Trichrome
Puzzle
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
A new puzzle every day — the same one for everyone, play against your friends and see who comes out on top.
Place mirrors to bend red, green and blue light across the grid. Simple to grasp in ten
seconds, and it deepens as you go.
THE TWIST IS COLOUR
Light adds up. A yellow target needs a red beam AND a green beam arriving together. A
white one needs all three. Send a stray beam into the wrong target and you will overshoot
it — so every mirror you place has to earn its spot.
EVERY TARGET TELLS YOU WHAT IT WANTS
A target carries a dot for each colour it needs, and each one fills in as that beam
arrives. A half-solved target doesn't just sit there dark — it shows you exactly which
beam is still missing. Tap any target to see its recipe up close. No guesswork.
COMBINERS CARRY COLOUR
Later boards add a node that merges two beams and fires the mix out the other side, so a
colour can be built in one place and spent somewhere else entirely. Sunday's puzzle is the
only one that gives you two of them.
A PUZZLE A DAY
One board a day, the same board for everyone, resetting at midnight. Difficulty ramps
across the week the way a crossword page does: Monday is a gentle start, Sunday is for
the stubborn. Build a streak. Share how efficiently you solved without spoiling it for
anyone who hasn't played yet.
ENDLESS PRACTICE
Four difficulty ladders — Gentle, Steady, Tricky and Fiendish — with an unlimited supply
of boards behind each. Every one is generated fresh and guaranteed solvable.
NOTHING TO READ ON THE BOARD
No vocabulary, no wordplay, no reading. The puzzle itself is pure light and geometry —
shown, never written.
BUILT TO BE PLAYABLE BY EVERYONE
- Colourblind assist labels every emitter and target
- Targets are readable by dot count, not colour alone
- Full VoiceOver support on every cell
- Reduce Motion and reduced-glow options
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The developer, Ross Helenius, 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 Collected
The developer does not collect any data from this app.
Accessibility
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Information
- Seller
- Ross Helenius
- Size
- 1.7 MB
- Category
- Puzzle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 3 more
- English, French, German, Spanish
- Age Rating
4+
- 4+
- Copyright
- © 2026 Ross Helenius