# Reaction Speed Test Pro vs The Public Variable

The clearest difference is price: The Public Variable at Free against Reaction Speed Test Pro's $0.99. Reaction Speed Test Pro's advantage is update cadence (every 2 days vs every 2 weeks). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

The Public Variable is free to download; Reaction Speed Test Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Reaction Speed Test Pro ships an update every 2 days, The Public Variable every 2 weeks. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Reaction Speed Test Pro | The Public Variable |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/the-public-variable/id6741500963/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | — | Free |
| Size | 6 MB | 1.4 GB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Anatoliy Voropay](https://appshunter.io/developer/459700393) | [John Sullivan](https://appshunter.io/developer/1630479388) |

## What reviewers say

### Reaction Speed Test Pro

[App page](https://appshunter.io/ios/app/reaction-speed-test-pro/id1603215049)

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

**In-app purchases:** none


### The Public Variable

[App page](https://appshunter.io/ios/app/the-public-variable/id6741500963)

Experience a unique augmented reality theatre piece exploring perspective and communication. This evolving digital space will eventually host the full production, offering an immersive artistic experience accessible from anywhere.

**Highlights:** Augmented reality theatre, Perspective exploration, Immersive digital space, Evolving content, Accessible anywhere

**In-app purchases:** none


## Frequently asked questions

### Is Reaction Speed Test Pro free?

Reaction Speed Test Pro costs $0.99, with no in-app purchases.

### Is The Public Variable free?

The Public Variable is free to download, with no in-app purchases.

### Do Reaction Speed Test Pro or The Public Variable have ads?

Neither Reaction Speed Test Pro nor The Public Variable shows ads.

### Which is updated more often, Reaction Speed Test Pro or The Public Variable?

Reaction Speed Test Pro ships an update every 2 days, and The Public Variable every 2 weeks. Most recently, Reaction Speed Test Pro was updated on October 11, 2026 and The Public Variable on October 12, 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.*