Frequently asked

How do I play the binary puzzles?

Fill the grid with two symbols so that no three of the same ever sit next to each other in a row or column, and each row and column ends up with the same number of both. The app has an illustrated guide built in — tap Guide during any game and it explains that variant step by step, with pictures.

My child can't read yet. Can they still play?

Yes. Choose Kids Classic or Kids Binary and pick the pictures or symbols style. The 4×4 grids use crocheted bees, flowers and honey pots instead of numbers, so no reading or counting is needed.

Are there adverts or in-app purchases?

No, and there never will be. You buy the app once. There are no pop-ups, no timers and nothing to unlock.

Does it need an internet connection?

No. The app works entirely offline and contains no networking code at all.

I'm stuck on a puzzle.

Help fills in one correct square — the next logical step — so you can keep going. Show solution opens a pop-up with the whole solved grid and marks the squares you got wrong; Clear mistakes in that pop-up removes just your wrong entries so you can carry on playing.

How do the flowers and honey pots work?

Every square you get right on the first try earns a flower. Ten flowers make one pot of honey. A square you once filled in wrongly won't earn its flower, so a clean solve is worth more.

How do I change the language?

Tap the gear icon on the main screen. Seven languages are available: English, Deutsch, Čeština, Polski, Magyar, Français and Español. Dark mode, text size and the grid background are in the same place.

Will my progress sync between my iPhone and iPad?

Not at the moment — scores are stored on each device separately, because the app has no server and no account. Both devices are covered by the same purchase.

How do I reset my progress?

There is no reset button in the app today. Deleting and reinstalling the app clears everything. If you'd find a proper reset useful, do say so — it's an easy thing to add.

Podpora (česky)

Nefunguje něco, nebo máte nápad na vylepšení? Napište na coufoli.support@gmail.com.

• Binární hlavolamy: vyplňte mřížku dvěma symboly tak, aby vedle sebe nikdy nebyly tři stejné a aby v každém řádku i sloupci bylo od obou stejně. Tlačítko Návod ve hře vše vysvětlí obrázky.
• Dítě ještě neumí číst: zvolte Pro děti a styl s obrázky — mřížky 4×4 používají místo čísel háčkované včelky a květiny.
• Reklamy a nákupy: žádné nejsou a nikdy nebudou.
• Internet: není potřeba, aplikace funguje zcela offline.
• Zaseknutí: Nápověda doplní jedno správné políčko, Ukázat řešení odhalí celé řešení a označí chyby.
• Jazyk, tmavý režim, velikost písma: ozubené kolečko na úvodní obrazovce.