Odd Color Out vs QuantumCurling
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Odd Color Out
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.
- Color vision testing
- Multiplayer mode
- Global rankings
- Training mode
- Battle mode
- Challenge mode
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How well can you distinguish between colors? Perhaps you have a special ability. The ability to recognize colors varies from person to person, and very few people can accurately distinguish subtle differences in colors. Only individuals with exceptional color vision can do so. You may be one of them. Would you like to test your skills and find out? I have created a game that allows you to test your color recognition skills and see how well you perform. You can also check your score on the global rankings and play with family and friends with the multiplayer feature. Maybe someone with special abilities is close you. Why not try playing together? This game blends elements of both "color vision tests" or "color blind tests" as well as "odd one out" games. - How to play Find the one square that is slightly different in color from the others and touch it. The game has three play modes. - Training Mode Select the difficulty level you want to play and press the start button. When the game starts, touch the square that has a different color from the others. There are a total of 10 questions. You can participate in the global ranking based on how quickly you answered all the questions correctly. If you make a mistake, penalty seconds will be added to your elapsed time, so choose your answer carefully. - Battle Mode Two players can play on one device. Player 1 plays in the bottom half of the screen and Player 2 plays in the top half of the screen. Please select the difficulty level you want to play and press the start button. If you want to play without any handicap, please select the same difficulty level as your opponent. When the game starts, touch the square that has a different color before your opponent. If you make a mistake, your opponent will win, so be careful. The first player to win 5 games wins the match. - Challenge Mode Select the starting difficulty level and press the start button. (Certain conditions must be met to select the starting difficulty level.) When the game starts, touch the square that has a different color from the others. The questions will become progressively more difficult. If you make 3 mistakes and your life becomes 0, the game is over. You can participate in the global ranking based on your score. For those studying color, such as color testers or coordinators, or those interested in color or with confidence in their color vision ability, please try to aim for the top spot on the global rankings.
QuantumCurling
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.
- Build atoms and elements
- Synthesize molecules
- Collectible element/molecule cards
- Offline play
- Pick-up-and-play controls
- Balance atom stability
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How is an atom built? Forge one yourself. Quantum Curling is a science puzzle where you sling particles like curling stones to complete the elements. Settle protons into the nucleus and place electrons onto the K, L and M shells to build all 18 elements of the periodic table, one by one, from Hydrogen (H) to Argon (Ar). ■ Pick-up-and-play controls · Pull to aim, release to shoot. ■ Balance the charge, keep it stable · Mismatch the protons and electrons (an ion!) and the atom grows unstable. · The subtle, razor's-edge tension of balancing each atom into stability. ■ Combine elements into molecules — the Synth Lab · Toss your finished elements into the reaction zone to synthesize 51 molecules. · From Water (H₂O), Carbon Dioxide (CO₂), Ammonia (NH₃) and Salt (NaCl) to methane and ethanol. ■ Element Codex & Molecule Codex · Every element and molecule you make is recorded as a collectible card. ■ More · Playable offline.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Odd Color Out | QuantumCurling |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 5 — better | — |
| Update frequency | Every 17 months | Every 5 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 40 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | KAZUYA KAMIOKA | Dong Woong Kim |
Customer experience
Odd Color Out
QuantumCurling
In-app purchases
Odd Color Out
- Remove Ads$3.99
QuantumCurling
No in-app purchases
Questions
Is Odd Color Out free?
Is QuantumCurling free?
Do Odd Color Out or QuantumCurling have ads?
Which is updated more often, Odd Color Out or QuantumCurling?
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