CHROMARU

Fill every pane with light.

Chromaru is a calm logic puzzle you solve with color. Light a dark stained-glass window, one pane at a time.

Download on the App Store Get it on Google Play

Coming soon to the App Store and Google Play.

A finished Chromaru window: a five by five grid of glowing colored panes divided into outlined regions.
A finished window glowing in full color, with a new best time A Chromaru puzzle in dark mode A puzzle with the color-blind friendly palette and a symbol on every pane

Three rules. The rest is reasoning.

Light every pane with a color.

Each outlined region uses its colors once. A region of 3 panes uses the first 3.

Matching colors never touch, not even at corners.

Made to be played

  • 4,000 puzzles, six tiers
    From Flicker to Nova, each tier asks for deeper reasoning. Every puzzle has exactly one solution, reachable by logic alone.
  • A fresh daily
    A new puzzle every day, gentle early in the week and toughest on Saturday. Keep your streak alive.
  • Notes in color
    Pencil in the colors a pane might take, undo as far back as you like, and start over any time.
  • Your own records
    Best times for every puzzle, a trophy when you beat one, and a progress page that stays on your device.
  • For every eye
    Optional shapes on every color and a color-blind friendly palette, one tap away. Light and dark mode.
  • Offline and quiet
    No account, no sign-up, and never an ad while you solve. Stuck? Watch a short video and the game fills in one pane for you.

Inside the window

Real screens from the app: a gentle first board, a daily with a streak, 4,000 fair puzzles, light and dark mode, and aids for every eye.

A calm color logic puzzleFill every pane with light. No color twice in a region. Matching colors never touch.
A Chromaru puzzle half lit with glowing colored panes, one empty pane selected
A fresh puzzle every dayKeep your streak glowing, with 4,000 more in the library.
The Chromaru home screen with today's solved daily, a 12 day streak, and six puzzle tiers
Learn by tappingA tiny first board teaches the rules move by move.
The tiny first board that teaches the rules, with the pane and color to tap glowing
4,000 puzzles, every one fairOne solution each, reached by logic. No guessing, ever.
A list of Spark puzzles, most solved with best times, one in progress
Beat your own bestBest times for every puzzle, kept on your device.
A finished window glowing in full color, with a new best time
Calm by day, glowing at nightLight and dark mode. The window always glows.
A Chromaru puzzle in dark mode
Made for every eyeOptional shapes and a color-blind friendly palette, one tap away.
A puzzle with the color-blind friendly palette and a symbol on every pane
Gentle start, real challengeSix tiers, Flicker to Nova. Each step asks a little more.
The six tiers from Flicker to Nova in dark mode
Think it through in colorPencil in color notes. Undo as far back as you like.
A puzzle in Notes mode with colored notes pencilled into an empty pane
Your progress, your paceStreaks and best times on your device. No account, no sign-up.
The progress page with puzzles solved, streaks, and best and average times by tier

Questions, answered

What is Chromaru?

Chromaru is a calm logic puzzle you solve with color, for iPhone, iPad, and Android. You light a dark stained-glass window one pane at a time: each outlined region uses its colors once, and matching colors never touch, not even at a corner.

Do I need to know the rules before I start?

No. Your first window is a tiny 3x3 board that teaches the rules move by move. The palette only offers the colors that fit the region you selected, so you learn by tapping, not by reading a manual.

Is Chromaru free?

Yes. All 4,000 puzzles and the daily are free to play. Ads support the game: a banner on the home screen and puzzle lists, an occasional ad after a finished puzzle, and an optional short video when you ask for a hint. No ad ever appears while you solve.

Can I play offline?

Yes. Every puzzle, the daily, and your progress live on your device, so Chromaru plays without a connection. Only ads and hint videos need one.

How hard does it get?

Six tiers, Flicker, Spark, Glow, Flare, Blaze, and Nova, grow by the reasoning each puzzle asks for, not just by size. Boards run from a 3x3 teaching board up to 8x8.

Does every puzzle have a fair solution?

Yes. Every puzzle has exactly one solution, reachable by logic alone, and each one is checked before it ships. You never have to guess.

What if I get stuck?

Pencil in color notes, undo as far back as you like, or start over. Assisted feedback warns you when a color touches its match, and Classic stays quiet until you find the contradiction yourself. For a hint, watch a short video and the game fills in one pane, fixing a wrong pane first.

Is Chromaru color-blind friendly?

Yes. Turn on a symbol for every color and a color-blind friendly palette in Settings or from the pause menu. Both are off by default and one tap away.

Do I need an account?

No. There is no account and no sign-up. Your progress, streaks, and best times stay on your device. The privacy policy explains the ads, analytics, and crash reports, and you can turn usage data off in Settings.

Which devices does Chromaru run on?

iPhone, iPad, Android phones, and Android tablets.

Light your first window.

Chromaru is free on iPhone, iPad, and Android. 4,000 puzzles, a fresh daily, and it plays offline.

Download on the App Store Get it on Google Play

Coming soon to the App Store and Google Play.