Kakuro Haven: Daily Cross Sums

2000 puzzles + bonus daily

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

All 2,000+ puzzles are free, every one has exactly one solution, and no ad ever appears while you are solving. Plus a bonus puzzle lands every morning. Kakuro is the number crossword: fill every run of white squares so it adds up to its clue, and never repeat a digit inside a run. Pure logic. No guessing, basic arithmetic, and no timer breathing down your neck. 2,000+ PUZZLES, ALL FREE Six board sizes, from a gentle 3x3 Mini to the 30x30 Colossal. Nothing is locked, there are no packs to buy, and there is no limit on how many you can solve in a day. A NEW PUZZLE EVERY MORNING The daily is the same puzzle for everyone on the same date, with no account and no connection required. Keep a streak going. The dailies are their own puzzles and appear in no other tier, so finishing the whole library still leaves one waiting tomorrow. WRITE ANSWERS IN YOUR OWN HAND, ON iPad Write digits straight into the cells with Apple Pencil or a finger. It is the closest thing to pen and paper. The app learns your handwriting. Everything stays on your iPad: nothing is uploaded, nothing is downloaded, and recognition needs no connection at all. EXACTLY ONE SOLUTION, REACHABLE BY LOGIC ALONE Every grid is checked before it ships: one solution, no guessing, no dead ends, and no point where the only way forward is to try something and see. Grids run from 3x3 up to 30x30, so a puzzle for the bus and a puzzle for the evening are both here. NO ADS WHILE YOU SOLVE. EVER. While a puzzle is open the screen belongs to the puzzle. Not a banner, not an interstitial, not a "watch this to continue". Ads keep the puzzles free and appear only between puzzles and on the menus. TOOLS THAT TEACH, NOT TOOLS THAT SOLVE - Pencilmarks in five colors, for following more than one line of reasoning on the same grid at once - A dedicated notes mode, so inking an answer never wipes out your pencilmarks - Auto-fill candidates, which never puts back a digit you ruled out yourself - A combination row showing every way the current clue can be made - Hints that explain the deduction and then leave the move to you - Virtually unlimited undo and redo MADE TO BE COMFORTABLE - Works fully offline, free. No account, no sign-up, no connection needed - Pinch to zoom, double-tap to zoom in and back, and one tap to snap the board back - Auto-advance to the next empty cell in the run, if you want it - Light and dark modes - A newspaper board style, set in newsprint and ink - Larger numbers, adjustable error checking, and a choice of tap order - Built for iPhone and iPad, with a layout made for each - In 16 languages: English (US and UK), Spanish (Spain and Mexico), French (France and Canada), German, Italian, Dutch, Portuguese, Turkish, Hindi, Japanese, Korean, and Chinese (Simplified and Traditional) - Your best time for every puzzle, kept on your device ONE PURCHASE, IF YOU CHOOSE. NEVER A SUBSCRIPTION. The free app is the whole game. If you would rather see no ads at all, a single optional purchase removes them permanently. No subscription, no recurring anything. Kakuro is also known as cross sums, kakkuro, or the Japanese number crossword. If you like sudoku, killer sudoku, nonograms, or the puzzle page of a newspaper, this is the one you have been missing.

Ratings & Reviews

  • 5.0
    out of 5
    2 Ratings

Handwriting on iPad is easier to pick up: the board now shows a gentle tip the first time a writing gesture would help, whether that is writing a digit, scribbling to erase, or penciling in a note. New in Settings: a guide to the writing gestures, so you can review them anytime. A friendlier welcome to handwriting: play right away, or teach the app your hand first. Small fixes and improvements.

Version 1.0.4

The developer, Lobster Claw Software LLC, 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 Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Lobster Claw Software LLC
Size
  • 45.1 MB
Category
  • Puzzle
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 12 more
  • English, Dutch, French, German, Hindi, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese, Turkish
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Lobster Claw Software LLC
  • Developer Website
  • Privacy Policy

    • More by Lobster Claw Software LLC