# PP+ Archimedes Principle vs Experience Physics

The clearest difference is price: Experience Physics at Free against PP+ Archimedes Principle's $1.99. Experience Physics also leads on update cadence (every 4 months vs every 29 months) and iOS requirement (6.0 vs 18.0). PP+ Archimedes Principle's advantage is in-app purchases (none vs 10). On ads and device support there is nothing between them.

Experience Physics is free to download; PP+ Archimedes Principle costs $1.99 up front. Experience Physics sells 10 one-off in-app purchases. PP+ Archimedes Principle asks for nothing beyond the download.

PP+ Archimedes Principle ships an update every 29 months, Experience Physics every 4 months. The most recent releases landed on February 1, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | PP+ Archimedes Principle | Experience Physics |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/experience-physics/id687074231/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 4 months** |
| Monetization | — | Free |
| Size | 111 MB | 45 MB |
| Requires iOS | 18.0 | **6.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Polyhedron Learning Media, Inc.](https://appshunter.io/developer/458882328) | [Center for Educational Technology](https://appshunter.io/developer/498928218) |

## What reviewers say

### PP+ Archimedes Principle

[App page](https://appshunter.io/ios/app/pp-archimedes-principle/id622367686)

**Features:** macOS Compatibility

**In-app purchases:** none


### Experience Physics

[App page](https://appshunter.io/ios/app/experience-physics/id687074231)

Explore fundamental physics concepts through interactive simulations and guided investigations. This app uses an inquiry-based learning approach with dynamic graphs, tables, and animations to help students understand phenomena like mass, weight, speed, and energy transformations. It includes thought-provoking quizzes for individual or group learning.

**Highlights:** Dynamic physics simulations, Interactive labs, Inquiry-based learning, Dynamic graphs and tables, Thought-provoking quizzes, Scientific background information

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| The Energy of a Moving Spring | $0.99 | one-time |
| Mass and Weight | $0.99 | one-time |
| Speed It Up | $0.99 | one-time |
| The Energy of a Pendulum | $0.99 | one-time |
| Stopping Distance | $0.99 | one-time |
| Color Vision | $0.99 | one-time |
| Joule's Experiment | $0.99 | one-time |
| Additive Color Mixing | $0.99 | one-time |
| Person Pushing Object | $0.99 | one-time |
| Ohm's Law | $0.99 | one-time |


## Frequently asked questions

### Is PP+ Archimedes Principle free?

PP+ Archimedes Principle costs $1.99, with no in-app purchases.

### Is Experience Physics free?

Experience Physics is free to download, with in-app purchases available.

### Do PP+ Archimedes Principle or Experience Physics have ads?

Neither PP+ Archimedes Principle nor Experience Physics shows ads.

### Which is updated more often, PP+ Archimedes Principle or Experience Physics?

PP+ Archimedes Principle ships an update every 29 months, and Experience Physics every 4 months. Most recently, PP+ Archimedes Principle was updated on February 1, 2026 and Experience Physics on September 29, 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.*