Hueku is a calm daily color-nonogram (Picross). Read the number clues, fill the grid, and a little picture appears — one quiet puzzle before bed, with Mochi the sleepy cat dozing nearby.
🌙 coming soon to iOS & Android — the links light up at launch.
still up? one quiet one, then rest.
No timers shouting at you, no streak fires. Just clean logic, soft color, and a calm place to land at the end of the day.
Two full modes. Classic mono Picross, plus richer color-nonograms with the gap rule — every puzzle reveals a hand-made pixel picture.
Your daily habit is counted in nights in a row under a quiet moon. A gentle bedtime nudge, never a guilt-trip.
Every puzzle is verified to be uniquely, logically solvable — no required guessing, ever. Stuck? A soft hint points to one true cell.
Plays with no signal and no account. Your progress, best times and gallery live on your device — nothing to sign up for.
A precision control-pad and hold-to-peek clue overlay make large boards effortless — pinch to zoom, pan, and never lose your place.
Solved pictures get framed by Mochi in your gallery and fill in per-pack murals. Share a favorite with a single tap.
Mochi is a sleepy little cat drawn in the same pixel language as the grid. She breathes, puffs soft z's while she dozes on the home screen, and stretches awake with a content blink the moment you solve. She keeps the lamp on so the late hour feels a little less empty — and frames every picture you finish.
Soft, lamp-lit screens — the nightly daily, color solving, and your framed wall.
a fresh picture each night, kept by Mochi.
tap a swatch, sweep a line, undo freely.
solved pictures fill in per-pack murals.
Nonograms (also called Picross) are simple to learn and quietly addictive.
Clues on each row and column tell you how many cells to fill, and in what runs. The picture hides in the logic.
Tap to fill, long-press to mark a cell you know is empty. Tap-drag to sweep a line. Undo as much as you like.
Complete the grid and the picture lifts off the board with a soft celebration. Mochi frames it on your wall. Goodnight.
Six bundled packs to start — twenty-five hand-authored puzzles, with more on the way.
Classic black & white to learn the ropes.
Leaves, blooms and small green things.
Cats, birds and other tiny friends.
Pixel-perfect nods to the old machines.
The year, one little weather at a time.
Rooftops and windows after dark.
One quiet puzzle before bed. Mochi kept the lamp on.
🌙 coming soon — follow along and we'll add the links the moment they're live.
Yes. Hueku is free to download and play. An optional one-time Remove Ads purchase and small coin packs are available, but you can solve every daily puzzle without spending anything.
No. There's no sign-up and no login. Hueku is offline-first — your progress, best times, streak and gallery are stored on your device.
Hueku is built as a calm, late-night wind-down with a character — Mochi the cat, a moonlit "nights in a row" habit instead of streak fires, and comfort tools that make even large color grids easy on the eyes.
Always. Every puzzle is validated to have a single, logical solution with no required guessing. If you're stuck, a hint points out one correct cell or flags a mistake.
Hueku runs on iPhone, iPad and Android phones & tablets. It's built with Flutter for a smooth, native feel on each.