# Mobile Science vs PP+ Newton's 2nd Law

The clearest difference is review sentiment: PP+ Newton's 2nd Law at 100% against Mobile Science's 50%. PP+ Newton's 2nd Law also leads on update cadence (every 3 months vs every 79 months). Mobile Science's advantage is rating (3.3 vs 2.5) and device support (3 vs 1). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Mobile Science holds the better App Store score, 3.3 against 2.5. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews complicate that: 50% of Mobile Science's written reviews are positive against 100% of PP+ Newton's 2nd Law's, so the app with the better star average is not the one people write more warmly about.

Mobile Science ships an update every 79 months, PP+ Newton's 2nd Law every 3 months. Both last shipped on October 23, 2026.

## The numbers

| Metric | Mobile Science | PP+ Newton's 2nd Law |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/mobile-science-acceleration/id389821809/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/pp-plus-newtons-2nd-law/id599162351/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 79 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 1 MB | 116 MB |
| Requires iOS | **6.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Indiana University](https://appshunter.io/developer/383456988) | [Polyhedron Learning Media, Inc.](https://appshunter.io/developer/458882328) |

## What reviewers say

### Mobile Science

[App page](https://appshunter.io/ios/app/mobile-science-acceleration/id389821809)

Record, graph, and email accelerometer measurements from your device. Analyze motion along a single axis to measure acceleration, velocity, and distance. Offers real-time graphing and calibration options for accurate data collection.

**Highlights:** Record accelerometer measurements, Graph acceleration, velocity, and distance, Email recorded data, Adjust sample rate, Calibrate axis values, Real-time axis value display

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### PP+ Newton's 2nd Law

[App page](https://appshunter.io/ios/app/pp-plus-newtons-2nd-law/id599162351)

This app simulates a physics lab to explore Newton's Second Law, allowing students to collect and analyze realistic experimental data. It includes introductory videos, background theory, and reporting tools for a comprehensive learning experience.

**Highlights:** 3D physics simulation, Realistic data with errors, Introductory videos, Background theory, Experimental procedure, Analysis and reporting tools, Pre-lab and post-lab quizzes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mobile Science free?

Mobile Science is free to download, with no in-app purchases.

### Is PP+ Newton's 2nd Law free?

PP+ Newton's 2nd Law is free to download, with no in-app purchases.

### Which has better reviews, Mobile Science or PP+ Newton's 2nd Law?

Mobile Science is rated higher. Mobile Science averages 3.3 out of 5 from 3 ratings, while PP+ Newton's 2nd Law averages 2.5 from 2 ratings.

### Do Mobile Science or PP+ Newton's 2nd Law have ads?

Neither Mobile Science nor PP+ Newton's 2nd Law shows ads.

### Which is updated more often, Mobile Science or PP+ Newton's 2nd Law?

Mobile Science ships an update every 79 months, and PP+ Newton's 2nd Law every 3 months. Most recently, Mobile Science was updated on October 23, 2026 and PP+ Newton's 2nd Law on October 23, 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.*