Comparison

Motion Log Plus vs Trajectory

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

Trajectory

Features
Read full description

Detects the trajectories of shapes moving along a parabolic path

Screenshots

Motion Log Plus4 screens
Trajectory1 screens

Verdict

The call

The clearest difference is price: Trajectory at Free against Motion Log Plus's $2.99. Trajectory also leads on update cadence (fortnightly vs every 22 months). Motion Log Plus's advantage is ads (none vs shown) and device support (3 vs 1). On in-app purchases 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

Trajectory 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.

UpkeepUpdate frequency

Motion Log Plus ships an update every 22 months, Trajectory fortnightly. The most recent releases landed on October 22, 2026 and October 11, 2026 respectively.

Scorecard5 real differences · 4 level
Motion Log Plus versus Trajectory: the parameters behind the verdict, then further details
ParameterMotion Log PlusTrajectory
Price$2.99Free — better
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 22 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.1 — better17.7.2
Further details — not scored
Size2 MB36 MB
Age rating4+4+
DeveloperHeng Jia LiangHideaki Uchikoshi

In-app purchases

None

Motion Log Plus

No in-app purchases

None

Trajectory

No in-app purchases

Questions

Is Motion Log Plus free?
Motion Log Plus costs $2.99, with no in-app purchases.
Is Trajectory free?
Trajectory is free to download, with no in-app purchases.
Do Motion Log Plus or Trajectory have ads?
Trajectory shows ads; Motion Log Plus does not.
Which is updated more often, Motion Log Plus or Trajectory?
Motion Log Plus ships an update every 22 months, and Trajectory fortnightly. Most recently, Motion Log Plus was updated on October 22, 2026 and Trajectory on October 11, 2026.

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