Comparison

Physics Toolbox Accelerometer vs Unrulr

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

Head to head
About

Physics Toolbox Accelerometer

This app uses your device's accelerometer to measure and graph G-Force and acceleration over time. It allows you to record and export data as a CSV file, making it useful for analyzing motion in vehicles, vibrations, and educational physics experiments.

Highlights
  • Measures G-Force and acceleration
  • Graphs G-Force vs. Time
  • Graphs Acceleration vs. Time
  • Records and exports data as CSV
  • Analyzes motion in vehicles and vibrations
  • Useful for classroom physics experiments
Features
Read full description

Turn your iPhone into a motion laboratory. Physics Toolbox Accelerometer reads the accelerometer built into your device and shows exactly what it measures — live, in three dimensions, in units you can check. MEASURE • G-Force — the ratio of normal force to gravity, in X, Y, Z and total magnitude • Linear Acceleration — the same motion with gravity removed, in m/s² • Spectrum — a live FFT that finds the dominant frequency in a vibration RECORD AND ANALYSE • Record any run to CSV, then replay it with duration, maximum and average • Import CSV files recorded elsewhere and analyse them the same way • Share a recording straight from the app BUILT FOR TEACHING Each mode explains the physics behind it: how a piezoresistive cantilever bends under acceleration, how a capacitive accelerometer varies the electric potential across its plates, and why an object in free fall reads zero g. PRO A single lifetime purchase unlocks the signal filters — moving average, Kalman and low-pass — and analysis of saved and imported recordings. Works on iPhone and iPad, in light and dark, with VoiceOver throughout.

About

Unrulr

This app allows users to capture evidence of learning through images, videos, and documents. Users can construct posts around learning goals and share them in a private community for reflection, discussion, and assessment. It helps build a portfolio of skills backed by authentic evidence.

Highlights
  • Capture learning evidence (images, video, documents)
  • Construct posts around learning goals
  • Cross-platform mobile access
  • Private learning community
  • Share, reflect, and assess posts
  • Build a learning and ability portfolio
Features
Read full description

Unrulr sets up learners to: Capture learning whenever and wherever it happens. * Capture images, videos, and documents displaying evidence of learning and ability. * Construct posts around specific learning goals. * Wield the power of a cross-platform mobile app, both inside and outside of the classroom. Engage with purpose in a safe and positive community. * Share, reflect, discuss and assess posts in a private learning environment. * Refine skills and abilities with community input. * Support other learners with feedback and encouragement. Grow Skills relevant for the 21st century. * Channel moments of learning towards long term growth and development. * Build and share an individual portfolio of learning and ability, backed by authentic evidence.

Screenshots

Physics Toolbox Accelerometer4 screens
Unrulr4 screens

Verdict

The call

The clearest difference is rating: Unrulr at 3.1 against Physics Toolbox Accelerometer's 2.0. Unrulr also leads on in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 8 months). On price, ads, monetization model 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

Both are free to download. Physics Toolbox Accelerometer sells 1 one-off in-app purchase. Unrulr asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Unrulr holds the better App Store score, 3.1 against 2.0. That said, the two scores are not equally well evidenced: Unrulr has 61 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 38% of Physics Toolbox Accelerometer's written reviews are positive against 48% of Unrulr's.

UpkeepUpdate frequency

Physics Toolbox Accelerometer ships an update every 8 months, Unrulr every 3 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard6 real differences · 4 level
Physics Toolbox Accelerometer versus Unrulr: the parameters behind the verdict, then further details
ParameterPhysics Toolbox AccelerometerUnrulr
PriceFreeFree
Rating2.0 (5 ratings)3.1 (61 ratings) — better
Positive reviews38.5% of reviews47.6% of reviews — better
Number of ratings561 — better
Update frequencyEvery 8 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.014.0 — better
Further details — not scored
Size15 MB98 MB
Age rating4+4+
DeveloperChrystian VieyraUnrulr Inc.

Customer experience

Physics Toolbox Accelerometer

All ratings5 ratings
Positive20.0%
Neutral0.0%
Negative80.0%
Written reviews13 reviews
Positive38.5%
Neutral7.7%
Negative53.8%

Unrulr

All ratings61 ratings
Positive52.5%
Neutral4.9%
Negative42.6%
Written reviews21 reviews
Positive47.6%
Neutral4.8%
Negative47.6%

In-app purchases

1 purchases

Physics Toolbox Accelerometer

One-time1
  • Accelerometer Pro$2.99
None

Unrulr

No in-app purchases

Questions

Is Physics Toolbox Accelerometer free?
Physics Toolbox Accelerometer is free to download, with in-app purchases available.
Is Unrulr free?
Unrulr is free to download, with no in-app purchases.
Which has better reviews, Physics Toolbox Accelerometer or Unrulr?
Unrulr is rated higher. Physics Toolbox Accelerometer averages 2.0 out of 5 from 5 ratings, while Unrulr averages 3.1 from 61 ratings.
Do Physics Toolbox Accelerometer or Unrulr have ads?
Neither Physics Toolbox Accelerometer nor Unrulr shows ads.
Which is updated more often, Physics Toolbox Accelerometer or Unrulr?
Physics Toolbox Accelerometer ships an update every 8 months, and Unrulr every 3 weeks. Most recently, Physics Toolbox Accelerometer was updated on November 1, 2026 and Unrulr on November 2, 2026.

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