CHROMARU

Fill every pane with light.

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

Download on the App Store Get it on 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 record 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 fair puzzles
    Every puzzle has exactly one solution, reachable by logic alone. No guessing, ever. Six tiers, from Flicker to Nova, ask for deeper reasoning as you go.
  • A fresh daily
    A new puzzle every day, easier 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
    Your fastest time on every puzzle, a trophy when you beat it, and a progress page that stays on your device.
  • Color-blind friendly
    Optional shapes on every color and an alternate palette for color vision differences, one tap away. Light and dark mode.
  • No pressure, fully offline
    No lives to lose, no time limit, no account, and never an ad while you solve. A puzzle on a break or a dozen on a quiet evening, right where you left off.

Any way you hold it

Play in portrait or landscape, on your phone or tablet. Turn your phone on its side and the window takes the left, with the palette and controls beside it.

A phone turned on its side: a half-lit Chromaru puzzle on the left, the color palette and the Color and Notes switch on the right

Inside the window

Real screens from the app: a first board that teaches as you tap, a daily with a streak, 4,000 fair puzzles, light and dark mode, and color-blind friendly options.

A relaxing 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, no lives, no time limit.
A list of Spark puzzles, most solved with their times, one in progress
Beat your own recordYour fastest time on every puzzle, kept on your device.
A finished window glowing in full color, with a record time
Calm by day, glowing at nightLight and dark mode. The window always glows.
A Chromaru puzzle in dark mode
Color-blind friendlyOptional shapes on every color and an alternate palette, one tap away.
A puzzle with the color-blind friendly palette and a symbol on every pane
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 records on your device. No account, no sign-up.
The progress page with puzzles solved, streaks, and fastest and average times by tier

Peek behind the glass

What is Chromaru?

Chromaru is a relaxing logic puzzle you solve with color, a calm brain break for phones and tablets. 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.

Is there a time limit, or lives to lose?

No. Nothing ends a puzzle early: there are no lives, no hearts, and no time limit. A clock keeps your time for your own records, and you can pause or leave and come back whenever you like.

Can I play in landscape?

Yes. Chromaru plays in portrait or landscape on phones and tablets. Turn your device and the board, palette, and controls rearrange to fit.

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 records stay on your device.

Which devices does Chromaru run on?

iOS and Android phones and tablets.

Light your first window.

A calm brain break, free on phones and tablets for iOS and Android. 4,000 puzzles, a fresh daily, and it plays offline.

Download on the App Store Get it on Google Play