Last updated: 28 August 2026

1. How the app works

Fumi-log uses GPS to record the places you have walked and paints them onto a map as cells. Location data is collected in the background, even when the app is closed, because painting cells on the map is the app's core feature. You can stop recording at any time from Settings.

2. What we collect and how long we keep it

The app handles the following data. Unless you agree to a tourism study in section 3, all of it stays on your device only. • Location (latitude and longitude) • Treasures you have found • App settings • Your subscription status (Fumi-log Premium)

This data stays on your device until you delete it. Uninstalling the app, or using "Delete local data" in Settings, erases it completely.

All payment processing (card details and so on) is handled by the App Store. The app never receives your card details.

3. Taking part in a tourism study (optional)

Fumi-log runs two tourism studies. Both are optional, and we only collect from people who agree. If you don't agree, this section does not apply to you.

[1. The inbound study] We ask visitors from overseas when they first start the app. We collect only what is recorded inside Japan, during the stay period you tell us.

[2. Local tourism studies] You join these by scanning a QR code handed out in a tourist area. Where you live does not matter. We collect only what is recorded inside Japan, from the moment you agree until you tap 'End survey'. If you forget, it ends on its own after 7 days. Nothing before you agree, and nothing after it ends.

[What we collect]

• The streets you walk (latitude, longitude, time, GPS accuracy) and the cells filled in on your map
• The date and time you agreed, and the version of the wording you agreed to
• App version, device model, OS version, language setting, time zone
• Inbound study only: your country or region of residence, purpose of visit (leisure / business), the stay period you tell us, and your answers about luggage (outbound and return)
• Local studies only: the name of the study you joined, and your answers to the questions asked at the end

[What we never collect]

• Your name, email address, phone number, or anything else that identifies you
• Anything recorded before or after the period you agreed to