# Radioactivity vs Equations with Rational Alg Ex

The clearest difference is price: Equations with Rational Alg Ex at Free against Radioactivity's $0.99. Equations with Rational Alg Ex also leads on device support (3 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

Equations with Rational Alg Ex is free to download; Radioactivity costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Radioactivity | Equations with Rational Alg Ex |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | — |
| Size | 52 MB | 56 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [www.ajaxmediatech.com](https://appshunter.io/developer/973768003) | [Science Education Institute](https://appshunter.io/developer/1439710468) |

## What reviewers say

### Radioactivity

[App page](https://appshunter.io/ios/app/radioactivity-physics/id1136130171)

**Features:** macOS Compatibility

**In-app purchases:** none


### Equations with Rational Alg Ex

[App page](https://appshunter.io/ios/app/equations-with-rational-alg-ex/id6742370630)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Radioactivity free?

Radioactivity costs $0.99, with no in-app purchases.

### Is Equations with Rational Alg Ex free?

Equations with Rational Alg Ex is free to download, with no in-app purchases.

### Do Radioactivity or Equations with Rational Alg Ex have ads?

Neither Radioactivity nor Equations with Rational Alg Ex 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.*