A walking app

Your city, one street at a time.

Every street you walk or cycle fills in on your map. Each new place gets a stamp, and you see what is still out there.

How it works

Go out. Come back with a bigger map.

01 / 03
Walk or cycle
Tap Start and go. The app records your way, also with no signal. Cars and trains do not count.
02 / 03
Your map fills in
Every street you pass turns blue, and stays blue. See how much of your neighborhood, your ward and your whole city is yours.
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See what is still out there
Every neighborhood shows how much of it is yours, the closest to done first. Your stamp books list the places still to find. There is always one more street.

Stamps

Reach a new neighborhood, station, shrine or park, and it gets an ink stamp with the date. Like a station stamp book, for the whole city.

Every stamp is something you really did outside. No streaks, no energy bars, no loot boxes.

Stamp book2026

Your data

Your walks and your World are yours, not ours. We keep them safe for you. You can take them, delete them, and decide who sees them.

Take it with you
Export every walk and your whole map, any time.
Delete it, for real
One walk, your history or your whole account.
Never sold
We never sell your data, and never use it for ads.
You decide who sees it
Only you, or your friends too. A public page comes later, and stays off until you turn it on.
Hide your home
Set a home area, and the streets around it stay off everything you share.
Not in our logs
Your positions never go into logs, crash reports or analytics.

When can I get it?
On iPhone, free from the App Store, in Japan, Taiwan, Korea and Hong Kong. Android comes later: join the waitlist and we write once, on the day.
Where does the map work?
Tokyo has the full map, with stations, shrines, parks and stamp books. In Taiwan, Korea and Hong Kong, streets and neighborhoods count now, and more places come later. The rest of Japan is next. Walks anywhere else are saved, and count when we add your region.
Does the app follow me all the time?
No. It records your way only from Start to Stop. When you open a map, it checks where you are for a moment to show the area around you, and we don't keep that. If you forget to stop, it asks whether you are still out, and stops by itself after a while.
Is it a fitness tracker?
No. No calories, no pace goals. It is your own map of the real world, saved like a game save. The reward is: my world got bigger today.

Free on iPhone. Android comes later.