# Primary Particle vs Don't Touch the Red

The clearest difference is ads: Primary Particle at none against Don't Touch the Red's shown. Primary Particle also leads on iOS requirement (12.0 vs 14.0). Don't Touch the Red's advantage is update cadence (daily vs every 8 months). On price, in-app purchases and device support there is nothing between them.

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

Primary Particle ships an update every 8 months, Don't Touch the Red daily. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Primary Particle | Don't Touch the Red |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/primary-particle/id886683283/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Daily** |
| Monetization | Paid | — |
| Size | 47 MB | 18 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Schmitt](https://appshunter.io/developer/585665935) | [Birkan Aksoy](https://appshunter.io/developer/1626910993) |

## What reviewers say

### Primary Particle

[App page](https://appshunter.io/ios/app/primary-particle/id886683283)

A fun puzzle game where players help a scientist stabilize particles in an experiment. Catch particles of the correct color to keep the experiment going and increase your score. Beware of tricky particles that appear as your skill level rises.

**Highlights:** Particle stabilization gameplay, Color-matching mechanic, Increasing difficulty, Score-based progression, Experiment simulation

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

**In-app purchases:** none


### Don't Touch the Red

[App page](https://appshunter.io/ios/app/dont-touch-the-red/id6769427802)

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

**In-app purchases:** none


## Frequently asked questions

### Is Primary Particle free?

Primary Particle is free to download, with no in-app purchases.

### Is Don't Touch the Red free?

Don't Touch the Red is free to download, with no in-app purchases.

### Do Primary Particle or Don't Touch the Red have ads?

Don't Touch the Red shows ads; Primary Particle does not.

### Which is updated more often, Primary Particle or Don't Touch the Red?

Primary Particle ships an update every 8 months, and Don't Touch the Red daily. Most recently, Primary Particle was updated on October 24, 2026 and Don't Touch the Red on October 25, 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.*