# Odd Color Out vs QuantumCurling

The clearest difference is in-app purchases: QuantumCurling at none against Odd Color Out's 1. QuantumCurling also leads on update cadence (every 5 days vs every 17 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Odd Color Out sells 1 one-off in-app purchase. QuantumCurling asks for nothing beyond the download.

Odd Color Out ships an update every 17 months, QuantumCurling every 5 days. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Odd Color Out | QuantumCurling |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/odd-color-out-multiplayer/id6448401800/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 17 months | **Every 5 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 40 MB | 9 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KAZUYA KAMIOKA](https://appshunter.io/developer/433419226) | [Dong Woong Kim](https://appshunter.io/developer/1517600442) |

## What reviewers say

### Odd Color Out

[App page](https://appshunter.io/ios/app/odd-color-out-multiplayer/id6448401800)

Test your color recognition skills by finding the subtly different colored square. Compete globally, challenge friends in multiplayer, or test your limits in progressive difficulty modes.

**Highlights:** Color vision testing, Multiplayer mode, Global rankings, Training mode, Battle mode, Challenge mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### QuantumCurling

[App page](https://appshunter.io/ios/app/quantumcurling/id6781641486)

A science puzzle game where players sling particles to build atoms and molecules. Aim and shoot protons and electrons to create elements and synthesize compounds, collecting them in a codex.

**Highlights:** Build atoms and elements, Synthesize molecules, Collectible element/molecule cards, Offline play, Pick-up-and-play controls, Balance atom stability

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

**In-app purchases:** none


## Frequently asked questions

### Is Odd Color Out free?

Odd Color Out is free to download, with in-app purchases available.

### Is QuantumCurling free?

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

### Do Odd Color Out or QuantumCurling have ads?

Both Odd Color Out and QuantumCurling show ads.

### Which is updated more often, Odd Color Out or QuantumCurling?

Odd Color Out ships an update every 17 months, and QuantumCurling every 5 days. Most recently, Odd Color Out was updated on October 24, 2026 and QuantumCurling on October 9, 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.*