# Physics Toolbox Accelerometer vs Unrulr

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.

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

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.

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.

## The numbers

| Metric | Physics Toolbox Accelerometer | Unrulr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (5 ratings)](https://appshunter.io/ios/app/physics-toolbox-accelerometer/id1008160133/reviews) | **[3.1 (61 ratings)](https://appshunter.io/ios/app/unrulr/id1449548828/reviews)** |
| Number of ratings | 5 | **61** |
| Positive reviews | 38.5% of reviews | **47.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 15 MB | 98 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chrystian Vieyra](https://appshunter.io/developer/998187453) | [Unrulr Inc.](https://appshunter.io/developer/1449548827) |

## What reviewers say

### Physics Toolbox Accelerometer

[App page](https://appshunter.io/ios/app/physics-toolbox-accelerometer/id1008160133)

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:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Accelerometer Pro | $2.99 | one-time |


### Unrulr

[App page](https://appshunter.io/ios/app/unrulr/id1449548828)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*