A quieter kind of puzzle

Sudoku without ads

Flora & Fauna is a free sudoku app for iPhone with no adverts. Not fewer adverts, not adverts you can pay to remove. None.

What an advert costs a puzzle

Sudoku is a quiet game. You settle in, hold three possibilities in your head, and follow a thread of logic to its end. An advert cuts that thread every time: a video after every board, a banner flickering under the grid, a countdown you must sit through to earn a hint. Most free sudoku apps work this way because the adverts, not the puzzles, are what pay for them.

How Flora & Fauna stays quiet

We built the game we wanted to sit inside: aged paper, ink rules, and a watercolour specimen hiding behind every box. Nothing on the page competes with the puzzle. When you finish a box, the reward is not an advert break; it is a kingfisher, painted the way a nineteenth-century field artist would have painted it, joining your collection.

There are no accounts to create, and nothing about you is tracked or sold. A new daily puzzle arrives each morning, and your streak forgives a missed day.

Try it before you download

There is a free daily sudoku on this site, in the same aged-paper style, with no adverts on the page either. If it feels right in the browser, it feels better in the app.

Common questions

Is Flora & Fauna really free with no ads?
Yes. Flora & Fauna is free to download on the App Store and contains no adverts of any kind: no banners, no interstitials, no video ads between puzzles.
Why do most free sudoku apps have so many ads?
Most free sudoku apps earn their money from advertising, so the game is built to show you as many adverts as possible: one after every puzzle, one for every hint, and banners besides. The puzzle is the bait; the advert is the product.
Does Flora & Fauna sell my data instead?
No. There are no accounts, no tracking, and no analytics profile of you. Your collection lives on your device and is yours alone.