# Gradients RGB: Color IQ Game — Guess the shade from memory > Color perception and accuracy game with memory, gradient, and real-world color matching. (iPhone/iPad app by Oleg Ruban.) - Source: https://appshunter.io/ios/app/gradients-rgb-color-iq-game/id6780284967 (this page in markdown: same URL + `.md`) - Developer: [Oleg Ruban](https://appshunter.io/developer/1612784876) - Category: Games, Education, Puzzle, Strategy - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 3 MB - Languages: American English - Released: 2026-07-06 - Data updated: 2026-09-04 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/gradients-rgb-color-iq-game/id6780284967/reviews.md ## What is Gradients RGB? 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/ ## Key features - Color IQ test and perception profile - Match colors and gradients by eye - Daily challenges with rewards - Play duels with friends via link - Match real-world colors with camera - 8 brain training drills - Shareable results with accuracy metrics ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Gradients Pro | $2.99 | per month | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | 50 Diamonds | $0.99 | one-time | | 150 Diamonds | $1.99 | one-time | | 500 Diamonds | $4.99 | one-time | ## Frequently asked questions about Gradients RGB ### What is Gradients RGB's Color IQ test? The Color IQ test provides a rating from 0 to 1000, comparing your color perception to others. It also maps how your eye interprets red, green, and blue channels individually, indicating any consistent overshooting. ### How does Gradients RGB measure accuracy? Accuracy is measured using CIEDE2000, a professional color-difference formula, shown as a delta E value. A perfect match results in a delta E of zero, indicating the target and your attempt are indistinguishable. ### Can I play Gradients RGB offline? Yes, Gradients RGB works offline, allowing you to play the Color IQ test, Match by Eye, and brain training drills without an internet connection. ### How does the Daily Challenge work in Gradients RGB? The Daily Challenge presents three new colors each day, identical for all players worldwide. You get one attempt per color with no hints, and maintaining a streak can earn you up to 40 diamonds daily. ### Does Gradients RGB have ads? Gradients RGB is ad-free. However, there are optional short promo breaks between training rounds that can be removed by purchasing Gradients Pro. ### What are the subscription options for Gradients RGB? Gradients RGB offers an optional 'Gradients Pro' subscription for $2.99 per month, which removes the short promo breaks between training rounds. You can also purchase diamonds, earned for free or bought, to use for hints. ### What age rating does Gradients RGB have? Gradients RGB has an age rating of 4+, making it suitable for a wide range of players interested in color and perception games. ### How often is Gradients RGB updated? The latest version, 1.0.2, was released on August 22, 2026, indicating recent updates. The app is actively maintained, with new features and improvements likely to follow. ## Version history (last 3 releases) ### 1.0.2 — 2026-08-22 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. ### 1.0.1. — 2026-07-08 Small under-the-hood improvements and polish. Thanks for playing - more coming soon! ### 1.0 — 2026-07-07 No release notes. ## More apps by Oleg Ruban - [Snailbox: Bill Organizer](https://appshunter.io/ios/app/snailbox-bill-organizer/id6785728084) - [Toolfold: PDF & Image Tools](https://appshunter.io/ios/app/toolfold-pdf-and-image-tools/id6791025540) - [PermitGrid](https://appshunter.io/ios/app/permitgrid/id6792404163) All apps by Oleg Ruban: https://appshunter.io/developer/1612784876 ## Related topics [color gradient game](https://appshunter.io/ios/topics/color-gradient-game) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-04.*