Support
One address, answered by the person who builds the app.
Write in English or in French. We aim to answer within two working days, and to fix a missing card within 48 hours.
A card was not recognised
Tap Report a missing card on the scan result screen. It opens a pre-filled email containing the card name and number the app read, which is exactly what we need to add it to the catalogue. That is the fastest route — faster than describing it to us.
Before reporting, it is worth retrying with the card flat, in even light, filling the frame, and with no glare across the set number in the bottom corner.
A price looks wrong
Zukan shows a range, its source, and when it was last updated. If a source is off, tell us which card and what you expected — include a screenshot if you can. We would rather correct a source than defend a number.
I subscribed and Pro is not active
Open Settings → Restore purchases. That re-reads your entitlement from the App Store or Google Play and is the fix in almost every case, including after a reinstall or on a new phone signed into the same store account.
If it still says Free, write to us with the store you bought from and the date — not your card details, which we never need and never want.
How do I cancel?
Subscriptions are managed by the store, not by us. Settings → Manage subscription takes you straight there — two taps. Cancel at least 24 hours before the period ends to avoid the next renewal. Deleting the app does not cancel a subscription.
Refunds go through Apple or Google Play; we have no power to issue them ourselves.
I changed phone / I lost my collection
Your collection lives on your device. Zukan writes local backups automatically, and Settings → Data → Restore backup brings back the most recent one. You can also export at any time with Settings → Data → Export collection (CSV) — free, forever, no subscription needed. Export before you wipe a phone.
I want my data deleted
Settings → Data → Erase all data removes everything from the device immediately. For anything held server-side, write to us from the device concerned and read the privacy policy, which explains what exists and what does not.