETPhone

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Motion Log Plus

This tool captures and visualizes motion data from your iOS device, including orientation, attitude, and acceleration. You can preview recordings in 3D and export log files for further analysis.

Highlights
  • Capture device orientation, attitude, and acceleration
  • Preview motion data in 3D
  • Rename and delete log files
  • Export motion log files
  • Turn off screen while recording
Features
Read full description

Motion Log is a device sensor logging tool that empowers you to capture the motion of your iOS Devices. It records various data points, including device attitude, orientation, and applied force. After recording, you can conveniently preview the motion data. Embark on a journey of motion exploration with Motion Log, a cutting-edge device sensor logging tool designed for iOS devices. Whether you're tracking the subtle nuances of device orientation, analyzing acceleration patterns, or documenting the dynamic forces at play, Motion Log offers unparalleled insight into the motion dynamics of your device. With its intuitive interface and robust feature set, Motion Log empowers users to record, visualize, and analyze motion data with ease. From everyday activities to adventurous endeavors, Motion Log provides a comprehensive toolkit for understanding and harnessing the power of motion. Experience motion logging like never before and unlock a world of possibilities with Motion Log. Features: • Capture motion data of your iOS Devices, including: - Device orientation to North. - Device Attitude: Pitch, Roll, and Yaw. - Device Acceleration in X, Y, and Z directions. - Time and Date of recording start. • Option to turn off the screen while recording. • Rename or delete motion log files. • Preview recorded motion data in 3D. • View 3D device preview at normal speed, 2X speed, or 0.5X speed. • Toggle data preview On or Off. 3D Preview: • Display device orientation in 3D space. • Represent device acceleration with 3D arrows (X - Red, Y - Green, Z - Blue). • Arrow size adjusts based on acceleration magnitude. Motion Log Files: • Access motion log files in the [Files] app under [Motion Log] Folder. • Open motion log files using a normal text editor. • Data array includes compass (0-360 degrees), attitude (Pitch, Roll, and Yaw in radians), and device acceleration (X, Y, Z in G - Gravity). • Recorded with a 0.05 sec interval. • Share motion log files via Airdrop, Messages, or Mail. • Easily load shared motion log files by placing them into [Motion Log] Folder via [Files] app. Usage: • Record walking or running motions. • Capture desk vibrations or other movements. • Analyze G force while riding roller coasters. • Assess road conditions or G force while driving. • Monitor attitude or G force while biking or cycling. • Explore endless possibilities based on your imagination. Thank you for your support, and feel free to visit nitrio.com for more iOS device apps.

About

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.

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
Read full description

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.

Screenshots

Motion Log Plus4 screens
ETPhone4 screens

Verdict

The call

The clearest difference is price: ETPhone at Free against Motion Log Plus's $2.99. ETPhone also leads on rating (3.0 vs 1.0) and ratings volume (6 vs 1). Motion Log Plus's advantage is iOS requirement (13.1 vs 16). On update cadence, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

ETPhone is free to download; Motion Log Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

ETPhone holds the better App Store score, 3.0 against 1.0. That said, the two scores are not equally well evidenced: ETPhone has 6 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Motion Log Plus ships an update every 22 months, ETPhone every 16 months. The most recent releases landed on October 5, 2026 and September 24, 2026 respectively.

Scorecard5 real differences · 5 level
Motion Log Plus versus ETPhone: the parameters behind the verdict, then further details
ParameterMotion Log PlusETPhone
Price$2.99Free — better
Rating1.0 (1 ratings)3.0 (6 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings16 — better
Update frequencyEvery 22 monthsEvery 16 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.1 — better16
Further details — not scored
Size2 MB1 MB
Age rating4+4+
DeveloperHeng Jia LiangArgus Science, LLC

Customer experience

Motion Log Plus

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

ETPhone

All ratings6 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Motion Log Plus

No in-app purchases

None

ETPhone

No in-app purchases

Questions

Is Motion Log Plus free?
Motion Log Plus costs $2.99, with no in-app purchases.
Is ETPhone free?
ETPhone is free to download, with no in-app purchases.
Which has better reviews, Motion Log Plus or ETPhone?
ETPhone is rated higher. Motion Log Plus averages 1.0 out of 5 from 1 ratings, while ETPhone averages 3.0 from 6 ratings.
Do Motion Log Plus or ETPhone have ads?
Neither Motion Log Plus nor ETPhone shows ads.
Which is updated more often, Motion Log Plus or ETPhone?
Motion Log Plus ships an update every 22 months, and ETPhone every 16 months. Most recently, Motion Log Plus was updated on October 5, 2026 and ETPhone on September 24, 2026.

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