Calm Kakuro that teaches.

No ads. One-time purchase.

Kakuro is a crossword made of sums. Every puzzle here has exactly one solution you can reach by logic alone, and when you get stuck, the hint names the technique you are missing instead of handing you the digit.

  • App Store iPhone and iPad, coming soon
  • Google Play Android, coming soon

Hint 1 of 3 Magic block

The 16 in 2 run is a magic block: its clue can be made only one way.

  1. Names the technique
  2. Outlines the cells
  3. Explains the step
A Gentle puzzle part way through, with the first step of a hint showing.

Built to make you better at Kakuro

No energy bars, no coins, no pop-ups. Just good puzzles, and help when you ask for it.

Never a guess
Every puzzle has one solution and a recorded path of logical steps to it. Our solver checks each one before it ships.
Hints that teach
A hint first names the technique and points at the run. Ask again and it outlines the cells; once more and it explains the step in two sentences. It fills a digit only if you tap Apply.
Honest difficulty
Each tier, from Gentle to Expert, is a named set of techniques. After every solve you see the key step, so you can check the label yourself.
Every tool, free
Notes, auto-candidates, the combinations helper, hints, undo and check are free for everyone. Auto-candidates never bring back a note you removed.
A forgiving daily
One puzzle a day for everyone, gentle on Monday and building to Expert on Sunday, plus a Mini. Streaks come with two freezes a month and survive time zones.
Web and phone, offline
The same puzzles in your browser, on iPhone and on Android. No account needed; sign in only to keep Pro and your streak across devices.

What you see in the app

After every solve: your time, hints and mistakes, and the key step that set the puzzle's tier.
The combinations helper lists every way to make the selected cell's totals, across and down.
Today's daily and Mini, the same for everyone, with a streak that forgives a missed day.

Free to play. Pro, once.

The full puzzle bank, every Shaped template and the whole daily archive. Every tool and hint stays free. No subscription, no coins, no timed offers. Nothing you buy is ever taken away.

What is free and what Pro adds
Feature Free Pro, one-time purchase
Classic puzzles A free set across sizes and tiers The full bank, every size and tier
Mini puzzles Unlimited Unlimited
Shaped puzzles A starter set of shapes Every shape, plus new seasonal ones
Daily puzzles Today's daily and Mini, and the last 7 days The full archive
Tools and hints All of them All of them
Streaks, stats and sign-in Included Included

New to Kakuro?

The rules fit in a paragraph, and the first puzzles teach the rest. Start with the rules and a worked example, keep the combinations chart open, or go straight to today's puzzle.