# Experience Physics vs Rewriting Expressions

The clearest difference is in-app purchases: Rewriting Expressions at none against Experience Physics's 10. Rewriting Expressions also leads on device support (3 vs 1). Experience Physics's advantage is iOS requirement (6.0 vs 12.0). On price and ads there is nothing between them.

Both are free to download. Experience Physics sells 10 one-off in-app purchases. Rewriting Expressions asks for nothing beyond the download.

## The numbers

| Metric | Experience Physics | Rewriting Expressions |
| --- | --- | --- |
| Price | Free | 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Free | — |
| Size | 45 MB | 20 MB |
| Requires iOS | **6.0** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Center for Educational Technology](https://appshunter.io/developer/498928218) | [Science Education Institute](https://appshunter.io/developer/1439710468) |

## What reviewers say

### 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 |


### Rewriting Expressions

[App page](https://appshunter.io/ios/app/rewriting-expressions/id6740447854)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Experience Physics free?

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

### Is Rewriting Expressions free?

Rewriting Expressions is free to download, with no in-app purchases.

### Do Experience Physics or Rewriting Expressions have ads?

Neither Experience Physics nor Rewriting Expressions shows ads.

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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.*