Sumi

駅スタンプ帳 · Eki stamp book

Hunt eki stamps across Japan

Almost every station in Japan has its own rubber stamp – a little artwork waiting at the gate. Sumi shows you where they are, nudges you when one is close, and keeps your finds in a beautiful digital stamp book.

Coming soon for iPhone

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A map of stamps

Hundreds of official stamp spots from JR and private railways – plus new finds confirmed by fellow hunters.

Stamp radar

A gentle buzz when you’re near a stamp you haven’t collected yet. Your location stays on your phone.

Your stamp book

City by city or line by line – with the date of every stamp, photos of your imprints and little badges.

Made for travellers

Station names in your language, ready-made phrases read aloud in Japanese, and stamp etiquette tips.

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