Gradients RGB: Color IQ Game
Guess the shade from memory
Free · In‑App Purchases
New: the 60-second Color IQ test tells you how your eye really reads color. Plus duels you send by link, and colors pulled straight out of your own photos.
What's your Color IQ?
Five colors, about a minute, one number. Most people are far worse at this than they expect, and finding out is the fun part.
Free to play. No account required. Works offline.
THE COLOR IQ TEST
A rating from 0 to 1000, where you land against everyone else, and a map of how your own eye reads red, green and blue. It will tell you which channel you consistently overshoot. Retake it whenever you want; ordinary play keeps the rating moving in between.
MATCH BY EYE
A color appears. You rebuild it by eye, using either HSB dials (hue, saturation, brightness) or raw RGB channels, whichever your eye thinks in. Solid colors on Easy, flowing three-stop gradients on Medium, five-stop radial gradients on Hard. Score out of 1000 with a full per-channel breakdown and the exact hex you landed on.
DAILY CHALLENGE
Three fresh colors every day, the same for everyone on Earth. One attempt, no hints. Keep your streak alive for growing diamond rewards, up to 40 a day.
DUELS BY LINK
Play a set of colors, then send the link. Your friend gets the exact same colors, whether or not they already have the app. No accounts, no matchmaking, and nobody has to be online at the same time. They play, they see both scores, they send one back.
MATCH THE WORLD
Point the camera at a sunset, a wall, someone's jacket. The app measures the real color inside the frame and you rebuild it by eye. Infinite levels, made by the world.
BRAIN TRAINING, 8 DRILLS
Memory, mental color mixing, and split-second discrimination:
- Memory: see it for 4 seconds, rebuild it blind
- Blitz: 20 rapid-fire "which is redder?" calls
- Survival: one miss ends the run, colors get harder every round
- Color IQ: the adaptive acuity rating, on its own
- Negative: set the exact opposite of the shown color
- Mix: blend two colors in your head
- Midpoint: fill the missing gradient stop
- 2-Back: recall the color from two steps ago
PERCEPTION PROFILE
The app quietly learns how your eye reads each channel, where you run warm and where you run cool, and tells you exactly what to train next. No other color app personalizes like this.
REAL COLOR SCIENCE
Accuracy is measured with CIEDE2000, the same color-difference formula used in professional calibration, and shown as a plain delta E next to every score. A perfect match really is perfect: targets sit on exactly the steps the sliders move in.
SHARE ANY RESULT
Every result makes a card worth sending: your number, the target, your attempt, and how far apart they actually were.
Gradients Pro is optional. It removes the short promo breaks between training rounds and can be bought once or monthly, your choice. Diamonds, earned free or purchased, pay for hints.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
The app now opens with a question instead of a menu.
COLOR IQ TEST
Five colors, about a minute, one number. You get a rating from 0 to 1000, where you land against everyone else, and a map of how your own eye reads red, green and blue — including which channel you consistently overshoot. Retake it any time; ordinary play keeps the rating moving in between.
DUELS BY LINK
Play a set of colors, then send the link. Your friend gets the exact same colors, whether or not they already have the app. No accounts, no matchmaking, and nobody has to be online at the same time.
MATCH THE WORLD
Point the camera at a sunset, a wall, someone's jacket. The app measures the real color inside the frame and you rebuild it by eye. Infinite levels, made by the world.
SHARE ANY RESULT
Every result screen now makes a card you can actually send someone — your score, the target, your attempt, and how far apart they really were.
HUE, SATURATION, BRIGHTNESS
The sliders switch between RGB channels and HSB dials, and every track now previews what moving it will do. Pick whichever your eye thinks in.
REAL COLOR SCIENCE
Accuracy is now measured with CIEDE2000, the same color-difference formula used in professional calibration, and shown as a ΔE alongside every score.
MORE VARIED COLORS
Targets used to cluster in the same band of medium mud because each channel was drawn independently. They are now spread deliberately across vivid, pastel, deep, muted, bright and dark families.
FIXES
- The color you submit is now exactly the color that gets scored. A rounding error could shift a channel by one step on its way to the server, which is why a perfect match sometimes came back imperfect.
- Targets always sit on the same steps the sliders move in, so a perfect 1000 is genuinely reachable.
PRO, ONE PAYMENT
Pro is now available as a single purchase instead of only a subscription.
The developer, Oleg Ruban, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Oleg Ruban
- Size
- 2.7 MB
- Category
- Puzzle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Infrequent
Contests
Contains
Advertising
- In-App Purchases
Yes
- 500 Diamonds $4.99
- 150 Diamonds $1.99
- 50 Diamonds $0.99
- Gradients Pro $2.99
- Copyright
- © 2026 Oleg Ruban

