Last updated: 1 August 2026
Just Kakuro does not collect any personal data. There is no account to create, nothing to log in to, and no analytics or advertising code in the app.
Your settings, puzzle progress, best times, solve counts and technique mastery are saved on your device using the system's standard preferences storage. That data never leaves your device. Deleting the app deletes all of it.
Just Kakuro offers one optional in-app purchase that unlocks the rest of the lessons, the practice drills, the teaching hints, large boards and stats. The purchase is handled entirely by Apple. The app asks Apple whether the purchase has been made and stores only that yes-or-no answer on your device. Payment details are never seen by the app or by the developer. Apple's handling of the transaction is covered by Apple's Privacy Policy.
Apart from the App Store purchase check described above, the app does not connect to the internet. Puzzles are generated on your device and everything works offline.
The app collects no data from anyone, including children.
If this policy changes, the revised version will be posted on this page with a new date at the top.
Questions about this policy can go to kai.kunze@gmail.com.