A happy stone is a painted stone you leave somewhere to surprise a stranger. Someone walks past, spots something cheerful on a wall and suddenly has a better day. The idea has been around for years; we add one thing: a unique ID, so the stone gets a travel story.
An old idea, all over the world
People paint and leave stones in parks, on beaches and along footpaths all over Europe. Often there is just a greeting or a picture on it, with a note on the back asking the finder to hide it again. Lovely, but after that nobody knows where it went. The maker never hears whether their stone made someone happy.
The ID is the passport
When you register your stone, it gets a code like 7F2K. You write that on the stone, usually on the bottom. Anyone who finds it can use the code to see the whole journey: where it started, who found it and how many kilometres it covered. That turns a single find into a chapter of a bigger story.
Without an ID a found stone is a nice moment. With an ID it is the start of a story that can run for years.
How a journey begins
You paint a stone, take a photo and tap “New stone” in the app. You give it a name and get its ID straight away. Write that on the stone and varnish over it. Then you put it somewhere people walk past and tap “Place stone”. The app takes your location; you give the spot a name and, if you like, a hint such as “between the roots of the big willow”. From that moment your stone is on the map, waiting for a finder.
What the finder does
Anyone who finds a stone with a code types the ID into the map and immediately sees where it came from. With a free account they then tap “Report the find”. You do that on the spot, or you type in the ID if you already have the stone in your hand. Whoever had the stone last, the maker or the previous finder, gets a notification, and the new stop appears on the travel page. After that the finder may keep it, but the best thing is to place it again somewhere else. That way it keeps travelling.
Why people join in
For some it is a reason to get outside: a walk with a purpose, because the map shows which stones are hidden nearby. For others it is the thrill of a notification that your stone has been found, sometimes months later and hundreds of kilometres away. And for kids it is both at once: painting, hiding, searching and then checking the map to see where their stone is now.
Who is it for?
Everyone, but families get the most out of it: kids paint and hide, parents follow the map, and grandparents take stones along on their trips. Create a family together in the app: everyone has their own stones and you can see each other’s journeys. You can make children’s names visible only within the family, and you never share your own home: you choose where a stone ends up.
What does it cost?
Nothing. An account is free and you can register as many stones as you like. All you need is a smooth stone, some acrylic paint and a coat of varnish. Have a look at the map to see what is hidden near you, or get the paints out this afternoon. The first stone is always the most fun.



