Privacy

Last updated 7 November 2026

What is saved on this device

To show progress and remember choices, the page saves a little information in your browser's storage on this device only:

• Finished sets: the date, the kind of puzzle, the level and the score. Stickers, the progress table and the "Strongest · Practise more" summary are all worked out from this.
• Choices: the colour picked, light or dark mode (only if it's been changed from the device's own setting), and the last puzzle type and level, so they're ready next time.
• Which animal is playing: if more than one child uses the device, each picks an animal (Puffin, Seal, Fox, Owl, Hedgehog or Otter) and gets their own scores, stickers and choices. Animals are used instead of names, so no names are ever stored.

This never leaves the device. It isn't sent to us or to anyone else, and it doesn't include names or anything that identifies a child. Each device, and each browser, keeps its own copy.

How to delete it

• Use Clear history at the bottom of the puzzle page to delete the scores and stickers of the animal that's playing.
• Or clear this site's data in your browser's settings, which removes everything, including the colour, light or dark and level choices.

Saving a copy of progress

Save a copy on the puzzle page makes a small file of the scores and choices on this device, which you can keep wherever you like and load back later, for example on a new tablet. The file is made on the device itself and is never sent anywhere by Puzzle Puffin.

Working offline

After your first visit, the browser keeps a copy of the page, its fonts and its pictures, so it works without the internet. This copy holds no personal information.

Hosting

The site is hosted by GitHub Pages. Like any web host, GitHub receives the internet address and browser details of each visit, to deliver the page and keep the service secure. We don't see or use this information. GitHub explains how it handles it in its privacy statement.

Everything else, including the fonts, comes from this site itself. No other companies are involved.

Made with children in mind

• No sign-up, no chat, and no way to contact other people.
• No adverts, no in-app purchases and no prompts to install anything.
• Stickers each have a clear goal. Nothing is random, and nothing can be lost by missing a day.

Links to other sites

The note at the bottom of the puzzle page links to claude.ai, the AI assistant used to build Puzzle Puffin. That site has its own privacy policy.

Questions

Puzzle Puffin was made by a parent. If you have a question, or spot a puzzle that looks wrong, please open an issue at github.com/crawfordcarl/logic-puzzles/issues. This needs a free GitHub account.