Crossia — Japanese crosswords online

Japanese crosswords from 10×10 to 25×25 — the picture emerges from the numbers

Coming soon to the App Store & Google Play

What Crossia is

Crossia is an app for Japanese crosswords. The numbers along the rows and columns say how many cells are filled in a run; you work out the rest by logic, and a picture emerges from the grid.
Related guides: Create together online.

What makes it special

Solve nonograms (Japanese crosswords) on a numbered grid.
The shared picture of the day has “Invite everyone”; private rooms open by invitation link, and a room supports up to 10 people.
There is a picture of the day with daily records and a visit streak.
After the first online start, the app keeps its shell, catalogue and saved work offline; shared rooms and syncing still need internet.

What you can do

Numbers, not a picture
The numbers along the edges are the only hint. Everything else follows from reasoning.
No guessing
Only puzzles that logic can finish make it into the catalogue. You will never have to guess halfway through.
From 10×10 to 25×25
The same subject on a different grid is a different puzzle, with its own clues and its own progress.
Runs in the browser
Nothing to install — just open it and start solving.