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Kakuro Haven: A Clever Mix of Math and Logic

By Heather

Our latest release, Kakuro Haven, is now available on iOS and Android. It is a cozy home for the classic number crossword: a clever mix of math and logic with more than 2,000 puzzles, a new challenge every day, and no ad ever interrupting a solve.

Part Crossword, Part Number Puzzle

In Kakuro, every run of white squares must add up to its clue, and no digit can repeat within that run. Each square belongs to two crossing sums, so one deduction opens the door to the next. It feels familiar if you enjoy Sudoku, but it has a rhythm all its own.

Every grid in Kakuro Haven has exactly one solution and can be finished through logic alone. There is no need to guess, and there is no timer pushing you along.

2,000+ Puzzles, All Included

The main library spans six board sizes, from the gentle 3×3 Mini to the 30×30 Colossal. Everything is included in the free app, with no puzzle packs to unlock and no daily play limit.

A separate daily puzzle arrives every morning. It is the same challenge for everyone on that date, works without an account or internet connection, and gives streak fans a reason to return after the main library is complete.

Help That Keeps You Solving

We wanted every tool to support the satisfying part of Kakuro without taking it away from you. Kakuro Haven includes:

  • Hints that explain the deduction and leave the actual move to you.
  • Combination and remaining-sum helpers for the clue you are working on.
  • Color-coded pencilmarks and automatic candidates that respect digits you have ruled out.
  • Virtually unlimited undo and redo so you can explore a line of reasoning freely.
  • Handwriting with a stylus or a finger, with recognition staying entirely on your device.
  • Flexible display and control options, including light and dark modes, newspaper-style boards, zooming, and adjustable error checking.

A Quiet Place for Clever Sums

Kakuro Haven works fully offline and requires no account or sign-up. Most importantly, no banner, pop-up, or interstitial ever appears while a puzzle is open. Limited ads elsewhere keep every puzzle free, and a single optional purchase removes them permanently. There is no subscription.

Kakuro Haven is available now on the App Store and Google Play.

Visit kakurohaven.com for screenshots, solving guides, feature details, and download links.